Power Source Research Articles

A Scalable Fully Printed Organic Thermoelectric Generator for Harsh Environments Enabled by a Stable n‐type Polymer

AbstractAffordable and versatile power sources become crucial as miniaturized electronics and sensors become more widespread. Organic thermoelectric generators (TEGs), capable of tapping into wasted heat sustainably and economically, are viewed as key enablers for powering the sensor networks of the future. Until recently, the performance of n‐type organic thermoelectric materials has severely lagged behind their p‐type counterparts. However, reports of a stable and highly conductive n‐type polymer, poly(benzodifurandione) (PBFDO), are changing this notion. Nonetheless, validation of PBFDO as a suitable ink for scalable fabrication processes and integration of the material into a scalable organic TEG have yet to be demonstrated. This work presents the development, characterization, and optimization of a PBFDO ink for use in a scalable inkjet printing process. The n‐type ink is then integrated into a screen‐printed origami‐inspired architecture, resulting in a 21‐leg PEDOT:PSS/PBFDO organic TEG capable of delivering a record‐high normalized power density among reported polymer‐based TEGs of 0.718 nW cm−2 K−2. Moreover, the module ambient stability is demonstrated for up to 90 d, while its use for potential applications in harsh environments is validated for a temperature range of ‐8 °C to 200 °C and up to 90% relative humidity, a first for organic TEGs.

Piezoelectric Scaffolds as Smart Materials for Bone Tissue Engineering.

Bone repair and regeneration require physiological cues, including mechanical, electrical, and biochemical activity. Many biomaterials have been investigated as bioactive scaffolds with excellent electrical properties. Amongst biomaterials, piezoelectric materials (PMs) are gaining attention in biomedicine, power harvesting, biomedical devices, and structural health monitoring. PMs have unique properties, such as the ability to affect physiological movements and deliver electrical stimuli to damaged bone or cells without an external power source. The crucial bone property is its piezoelectricity. Bones can generate electrical charges and potential in response to mechanical stimuli, as they influence bone growth and regeneration. Piezoelectric materials respond to human microenvironment stimuli and are an important factor in bone regeneration and repair. This manuscript is an overview of the fundamentals of the materials generating the piezoelectric effect and their influence on bone repair and regeneration. This paper focuses on the state of the art of piezoelectric materials, such as polymers, ceramics, and composites, and their application in bone tissue engineering. We present important information from the point of view of bone tissue engineering. We highlight promising upcoming approaches and new generations of piezoelectric materials.

Energy Consumption in Wheat-Rice Cropping System in Punjab

Energy consumption for crop production depends on the availability of energy sources and the capacity of the farmers. This study analyzed energy sources used by farmers for wheat and rice production and identified agricultural operations where energy consumption can be reduced so that operational costs in wheat-rice production system can be lowered. Data on energy use in wheat and rice cropping system was collected by interviewing the farmers using specially designed questionnaire. Relevant information pertaining to human labour use, sources of irrigation, number of irrigations to each crop, quantity of farm inputs, utilization of mechanical power sources and grain yield etc. were collected. The average output energy of grain, input energy, energy ratio and specific energy for wheat crop in the state of Punjab were 68347 MJ ha-1, 15644 MJ ha-1, 8.4 and 3.08 MJ kg-1, respectively. The average output energy of grain, input energy, energy ratio and specific energy for rice were 115888 MJ ha-1, 16438 MJ ha-1, 14.8 and 2.09 MJ kg-1, respectively. For wheat-rice cropping system, the average output energy of grain, input energy, energy ratio and specific energy were 184234.4 MJ ha-1, 32081.4 MJ ha-1, 11.7 and 2.48 MJ kg-1, respectively. Energy ratio (output energy to input energy ratio) of rice is higher than the wheat, indicating rice efficiently utilized energy resources to convert into output of the harvested crop. Similarly, lower specific energy (input energy to yield ratio) of rice as compared to wheat also indicates lower energy consumption to produce per unit of rice. This analysis clearly indicates that rice production is more energy efficient than wheat production in rice-wheat production system. Further, the energy ratio, specific energy and energy productivity of wheat-rice cropping system were estimated as 11.6 to 11.9, 2.44 to 2.51 MJ kg-1 and 0.40 to 0.41kg MJ-1, respectively. This study will be helpful to identify the agricultural operations and implementing suitable interventions for improving energy use efficiency.

Old Wine in New Bottles: The Technological Promise of Biorefinery In Historical Perspective.

Biorefineries are often lauded as revolutionary, sustainable new sources of power. This article critically examines biorefineries from historical and environmentalist perspectives, highlighting flaws such narratives. It proposes an alternative to the biorefinery paradigm that draws on critical environmentalist scholarship, French political ecology and the German tradition of sanfte Chemie (soft chemistry). History, the article argues, is crucial for identifying technological dead ends.

Key organisational barriers to effective knowledge risk management in South African public sector enterprises

Purpose: The aim of this study was to delve into the obstacles preventing the effective management of tacit knowledge risks in South African public sector enterprises (PSEs) from the perspectives of human resource management (HRM) and knowledge management (KM).A perusal of the literature reveals that most South African PSEs are grappling with significant challenges related to potential tacit knowledge loss risks.Design/methodology/approach: The research utilised a mixed methods exploratory sequential design, collecting qualitative data through interviews with 20 HR managers in 9 PSEs and survey data from 585 questionnaires. The reliability of the data was tested, and thematic analysis was performed using Atlas.ti software.Findings: The study identified key barriers to effective tacit knowledge loss risk management in PSEs, including a silo mentality, organisational red-tape, knowledge as a power source, lack of recognition and rewards, KM awareness, cultures and structures, employment equity, fixed-term contracts, competing priorities for leadership, knowledge hoarding, HRM practices, and inadequate KM technologies and systems. These pressing issues need to be addressed to improve knowledge risk management (KRM) efforts in PSEs.Research limitations/implications:The exploration of organisational barriers was only limited to the tacit knowledge loss risks category, induced by human resource turnover in country-specific PSEs. Future studies could explore the organisational barriers and factors affecting other types of knowledge risks in PSEs or similar knowledge-intensive business enterprises across the globe using different samples and populations. Other similar studies could include strategic sectors of the economy such as energy generation, civil aviation, defence, mining and rail. The study contributes to the knowledge-based view and knowledge stickiness theories, and proposes an interdisciplinarity approach using mixed methods for future research on tacit knowledge loss.Practical implications: The research findings conclusively indicate that PSEs face the aforementioned barriers that hinder the effective implementation of the KRM system. This study identifies that key organisational barriers were mainly due to a lack of knowledge-driven HRM strategies in KM. To address these barriers, HR managers and other stakeholders must collaborate to ensure effective knowledge management and mitigate the negative impact of knowledge loss risks on organisational performance.Social Implications: The study highlights the importance of removing key barriers for improved KRM in PSEs. The improved KRM can enhance public service delivery efficiency, transparency and the accountability of PSEs by addressing socio-economic developmental issues in developing economies.Originality/value: Using South African PSEs as a case to address this challenge, the paper sought to explore key organisational barriers to effective knowledge loss risk management in organisations with a view to shaping discourse, policies, research, theories and practices in KM and HRM. Organisational barriers affecting the management of such risks remain unexplored in the extant body of knowledge and practice.

Technological Methods and Equipment for Plasma-Electrolytic Processing of Metals and Alloys

The proposed review presents the results of the analysis of the equipment and technological methods for implementing the plasma electrolytic chemical-thermal treatment and plasma electrolytic polishing. A group of methods based on the immersion of workpieces in an electrolyzer was considered, as well as a method of a local treatment by the jet feed of an electrolyte to the area of the surface being treated. The influence of the design and characteristics of the electrolyzer, the power source and the system for feeding the work-piece into the electrolyte on the specifics of plasma electrolytic treatment methods is shown. Technological methods improving the quality and productivity of treatment are considered. Limitations in the applicability of the existing equipment were revealed, and the prospects for the improvement in the field of development of equipment and technologies for plasma electrolytic treatment were determined.

Efficient Permeable Monolithic Hybrid Tribo-Piezo-Electromagnetic Nanogenerator Based on Topological-Insulator-Composite.

Escalating energy demands of self-independent on-skin/wearable electronics impose challenges on corresponding power sources to offer greater power density, permeability, and stretchability. Here, a high-efficient breathable and stretchable monolithic hybrid triboelectric-piezoelectric-electromagnetic nanogenerator-based electronic skin (TPEG-skin) is reported via sandwiching a liquid metal mesh with two-layer topological insulator-piezoelectric polymer composite nanofibers. TPEG-skin concurrently extracts biomechanical energy (from body motions) and electromagnetic radiations (from adjacent appliances), operating as epidermal power sources and whole-body self-powered sensors. Topological insulators with conductive surface states supply notably enhanced triboelectric and piezoelectric effects, endowing TPEG-skin with a 288V output voltage (10 N, 4Hz), ∼3 times that of state-of-the-art devices. Liquid metal meshes serve as breathable electrodes and extract ambient electromagnetic pollution (±60V, ±1.6µA cm-2). TPEG-skin implements self-powered physiological and body motion monitoring and system-level human-machine interactions. This study provides compatible energy strategies for on-skin/wearable electronics with high power density, monolithic device integration, and multifunctionality.

Experimental studies on penetration process of high-speed water-jet into ballistic gelatin

To reveal the penetration mechanism and present the penetration characteristics of high-speed micro-jet with injection volume larger than 0.3mL into soft tissue, the present study conducted experimental research on high-speed water-jet penetration into ballistic gelatin. The free jet dynamics of an air-powered needle-free injector that can emit up to 1.27mL of liquid at once and the penetration dynamics were visualized to reveal the details of the penetration process. In the early unstable stage, the jet is emitted in the form of pulses, and the first jet pulse can rapidly generate an initial slender channel in gelatin in a very short time. In the subsequent stable stage, energy input produces dispersion and further increases the penetration depth slowly. Changing the driving pressure by the power source mainly changes the penetration depth increment by dispersion; while changing the nozzle diameter mainly affects the penetration depth in the initial stage. The central position of the dispersion area in the injection direction was firstly defined in the present work and it was found that an approximate linear relationship between this position and the maximum penetration depth exits for different nozzle diameters and driving pressures when injecting the same liquid dose. These research results can provide a basis for a thorough understanding of the penetration characteristics of high-speed micro-jet with injection volume larger than 0.3mL into soft tissue, as well as the design and operation of the air-powered needle-free injector.

Perancangan Perancangan Sistem Trasmisi Mesin Pres Hidrolik Kapasitas 3 Ton Dengan Penggerak Motor listrik

Technological advances have encouraged improvements in the industrial sector in developing countries, including Indonesia. This is of course supported by several factors, including the use of modern equipment as a substitute for human labor. It can be said here that the more modern an industry is, the more machine power is used while the less human power is needed. As human needs become increasingly greater, the machine industry is currently also developing very rapidly. Developments in the industrial sector are marked by the creation of various types of machines that can assist human activities. The use of machines can help human activities or work to be more efficient in terms of completion time, as well as reducing the risk of work accidents. Currently, machines are used as tools that have high automation and precision. Therefore, many people use machines for everything, one of which is a pressing machine. A pressing machine is a tool made to compress or press an object, the power source can come from hydraulics, human power, electric motors and others. The aim of this final project is to design a transmission system for a 3 Ton Semi-Automatic Hydraulic Press Machine with an electric motor drive. It can increase the author's knowledge, insight and experience regarding planning a machine. Conclusion Ball bearings with type 6203 require an installation time of 1 minute 35 seconds and removal of 1 minute 32 seconds. Ball bearings of type 6305 receive a pressure of 400 psi to be installed on the shaft, and when released the pressure produced is the same, namely 400 psi to be able to leave the shaft. A type 6206 ball bearing with a shaft length of 77 mm takes 3 minutes 32 seconds to install, while the same shaft length takes 3 minutes 22 seconds to remove from the shaft.

On the Energy Budget of Starquake-induced Repeating Fast Radio Bursts

With a growing sample of fast radio bursts (FRBs), we investigate the energy budget of different power sources within the framework of magnetar starquake triggering mechanism. During a starquake, the energy can be released in any form through strain, magnetic, rotational, and gravitational energies. The strain energy can be converted from three other kinds of energy during starquakes. The following findings are revealed: (1) The crust can store free magnetic energy of ∼1046 erg by existing toroidal fields, sustaining 106 bursts with frequent starquakes occurring due to crustal instability. (2) The strain energy develops as a rigid object spins down, which can be released during a global starquake accompanied by a glitch. However, it takes a long time to accumulate enough strain energy via spindown. (3) The rotational energy of a magnetar with P ≲ 0.1 s can match the energy and luminosity budget of FRBs. (4) The budget of the total gravitational energy is high, but the mechanism and efficiency of converting this energy to radiation deserve further exploration.

Late Jets, Early Sparks: Illuminating the Premaximum Bumps in Superluminous Supernovae

Superluminous supernovae (SLSNe) radiate ≳10–100 times more energy than ordinary stellar explosions, implicating a novel power source behind these enigmatic events. One frequently discussed source, particularly for hydrogen-poor (Type I) SLSNe, is a central engine such as a millisecond magnetar or accreting black hole. Both black hole and magnetar engines are expected to channel a fraction of their luminosity into a collimated relativistic jet. Using 3D relativistic hydrodynamical simulations, we explore the interaction of a relativistic jet, endowed with a luminosity L j ≈ 1045.5 erg s−1 and duration t eng ≈ 10 days compatible with those needed to power SLSNe, launched into the envelope of the exploding star. The jet successfully breaks through the expanding ejecta, and its shocked cocoon powers ultraviolet/optical emission lasting several days after the explosion and reaching a peak luminosity ≳1044 erg s−1, corresponding to a sizable fraction of L j . This high radiative efficiency is the result of the modest adiabatic losses the cocoon experiences owing to the low optical depths of the enlarged ejecta at these late times, e.g., compared to the more compact stars in gamma-ray bursts. The luminosity and temperature of the cocoon emission match those of the “bumps” in SLSN light curves observed weeks prior to the optical maximum in many SLSNe. Confirmation of jet breakout signatures by future observations (e.g., days-long to weeks-long internal X-ray emission from the jet for on-axis observers, spectroscopy confirming large photosphere velocities v/c ≳ 0.1, or detection of a radio afterglow) would offer strong evidence for central engines powering SLSNe.

Photovoltaic Pumping Tests: a Novel Supervision Method for Photovoltaic Water Pumping Systems

Water pumps powered by photovoltaic energy, often named ‘photovoltaic water pumping systems’ (PVWPS), offer a promising solution for improving water access in developing regions. Regular pumping tests are essential for characterizing boreholes and ensuring sustainable groundwater extraction. Traditionally, these tests are conducted only at the time of PVWPS installation using diesel pumps. However, since PVWPS typically have a lifespan of around 20 years, the borehole's condition may change over time, necessitating ongoing testing. To overcome this challenge, this article presents a novel method for conducting pumping tests using the PVWPS’s own photovoltaic modules as the power source, greatly simplifying regular borehole monitoring over the PVWPS’s lifespan. This approach improves the long-term technical sustainability of PVWPS. By eliminating the need for diesel generators, it reduces also costs, emissions, and logistical complexity while ensuring continuous water supply during testing. The principle and protocol for these proposed tests are outlined, as well as the key indicators for analysis. Furthermore, the associated costs and benefits are thoroughly explored. The proposed method is applied to a PVWPS in a village in Burkina Faso. This PVWPS has 750 Wp of photovoltaic modules, a 10 m³ water tank, and a 56 m borehole. Results show that the photovoltaic pumping tests allow to accurately determine borehole parameters, achieving a model fit with an average R2 of 0.99. Additionally, a photovoltaic pumping test costs $43, which is significantly lower than standard pumping tests: a multiple step drawdown test costs $511 and a long pumping test costs $2050. Moreover, the proposed photovoltaic pumping tests can prevent premature replacements of PVWPS components, leading to significant savings. While demonstrated in a specific context, this method is transferable to other systems, offering potential benefits for companies, local authorities, governments, and NGOs involved in the development and maintenance of PVWPS in rural areas.

Hydrological dynamics of the shire river: Insights from baseflow and recession analysis

The Shire River, a vital waterway in Malawi, plays a pivotal role in the country's economy, serving as a source of electrical power and irrigation for surrounding communities. This study investigates the hydrological dynamics of the Shire River by examining its flow components and the influence of baseflow under varying climatic conditions. Through meticulous baseflow separation using the Eckhardt recursive digital filter and recession analysis, Lake Malawi emerges as the primary contributor to the river's baseflow, sustaining approximately 80%–82% of total flows annually of which about 78% is contributed during wet seasons. Moreover, an inverse relationship between baseflow and rainfall is observed, highlighting the significance of baseflow augmentation during drier periods. Baseflow analysis of wettest and driest years further elucidates precipitation's impact on baseflow fluctuations, emphasizing the intricate interplay between precipitation patterns and baseflow dynamics. Therefore, to ensure the sustainable management of the Shire River, it is crucial to implement policies that support the conservation of groundwater resources and the efficient allocation of water during varying climatic conditions. Overall, this study provides valuable insights into the hydrological processes of the Shire River, contributing to enhanced understanding and sustainable management of this essential water resource.

Analysis of Metal Fused Filament Fabrication process chain for 316L stainless steel

Metal Fused Filament Fabrication (MFFF) has emerged as a prominent technology in Additive Manufacturing (AM), characterized by its cost-effectiveness, versatility in creating intricate geometries using diverse materials, and widespread availability of AM machines. However, the intricate processes of making filament, printing, debinding, and sintering in MFFF pose unique challenges, with a vast number of parameters influencing each stage. Specialized companies handle these stages for research purposes, yet detailed information on the processes remains limited. The objective of this research is to conduct a meticulous examination of the parameters governing the printing, debinding, and sintering of 316L stainless steel—a material widely employed in various industries. The goal is to provide researchers and manufacturers with a comprehensive understanding, enabling them to achieve high-density metal parts that rival those produced through Selective Laser Melting (SLM). This research employs a systematic approach in producing flawless metal parts through fine-tuning parameters such as printing speed, nozzle diameter, extruder and construction table temperatures, heating rate, nitric acid injection during debinding, and sintering atmosphere and temperature. Despite advancements in MFFF parameters in this study, a comparative analysis with SLM reveals superior mechanical properties and density in SLM-produced parts. Because, the robust bonding facilitated by a powerful energy source (laser) in SLM minimizes porosities, whereas MFFF relies solely on molten filament adherence, potentially leading to small gaps between layers. This research contributes valuable insights for achieving dense, defect-free metal parts through Metal Fused Filament Fabrication (MFFF). It sheds light on the persistent advantages of Selective Laser Melting (SLM) in terms of mechanical performance and density. The comprehensive understanding of parameters provided in this study empowers researchers and manufacturers to optimize MFFF processes for 316L stainless steel, narrowing the gap between the two technologies (MFFF and SLM) and enhancing the competitiveness of MFFF in producing high-quality metal parts.

Critical lines dynamic identification for grid-connected wind power system under N-k contingency based on Oscillating equations

Abstract As the penetration rate of wind power and other renewable energy sources increases, power systems are more prone to experiencing multiple component failures, known as N-k contingency Identifying and then closely monitoring and protecting critical components during N-k contingency can effectively prevent widespread cascading failures. The primary task in identifying critical components is to model the power system; A refined model better captures the time-varying characteristics of electrical components. Therefore, a dynamic model of line power flow decay and oscillation based on swing equations is established; it introduces time-varying saturated cut-set and transfer margin indices to identify critical lines. Simulations on the IEEE-118 nodes system, along with MATCASC cascading failure simulations, demonstrate that targeting identified critical lines as deliberate attack points in the grid results in a normalized remaining load demand decrease to 50% of the original.

Continuous Health Monitoring of Reinforced Concrete Bridge Deck based on Traffic Load-induced Acoustic Emission

This paper presents continuous bridge deck monitoring based on b-value obtained from traffic load-induced acoustic emission (AE) signals. Using the self powered AE system that we developed, we have observed traffic load-induced AE on an actual bridge for five years. The developed self-powered AE system demonstrated that long-term traffic load-induced AE measurements over five years could be performed without an external power source. Traffic load-induced AEs measured irregularly by event-driven measurement were accumulated, and b-values were calculated. We used an additive regression model that accounts for piecewise linear trends and seasonality to extract long-term trends accurately. Over the past five years, the bridge has deteriorated. In addition, repairs were made during the period. As a result of this monitoring, we determined the relationship between the damage condition of the bridge and the b-value trend obtained from the traffic load-induced AEs. The results confirmed that the b-value based on traffic load-induced AE corresponds well with the damage conditions on the underside of the deck slab or in a shallow area inside it.

Research on distributed optimal scheduling method based on consensus

Abstract With access to large-scale distributed power sources, the physical structure of the power grid system tends to be distributed. The application of traditional centralized optimal scheduling methods will lead to a surge in communication overhead and computational complexity, which will affect the performance and efficiency of the solution. In this paper, the minimum operating cost of the system is taken as the goal, and the distributed direct current optimal power flow (DC-OPF) optimization calculation of the photovoltaic-storage power generation system is considered to approximately solve the economic dispatch problem. The DC optimal power flow model with energy storage charging penalty is constructed. Then, the distributed optimization method based on the consensus alternating direction multiplier method (ADMM) is adopted. By decoupling the objective function and constraints of the whole system problem, the fully distributed DC-OPF calculation is realized by introducing the global consensus variable to deal with the boundary buses. Finally, the improved IEEE 30-bus example is used to test the method, and the simulation results verify the convergence and accuracy of the method.

Frequency and impact of incorrect data when assessing MR safety for patients with active implants

ProblemAn active implant is a medical device that includes a power source and provides diverse therapies to patients. Active implants are a source of risk to patients undergoing magnetic resonance (MR) imaging. Institutions develop workflows to ensure devices are assessed for MR safety and scanned using acceptable acquisition parameters. Low data integrity can result in incorrect assessments and increased patient risk. Approach and InterventionThe rate of data integrity issues and their causes were not known at our institution. Between March 2020 and April 2023, a survey was distributed for each MR implant case recording the information used to assess MR safety of the implanted device. The leading cause of data integrity loss was incorrect vendor manual for the implant. A list of links to implant vendor manual repositories was added to our workflow in December of 2021 with instructions to always find the most recent version of the device manual. Outcomes749 patient records were reviewed by MR safety experts. Data integrity issues, i.e., a lack of complete and/or correct patient and implant information, occurred in 16% of cases and could impact MR safety (assessment or scanning) in 47% of those cases. A missing or incorrect manual was the leading cause of data integrity loss (78%). The incorrect manual problem initially worsened between October 2021 and March 2022 due to increased surveillance leading to more incorrect manuals being detected. The rate improved by August 2022 and remained high through March of 2023. Reducing the difficulty of finding implant vendor manuals by providing a list of links to vendor manual repositories along with guidance to pull the most recent manual version is an effective strategy to improve data integrity in MR safety workflows.

Optimal power management of a stand-alone hybrid energy management system: Hydro-photovoltaic-fuel cell

The field of electrical engineering with renewable energy systems has witnessed a remarkable improvement due to an increase in the world's growing population as available resources become limited. This study proposes an optimal and efficient hybrid energy management system that combines photovoltaic, hydro, and fuel cell renewable energy resources that can solve the drawbacks of current energy setups and offer a dependable power source for stand-alone purposes. This novel AC-linked hybrid energy system features a comprehensive power management strategy with actual weather data and a realistic load demand profile. The HOMER Pro technique is employed for calculating the emission of toxic gases, system economic benefits, sensitivity analysis and cost minimization of the system while providing sustainability. The numerical outcomes show optimal results as compared to the existing systems in the literature. The system consists of 55 kW of PV modules, a 30 kW FC generator, and 40 kW of hydropower, suggesting optimal and excellent economic and environmental sustainability. This system appeared to be an especially cost-effective solution, with a net present cost (NPC) of $248,773 and a cost of energy (COE) of $0.0546/kWh. The results show that the system can meet energy needs while utilising the available resources efficiently in different weather conditions. The proposed system has the potential to increase the sustainability and dependability of power generation in a variety of applications and aid in the design and implementation of alternative energy systems, particularly in off-grid or remote areas. The proposed system can be extended to other such locations that will provide a scalable and flexible solution for electricity generation, making it suitable for a variety of applications, from small rural power plants to large industrial power supplies. Overall, the proposed study provides an important resource for development in hybrid energy system design and operation, with far-reaching implications for the transition to a sustainable and low-carbon future.

Effective rare-earth dielectric addition and gamma ray irradiation for achieving highly efficient PDMS triboelectric nanogenerator

This research aims to develop the flexible triboelectric nanogenerator (TENG) using PDMS polymer as the main tribo-material and composite with dielectric rare earth oxide, lanthanum chromite compound; LaCrO3, to enhance generated charge density, before add-on its higher electrical output with gamma ray irradiation. Upon study the effect of different amounts of the loaded LaCrO3 and various doses of gamma ray, the optimum condition can be obtained. The PDMS/LaCrO3 at 5 wt% can reach open-circuit voltage (VOC) and shot-circuit current (ISC) at 89 V and 448 μA. The impressive results of output further appear by additional irradiated gamma radiation. At 150 kGy dose of Irradiated gamma ray, VOC and ISC can jump to 161 V and 963 μA. These output signals, especially ISC, can be ∼34 times higher than that of the pristine PDMS. Scientific discussion regarding characterization, operating mechanism, dielectric properties and electrical output is provided. The practical application of being a small power source is also developed. Therefore, this research can show another useful application of gamma ray in the field of materials design for energy harvesting devices. The knowledge provided in this research can also serve as potential guidance in the field of specific TENG utilization.