Aggressive Conditions Research Articles

STRATEGIC PRINCIPLES OF CULTURAL POLICY OF UKRAINE IN THE CONTEXT OF THE COURSE OF EUROPEAN INTEGRATION

The purpose of the research deals with proving the need for the formation of strategic foundations of cultural policy in Ukraine for the conditions of military aggression and the post-war period, taking into account the requirements of the state course of European integration. The current state of the cultural sphere in Ukrainian society is demonstrated to be characterised by at least the following factors: the destruction of a large number of infrastructure facilities of cultural institutions due to military operations, a significant reduction in the financing of culture from state and local budgets and the requirement to learn European practices in the implementation of cultural policy as a result of Ukraine's acquisition of the status of an EU member. Given these circumstances, the political class and the administrative establishment of Ukraine are faced with the task of creating a renewed cultural policy that would be able to overcome the losses and traumas of the war period, ensure cultural development in the post-war period, aimed at forming a stable identity of Ukrainians. Hence, the task arises through the means of culture of forming the European component of Ukrainian identity, since the condition for the success of the course of European integration is the need to master the values on which the European community is built. It is established that an updated strategy plan for cultural development is required to address these issues. The necessity of modernization of the legislative base of cultural policy is shown, in particular, the approval of decentralization of the functioning of government bodies, strengthening support for culture from the state and municipal budgets, creating a legislative base for public-private partnership in the cultural sphere, strengthening the information component of the cultural process.

PROBLEMS AND CONTRADICTIONS OF THE FORMATION AND IMPLEMENTATION OF STATE POLICY IN THE SPHERE OF ENSURING THE ECONOMIC SECURITY OF UKRAINE IN THE CONDITIONS OF EXISTING CHALLENGES AND THREATS

The article examines the results of expert-analytical monitoring of levels and threats to economic security and its components in the conditions of Russian military aggression. The peculiarities of the formation and implementation of state policy in the sphere of ensuring the economic security of Ukraine in modern conditions are determined. The problems and contradictions of the formation and implementation of state policy in the sphere of ensuring the economic security of Ukraine in the conditions of martial law are characterized. Directions for the formation and implementation of state policy in the sphere of ensuring the economic security of Ukraine in modern conditions are proposed.

Cooperation of Ukraine with international organizations in the conditions of russian aggression: problems, directions, tasks

Cooperation of Ukraine with international organizations in the conditions of russian aggression: problems, directions, tasks

ЕВРИСТИЧНИМЙ ПОТЕНЦІАЛ ГРОМАДЯНСЬКОГО СУСПІЛЬСТВА В РЕАЛІЗАЦІЇ СТРАТЕГІЇ ЄВРОПЕЙСЬКОЇ ІНТЕГРАЦІЇ УКРАЇНИ: КОНЦЕПТУАЛЬНІ ВИМІРИ

The radical transformations that modern Ukrainian society is experiencing in the conditions of full-scale aggression of the Russian Federation against Ukraine and its acquisition of the status of a candidate for the EU require a proper, in-depth and comprehensive analysis of Ukraine’s humanitarian development strategies, the implementation of the European integration vector of its development. The humanitarian strategies of Ukraine’s development in the context of full membership in the European Union are studied. It is shown that they should be determined by the national interests of the entire society, ensuring the rights and freedoms of citizens, and updating the system of fundamental values of the Ukrainian people. Paradigmatic European values include Ukrainian civilizational identity (spirituality), state sovereignty and territorial integrity of Ukraine, high level of human development, democratic society, full standards of living, gender equality, etc. The focus of the research is: artifacts of totalitarian society and their overcoming; European experience and the Ukrainian way in forming a system of values; civil society and state institutions; synergy of interaction in the European integration context; formation of collective memory and rethinking of Ukraine’s past in a European perspective. Special attention is paid to the dynamics of the processes of democratization and decommunization, cultural and linguistic policy, interethnic and interreligious relations, etc.

ПЕРСПЕКТИВИ РОЗВИТКУ ТА ПРОБЛЕМИ ВІДНОВЛЕННЯ ЛЮДСЬКОГО КАПІТАЛУ В УМОВАХ ВОЄННОГО ЧАСУ

The article examines the perspective of development and the problems of restoring human capital in the conditions of full-scale military aggression of the Russian Federation against Ukraine. Quantitative and qualitative indicators of the development of human capital during the pre-war period are analyzed; attention is focused on the losses and gains of human capital in the conditions of martial law. The main direct losses of Ukraine’s human capital are singled out, including: mass emigration of citizens abroad and internal migration, irreparable losses among the civilian population, forced deportation, and the death of military personnel. Indirect losses are indicated, among which the impossibility of fully using intellectual and creative potential, the destruction of educational infrastructure, the imposition of a foreign language and cultural values, the temporary suspension of the educational process, as a result, the deterioration of the quality of educational services. The main strategic measures for the development and restoration of the human capital of Ukraine in wartime and postwar conditions are proposed. The main strategic measures for the restoration of human capital include the reconstruction of destroyed housing and critical infrastructure, which must take place on a fundamentally new basis. Such reconstruction should focus not on installing broken windows, but on building so-called "smart" cities. The next measure should be the creation of programs for starting and stimulating the development of entrepreneurial activity and self-employment of the population, which is the main prerequisite for creating an environment in the country to which it is worth returning. An important addition to the measures mentioned above is the development and implementation of state programs for psychological support of families separated because of the war. This situation causes a breakdown in family relations, which can be exacerbated by increasing economic instability. It is precisely because of these circumstances that it is expedient for the state to create and implement social programs aimed at the psychological rehabilitation of family reunification.

Corrosion effects on strands of PT bridges

In recent years, partial failures and collapses involving existing Post – Tensioned (PT) bridges highlighted the need for their structural assessment. Most of existing bridges are approaching the end of their nominal life and constitutive materials have undergone, over the decades, relevant degradation phenomena with dangerous consequences at both local and global level. A good knowledge of material properties, structural details and of the actual maintenance condition of the bridge is then required, especially if we consider that hidden defects – i.e. defects that are not visible without specific investigations – can be responsible of the activation of unexpected brittle failures. Corrosion of prestressing steel cables represents one of the most relevant aspect to investigate, being related to phenomena (such as localized pitting or hydrogen embrittlement) that cannot be detected without specific investigation techniques but that are responsible for relevant decrease of the mechanical properties of materials and modification of the failure modality. Predictive models calibrated basing on experimental results, may represent in presence of aggressive environmental conditions may represent an efficient tool for describing corrosion effects on the mechanical properties of strands and evaluating residual performance.The present work shows preliminary results of a wide experimental test campaign executed on corroded steel strands extracted from an existing prestressed concrete bridge with post-tensioned steel cables; hydrogen embrittlement effects are well visible on the mechanical properties of corroded strands. The peculiarity of the work lies in the availability of naturally corroded strands, with well-known external agents (rain, air, etc.) and exposure period. Preliminary results of FEM analyses on models calibrated basing on experimental tests’ results are even presented.

Review of Thermal Spray Coatings Perform in Protecting Boiler Steels Against Corrosion at High Temperatures

Failure of boilers can cause huge economic loss to the power plants. In high temperature and aggressive working conditions erosion, hot corrosion and abrasions are most responsible factors for failure of boiler steels. Thermal spray coatings are the preferable method to minimize the cause of failures of the boiler steels due to these problems. Among different thermal spray techniques. By utilizing the HVOF process, it is possible to produce coatings with high micro-hardness and low porosity, making it an advanced and effective method that is currently undergoing rapid development. In this paper a review study regarding the performance of thermal spray coatings deposited on boiler steels against the hot corrosion has been presented. The outcomes of this research have the potential to assist in identifying the optimal coating combination and application technique to prevent the deterioration of boiler steels.

Priorities for preserving the productive capacity of human potential of Ukraine in the light of the foreign countries’ policies

Purpose. The article summarizes the practical aspects of the policy of foreign states regarding the involvement of Ukrainian youth and the factors regulating their migration mobility with the aim of preserving the human capital of Ukraine in the conditions of russian aggression. Results. A significant increase in external migration flows among Ukrainian citizens as a result of hostilities and a deep socio-economic crisis in Ukraine had a significant impact on the demographic situation in the state and its regions, led to significant changes in the sex-age structure of the population, a rapid reduction in domestic demand and labor supply, changed the level of population concentration in many regions and caused a number of other significant challenges. However, the problem of migration of Ukrainian youth has become particularly important, since this category of the population is the most active and mobile, but also the least socially and psychologically protected, so it needs special support from the state and public institutions. High migratory mobility of young people to recipient countries can contribute to increasing financial income from tuition fees, integrating educational institutions into the international educational and scientific system, reducing costs for training and education of qualified specialists, increasing the concentration of labor potential, developing the industrial complex, stimulating economic growth, reduction of labor shortage, growth of GDP, increase of revenues to the state budget. But at the same time, it also has the opposite negative effect, which, in particular, is manifested in the growth of competition in the educational services and labor markets, the decrease in the number of jobs, the spread of unemployment, especially among young people without work experience, etc. The article is devoted to the study of effective ways of regulating the migration mobility of Ukrainian youth. The impact of the migration of Ukrainian youth caused by russian aggression on the human capital of Ukraine and the formation of opportunities for its preservation is evaluated. The authors outlines ways to form a rational migration and social policy, which will allow implementing an effective scenario of managing Ukraine’s youth potential at both at the national and regional levels. Scientific novelty. For the first time, the policy of many foreign countries regarding attracting the potential of Ukrainian youth is analyzed. The article outlines the initiatives of foreign scientific and educational institutions to support Ukrainian youth and their adaptation to the educational and social processes of recipient countries. Practical value. Based on the assessment of the migration mobility of the Ukrainian youth and the analysis of the main initiatives of foreign countries regarding the attraction of its potential in the environment of the recipient countries, recommendations were developed to regulate the migration mobility of the Ukrainian youth in order to preserve the human capital of Ukraine and provide opportunities for its reproduction and further development.

Protection of Cultural Heritage in the Conditions of a Full-Scale Russian-Ukrainian War: Lessons and Perspectives

The article is devoted to the optimization of the protection of the cultural heritage ofUkraine in the conditions of Russian aggression. It is proven that the aggressor is deliberately committingcultural genocide, destroying striking historical monuments, cultural, religious, and educationalobjects. The purpose of the research is to summarize typical problems in the preservation of culturalheritage of Ukraine during the full-scale Russian-Ukrainian war, to learn lessons from them and todetermine perspectives. In the conditions of war, preventive actions aimed at minimizing losses fromenemy attacks come first. Such actions include the early evacuation of movable assets from the frontlineterritories and the sheltering of immovable monuments from possible air attacks. It is important to takea comprehensive and systematic approach to the issues of recording acts of vandalism and documentingwar crimes against objects of cultural heritage. The strategy chosen by the Ministry of Culture andInformation Policy of Ukraine to create digital copies of cultural values, including museum exhibits,paintings, books, archival documents, etc., is justified under the conditions of martial law. This willallow, firstly, to preserve information about the monument even under conditions of destruction of thematerial medium itself, and secondly, to prove the national belonging of the monument in case of illegalexport abroad, to reasonably demand the return of valuables or restitution. One of the ways to optimizemonument protection activities is to bring the norms of domestic legislation to international standards,which will allow directly, without appeal to the articles of the Hague and Paris Conventions, to carryout judicial and investigative procedures based on national law. The article deals with the importanceof prospective planning for the restoration of the cultural heritage of Ukraine in the post-war period, theneed to return illegally exported valuables and restitution.

Transformations of the information space in the post-truth-age

Socio-political changes in the end of the 20th and the beginning of the 21st centuries in the conditions of geopolitical processes specified by the collapse of the Soviet and socialistic systems, rapid development of information-and-communication technologies have transformed information space. Contemporary Ukrainian journalism and its national information space have been established in interdependence with sociopolitical, economic, cultural-educational development of the independent Ukrainian state. Media were both a mirror and a catalyzer of the socio-political processes. Ukraine’s development in the current conditions of the military aggression and increased information threats creates a necessity to protect its national information space, to improve the system of information security and resist to information operations, and to decrease negative results of the impact of external information. Globalization of the information space and the increased scope of untrue information in the post-truth age require an expansion of the opportunities for media education, a development of critical thinking and enhancement of the level of citizens’ media literacy, their ability to counterstand manipulations both from inside and outside.

ДЕГРАДАЦІЯ ЗАЛІЗОБЕТОННИХ КОНСТРУКЦІЙ ЦЕХІВ НА ЗАВОДАХ ХІМІЧНОЇ ПРОМИСЛОВОСТІ

In this work, based on the analysis and synthesis of scientific and technical sources, the problem of degradation of concrete and reinforced concrete structures of workshops at chemical industry plants is formulated and its relevance is noted. A number of works on the specified problem are analyzed, in particular, the results of technical diagnostics of many buildings and structures, both newly built and in long-term operation, are described. The need for periodic technical diagnostics is noted and the appropriate proposals are formulated to restore (strengthen) the load-bearing capacity of such structures. Based on the completed full-scale studies of reinforced concrete structures in long-term operation of workshops in chemical industry plants, the main factors that significantly affect the reduction of the load-bearing capacity of reinforced concrete structures in aggressive air conditions at chemical industry enterprises are summarized. In particular, the following reinforced concrete structures were examined: columns, beams, trusses, covering slabs and wall panels and other structures at the Caustic Soda and Chlorine Plant (KSiH) and other plants of V.O. "Chlorvinyl" in the city of Kalush, Ivano-Frankivsk region, which were installed in 1968-1973. The destruction of the paint coating due to the action of wet gases HCl and Cl2, the destruction of ribbed panels with a paint coating due to the action of dry chlorine in the calcium tetrachloride workshop, as well as the action of salt corrosion, and the destruction of pipeline supports due to the action of dry chlorine are noted. These destructions are presented in this paper and shown in fig. 1. They are concluded to the following: to mistakes made during design; to defects and shortcomings in construction; to shortcomings in the operation of concrete and reinforced concrete structures, in aggressive environments. Recommendations for protecting reinforced concrete structures in accordance with the aggressive environments, which they are operated in, are given.

DEVELOPMENT OF THE ROMAN CATHOLIC CHURCH IN ODESA REGION (LATE XX – BEGINNING OF XXI CENTURY)

The purpose of the study is to highlight certain aspects of the development of the Roman Catholic Church (RCC) in Odesa region in the context of its problems and achievements at the end of the 20th – beginning of the 21st century. The scientific novelty of the work lies in the fact that, for the first time, a comprehensive study of the peculiarities of the development of the RCC in Odesa region against the background of historical events of the late 20th – early 21st centuries is proposed. On the basis of archival documents, the main stages of the activity of the RCC in Odesa region in the specified period are considered. It was found that the first stage on the way of the revival of the Church fell on the 1990s. Its characteristic features were the return of buildings previously confiscated by the Soviet authorities to Catholic communities, their reconstruction and restoration. During this period, it was possible to create a network of religious communities adapted to the conditions of activity in the plane of a multi-confessional environment. It is indicated that this process was under the control of the Department for Religious Affairs, which operated under the Odesa Regional State Administration during 1996-2005. It has been proven that the second stage of development of the RCC began at the beginning of the 21st century, which was due to the arrival of Pope John Paul II in Ukraine. The main achievements of this period are analyzed: the foundation of the new Odesa-Simferopol diocese headed by Bishop Bronislav Bernatsky, the increase in the number of believers, the activation of educational and charity work, activities aimed at improving inter-religious relations in the region. The intellectual and religious ties of the RCC with representatives of state structures and the public have been clarified. In the conditions of full-scale Russian aggression, the RCC took an active position in supporting the population of Ukraine and providing them with appropriate humanitarian aid. Further studies of church history include research on the construction of Christian churches in the south of Ukraine.

State control in the field of energy in Ukraine: concepts and features

The article, based on the analysis of doctrinal sources, definesthe concept and outlines thefeatures of state control in the field of energy in Ukraine. It was emphasized that the energy security of the state in the conditions of unprovoked aggression by the Russian Federation has become one of the key challenges faced by our state. It is not only a matter of systematic and brutal shelling of energy infrastructure facilities carried out by an enemy state, but also of violations of energy legislation by energy market participants (both consumers and service providers). A significant change in external risk factors, internal destabilization, and attempts to destroy the energy potential of the state lead to the actualization of research on the legal basis of state control in the field of energy, the study of both the theoretical foundations of this issue, and the peculiarities of control activities in this field.
 The signs of state control are formulated, in particular: it is a function of public administration, the purpose of which is to influence controlled objects; has a purposeful influence - compliance and fulfillment by control objects of the requirements of current legislation, avoidance of offenses, prevention, provision of organizational support, etc.; carried out exclusively in the manner specified by law by specially authorized relevant entities; has the nature of planned and unplanned impact, applied with a certain periodicity; is applied within the term clearly defined by law; may provide for operational intervention in the activity of the controlled object, by applying measures including administrative warning or administrative suspension.
 It is summarized that state control in the field of energy in Ukraine is a function of public administration, which involves a targeted influence on the energy field as a set of economic sectors that study and use energy resources for the purpose of energy production, transformation, transmission and distribution, which is applied by a specially authorized sub object in certain forms and methods, taking into account the specifics of control activity, defined by a special law, has a direct goal, functions and tasks, the list of which is determined by the scope of application of state control.

INSTITUTIONAL ORGANIZATIONAL AND ECONOMIC FOUNDATIONS OF BUSINESS DEVELOPMENT BASED ON INTEGRATION AND COOPERATION IN THE CONDITIONS OF MARTIAL STATE

The article reveals the institutional, organizational and economic foundations of entrepreneurship development based on integration and cooperation in wartime conditions. The theoretical and methodological foundations of integration-cooperative relations in the agrarian sphere and modern practices of integrated structures te formation and functioning are analyzed. The main essential characteristics of the main types of integration are considered, with the definition of the main economic interests, which are stimulating factors of the institutional ability to realize the potential of combining economic and social capabilities of entrepreneurs in the agrarian sector of the national economy. The main problems of the development of agrarian entrepreneurship in the conditions of Russian military aggression are determined, with an assessment of the role of integration processes in overcoming negative phenomena. Conceptual assessments of the development of entrepreneurship with using of the cooperation mechanism to strengthen institutional capacities of the effective functioning of the agrarian sector of the Ukrainian economy in wartime conditions have been updated. The main trends of state support for the development of entrepreneurship in agriculture are characterized and the priority directions of state influence to strengthen the economic positions of small and medium-sized agricultural enterprises are determined. Methods used: monographic, comparative, expert assessment. Organizational and economic trends were identified and institutional dynamics of entrepreneurship development based on cooperation and integration under the influence of wartime risks were established. Keywords: entrepreneurship, integration, cooperation, agricultural sector, regulation

The Influence of Aggressive Environmental Conditions on the Adhesion of Applied Crystalline Materials

Crystalline coatings are waterproofing systems used for additional protection against increased moisture and subsurface water ingress. Even though these crystalline materials are commonly used in moisture-protective systems, they have not yet been sufficiently scientifically described. The weakest link in the chain of interaction between crystalline coatings and underlying concrete is the transition zone. To increase knowledge of the interaction between these materials, a series of experiments was prepared using a specially formulated protective mortar as the final surface layer, with the function of additionally waterproofing the structure. An experimental study of the adhesion of surface layers based on secondary crystallization to provide additional protection to concrete structures loaded with moisture or ground water exposure is presented in this paper. The series of experiments carried out consisted of an analysis of protective crystalline mortar adhesion to concrete samples of identical composition. A set of experimental measurements under the influence of various boundary conditions was carried out to determine the bond strength between two different materials. For the experimental measurements, the materials were exposed to aggressive environments for which durability verification had not yet been performed. A modified protective mortar with crystalline admixture was used as an overlayed material. This mortar worked similarly to a crystalline coating after application. Over time, there was penetration of the underlaying concrete and a secondary hydration of the cement matrix which resulted in the waterproofing of the structure. The test samples were exposed to aggressive environmental conditions in the form of freezing–thawing cycles and a carbonation process. Pull-off tests were carried out on every test sample to determine the strength of the surface layers. The penetration of the crystalline agent into the base concrete was confirmed with an SEM observation. The results of the experimental program showed that exposure to the aggressive environment further reduced the strength of the modified mortar containing the crystalline admixture. However, the bond strength between the concrete and the modified mortar exceeded the tensile strength of the concrete.

Current Status and Features of the Development of Technoparks in Ukraine

Introduction. The R&D potential of innovation infrastructure entities is a key factor in the implementation of innovation-driven development of the national economy, with technology park being precisely the innovation structure that unites it, ensuring the functioning of the model.Problem Statement. Many aspects of regulatory, financial, and information framework of technoparks have been not settled so far. Methodological approaches to assessing the park efficiency have been underdeveloped. In this context, there is the necessity in the theoretical justification and the formation of a holistic view of the status and features of their activity in the conditions of the protracted aggression of the Russian Federation against Ukraine.Purpose. The purpose of the research is to analyze the problems of domestic technology parks, to identify their capabilities, and to determine the trends in their development under the present-day conditions.Material and Methods. The methods of dialectical and complex research have been employed: the empirical evaluation to identify the available methods of evaluating the activity of technoparks; the theoretical and cognitive analysis to determine the essence and to justify the features of technology parks; the general methods to identifymethodological problems of integrating technology parks into the financial system and describing approaches to the concept of an innovation form of business.Results. The development of technology parks in Ukraine, their government support, systematized criteria for evaluating their efficiency have been analyzed. It has been determined that the priority in the creation of technology parks should be given to industries with high export potential. It has been proven that technology parks minimize the duration of the "research-development-implementation" cycle, the main tasks for their improvement in Ukraine have been outlined.Conclusions. Technoparks are the most successful form of integration of science and production, which ensures rapid development, implementation, and use of innovations. Improving the legal framework for their operation in order to create the same operating conditions for all, not only for "selected" technology parks, increases competition between them, while modernizing the tax policy contributes to the growth of in-house sources of financing and their direction to the development of promising innovation projects.

Unraveling the Slurry/Substrate Interfacial Reaction Mechanism for Wide Band Gap (WBG) Chemical Mechanical Planarization (CMP)

Wide band gap (WBG) semiconductors have become of great interest to extend Moore’s Law beyond the limitations of current Si IC technology. More specifically, WBG materials (i.e., Silicon Carbide and Gallium Nitride) have been shown to increase performance due to their intrinsic properties (i.e., high capacitance, thermal stability, and wear resistance) associated with these materials. Current CMP processing of these WBG materials utilizes aggressive chemical conditions (i.e., abrasive nanoparticles and harsh oxidizers) and increasing shear forces to obtain the desired material removal rates (MRR) and surface planarity. Unfortunately, these processing conditions can cause defectivity (i.e., organic residue, pad debris, scratches, etc.) during the polishing process, leading to increasingly complex post-CMP cleaning steps. This work focuses on the strategic design of chemically activated, peroxide-based CMP slurries for emergent materials that target redox activation at the slurry-substrate surface interface to achieve improved CMP performance (i.e., enhanced material removal rates, superior surface quality, and low defects). More specifically, the catalytic generation of reactive oxygen species (ROS) (i.e., hydroxyl radical (*OH) and singlet oxygen (1O2)) at the substrate interface via surface complexation during the polishing process is exploited. The generated ROS can weaken the Si-C bonds within the surface of the substrate, allowing the particles to remove the surface more readily. This work explored organometallic complexes and non-metal catalysts, such as boron-based additives, as surface-active redox modulators. Initial results show that lower-stability complexes result in equally low MRR ranges below 400 nm/hr, while highly stable complexes increase the MRR as high as 1600 nm/hr. This complex stability/MRR trend has been further correlated to changes in the electron-poor areas of the complexes and ROS generation via radical trapping. The surface roughness analysis has shown improved surface quality between 0.8-1.0 nm across the substrate; however, organic residues from the complexes remain. Transitioning to non-metal boron electrophiles has shown similar MRR results (1000-1400 nm/hr) but can alleviate surface contamination. This implementation of Araca. Inc.’s patent-pending Flucto-CMP® technology employs megasonic energy to promote enhanced ROS generation, thus accelerating removal and significantly improving surface defectivity.

Effect of Structure to Promote Organic Residue Removal during Cu Post-Chemical Mechanical Planarization (p-CMP) Cleaning

The extension of Moore’s law remains a focal point as semiconductor manufacturers drive to advance Integrated Circuit (IC) technology by implementing new materials. Chemical Mechanical Planarization (CMP) has emerged as a critical processing step in device fabrication to keep up with these demands. However, one drawback to this process is the generation of killer defects that result from residual contamination (i.e., organic residues, abrasive particles, pad remnants, etc.) that are reliant on post-CMP (p-CMP) cleaning methods. Current Cu p-CMP cleaning methods implement the use of an industry standard polymer brush coupled with cleaning chemistries to remove residual contamination. It has been well established that shear and compressive forces coupled with surface active cleaning chemistries have proven to be efficient albeit with the potential for secondary defectivity (i.e., pitting, etching, scratching). Additionally, current cleaning formulations rely on additives that promote aggressive redox conditions to remove residues through an undercutting mechanism, which leads to the propagation of the aforementioned defect modes. This work focuses on the development of a “softer” approach to Cu p-CMP cleaning by surveying various additives (i.e., -unsaturated carboxylic acids, carboxylic acids, and unsaturated benzaldehydes) to exploit an “overcutting” mode of organic residue removal. By implementing additional modes of interaction (i.e., p-stacking, H-bonding, conformational relationships, etc.), the mode of residue removal can be finely tuned to achieve desired surface-active conditions. This work employs a suite of techniques (i.e., Tafel analysis, OCP vs. time, time-resolved contact angle, shear force analysis) to correlate structure-activity to organic residue removal efficiency and the effects on the coefficient of friction (COF), particle removal efficiency, and the generation of secondary defectivity. Initial results have shown that implementing an “overcutting” mechanism will decrease the overall shear force and significantly reduce the proliferation of p-CMP cleaning defects. Furthermore, adding ancillary structure activity aids in additional modes of residue interaction to alter removal at the liquid-brush interface. Additionally, increased structure-activity has promoted residue-chemistry interactions to form a second passivation layer. Moreover, conformational changes that result in limited accessibility to the a,b-unsaturated double bond promote an “undercutting” mode of removal to become the predominant mode of organic residue mediation.

Survey of Activated Cleaning Chemistries for Low-Stress Post-Chemical Mechanical Planarization Cleaning of Silicon Carbide

Integrated Circuit (IC) technologies have begun transitioning to wide band gap (WBG) substrates (i.e., Silicon carbide (SiC)) due to the intrinsic properties (i.e., high capacitance, thermal stability, and wear resistance) of these semiconducting materials. This has led to the development of Chemical Mechanical Planarization (CMP) processes that use aggressive chemical conditions and increasing mechanical forces to reach optimal material removal rates (MRR). The harsh CMP process parameters often result in contamination/defectivity (i.e., organic residue, abrasive particles, etc.) left on post-polish substrate surfaces and thus posing difficulty within the post-CMP cleaning process. Traditionally, post-CMP cleaning utilizes a polyvinyl alcohol (PVA) brush scrubbing method on the substrate surface. This has been shown to cause secondary defects (i.e., scratches, particle agglomerations, etc.) that inevitably lead to overall device failure. Alternative post-CMP methods utilize non-contact cleaning via megasonic energy to target removing defects (i.e., organic residue, pad debris, particle agglomerations, etc.) and avoid secondary defect generation. This research surveys post-CMP cleaning processes (contact and non-contact) on SiC substrates with various cleaning chemistries (i.e., supramolecular surfactants, catalytic complexes for generating reactive oxygen species (ROS), non-metal catalyst). Initial results show that supramolecular surfactants can produce high particle removal efficiency (PRE) due to their ability to be broken down into their monomeric units and encapsulate any removed residue under both brush and megasonic conditions Additionally, increased ROS generation disrupts the non-covalently adsorbed defects to the SiC surface and leads to an increased cleaning efficiency while decreasing the overall variability of particle removal results. Combining the ROS systems' disruptive power with surfactants' encapsulation mode, a highly efficient clean with low variability can be achieved under low-stress conditions.

Predicting the Heat Generation Rate in Large Format Pouch-Type Lithium-Ion Battery Cells for Automotive Applications

Accurate prediction of the heat generation rate of lithium ion batteries is critical for driving towards a cost effective and efficient design of a thermal management system for various applications.[1, 2] because of the increase in battery cell dimensions associated with an increase in battery cell capacity to drive towards a reduction in range anxiety for automotive applications, as well as more aggressive operating conditions that are typically seen in the automotive industry, such as direct current fast charge and sustained driving under load, heat generation at the cell level must be considered as spatially nonuniform during operation. Proper design of the thermal management system requires prediction[3] of the heat generation of the battery cell in both a lumped fashion for system sizing, as well as a distributed mode in order to focus cooling appropriately to decrease local temperature extremes. Local temperature extremes can adversely affect the aging of the battery cell due to the non-uniformities in electrochemical utilization of the active material, increased local reaction rates, and increased mechanical stresses in active materials.In this work, we detail our efforts to characterize the heat generation[4] of a battery cell under a variety of operating conditions, quantify the impact of temperature non-uniformities[5] on the aging of the battery cell, and experimentally[6, 7] evaluate the localized aging in the battery electrodes based on local temperature conditions. Here, we will describe the modeling methods developed to link operating conditions, aging, and heat generation with the electrochemical performance of the battery cell. A discussion of the model performance for relevant automotive applications will also be included.References M. Song, Y. Hu, S.-Y. Choe and T. R. Garrick, J Electrochem Soc, 167, 120503 (2020).Y. Hu, S.-Y. Choe and T. R. Garrick, Electrochim Acta, 362, 137124 (2020).M. Song, Y. Hu, S.-Y. Choe and T. R. Garrick, J Electrochem Soc, 169, 070502 (2022).Y. Hu, S.-Y. Choe and T. R. Garrick, Applied Thermal Engineering, 189, 116709 (2021).Y. Hu, S.-Y. Choe and T. R. Garrick, J Power Sources, 532, 231350 (2022).U. Janakiraman, T. R. Garrick and M. E. Fortier, J Electrochem Soc, 167, 160552 (2020).T. R. Garrick, J. Gao, X. Yang and B. J. Koch, J Electrochem Soc, 168, 010530 (2021).