So-called 3D Research Articles

(Invited) Metrology Along the Gate-All-Around Logic Roadmap: From Nanosheet to Complementary Field-Effect Transistors

For over 50 years, improving the functionality per unit area has been the driving force of the semiconductor industry. Since the advent of fin field effect transistors (FETs), however, this has come at the expense of an increasingly complex device architecture. This is particularly true today as the industry is transitioning from finFETs to nanosheet (NSH) FETs. The integration of the latter devices indeed introduces the use e.g. of a modified substrate with an epitaxial SiGe/Si superlattice, of lateral etching and of size-constrained and buried gate stacks. Novel metrology concepts are therefore required to control all these new processing steps.This presentation will start by reviewing the metrology challenges encountered along the different steps of the gate-all-around (GAA) logic roadmap, from NSH to Complementary FET (CFET) [1-3]. As will be shown, the sought information moves from the surface to increasingly deeper regions of the device. This is leading to the need for so-called 3D metrology techniques focusing on buried features [4]. We will then dive into the 3D metrology solution space and demonstrate the concrete use of some of these techniques for GAA logic metrology. We conclude that, although many capabilities remain to be demonstrated, the solution space is vast such that GAA logic metrology is not expected to suffer from a capability gap. However, we foresee a heavier resort to slower solutions, which is likely to lead to a throughput or capacity gap. Luc van den Hove, The endless progression of Moore's law, Proceeding of SPIE Advanced Lithography + Patterning, PC1205301 (2022) Liao, Complementary Field-Effect Transistor (CFET) Demonstration at 48nm Gate Pitch for Future Logic Technology Scaling, IEDM 2023 M. Radosavljević et al., Demonstration of a Stacked CMOS Inverter at 60nm Gate Pitch with Power Via and Direct Backside Device Contacts, IEDM 2023J. Bogdanowicz et al., Semiconductor metrology for the 3D era, Proc. SPIE 12496, Metrology, Inspection, and Process Control XXXVII, 1249617

Strategic Directions for Strengthening Sustainability of Forestry Workforce

Today in many countries and regions, forestry sector deals with a considerable shortage of forestry workers and faces the serious challenge of ensuring a qualified and sustainable workforce. Current global processes and structural changes, such as emigration from rural areas, aging of the population, unfavorable age structure of existing employees, negative demographic trends (migrations, decline in birth rate, negative natural increase, etc.), lack of interest in the so-called 3D (dirty, dangerous and demeaning) jobs, low cost of labor and others, significantly contribute to such an adverse situation. Additionally, forestry work, especially wood harvesting, represents a very risky, professionally highly demanding and physically extremely intensive activity, which is regularly classified as one of the most dangerous occupations with a high proportion of serious injuries, fatalities and occupational diseases. For these reasons, the forestry profession is considered unattractive, and the job of a forestry worker undesirable. All of this makes finding the people interested in these jobs very difficult, and the task of ensuring the necessary workforce for all regular activities in sustainable forest management becomes very hard. In this paper, based on the surveys carried out in the Federation of Bosnia and Herzegovina (FB&H), i.e. evaluation of forestry workforce sustainability factors, and on the study of available strategic documents, policies and case studies, strategic directions aimed at strengthening the sustainability of forestry workforce were elaborated. The sustainability factors were observed in three categories related to: a) stronger recruiting in forestry, b) more successful retention of forestry workers, and c) higher work commitment of forestry workers. Established rankings, together with other findings, were used to define four separate strategic directions: (1) Direct financial strategy, which emphasizes direct monetary payments to workers and is oriented towards labor productivity, (2) Indirect financial strategy, which focuses more on providing indirect material gains to workers and the quality of performed work, (3) Educational strategy, aimed at the education and training of workers, and (4) Technical-technological strategy, aimed at increasing the mechanization in forest operations thus reducing the demand for labor. The paper elaborates the basic starting points and main characteristics (priorities, measures and activities, stakeholders, responsible authorities, etc.) of each strategic direction considering the possibility and conditions of their implementation in national forestry sector. The objective of the paper is to raise the required awareness of the forestry workforce issues, its position and status, and also to provide foundations for enhancing the attractiveness of forestry work and improving the overall sustainability of the forestry workforce. The results of the study point out the critical issues and provide valuable insights that can help in formulating effective policies and strategies for the future.

The Use of 3D Printed Sand Molds and Cores in the Castings Production

As a part of this work, an analysis of the current state of knowledge regarding the use of additive technology - binder jetting in the production of castings was made. The binder jetting (so-called 3D printing) has become the leading method of sand mold and core production. Within this paper types of molding and core sands with organic and inorganic binders that are and can be used in technology were analyzed. The need to carry out works aimed at developing pro-ecological molding / core sands with inorganic binders and organic binders with reduced harmfulness to the environment dedicated to binder jetting technology was noticed. The influence of technology parameters on the properties of molding / core sands and the properties of cast components was analyzed. It was shown that thanks to the unlimited shapes of the systems obtained with the use of additive technologies, it is possible to influence the rate of heat dissipation through the mold, which positively effects the process of solidification and crystallization of the castings.

The gamma-ray bursts fundamental plane correlation as a cosmological tool

ABSTRACT Cosmological models and their corresponding parameters are widely debated because of the current discrepancy between the results of the Hubble constant, H0, obtained by SNe Ia, and the Planck data from the cosmic microwave background radiation. Thus, considering high redshift probes like gamma-ray bursts (GRBs) is a necessary step. However, using GRB correlations between their physical features to infer cosmological parameters is difficult because GRB luminosities span several orders of magnitude. In our work, we use a three-dimensional relation between the peak prompt luminosity, the rest-frame time at the end of the X-ray plateau, and its corresponding luminosity in X-rays: the so-called 3D Dainotti fundamental plane relation. We correct this relation by considering the selection and evolutionary effects with a reliable statistical method, obtaining a lower central value for the intrinsic scatter, σint = 0.18 ± 0.07 (47.1 per cent) compared to previous results, when we adopt a particular set of GRBs with well-defined morphological features, called the platinum sample. We have used the GRB fundamental plane relation alone with both Gaussian and uniform priors on cosmological parameters and in combination with SNe Ia and BAO measurements to infer cosmological parameters like H0, the matter density in the universe (ΩM), and the dark energy parameter w for a wCDM model. Our results are consistent with the parameters given by the Lambda cold dark matter model but with the advantage of using cosmological probes detected up to z = 5, much larger than the one observed for the furthest SNe Ia.

Hyperspectral three-dimensional absorption imaging using snapshot optical tomography.

Hyperspectral imaging (HSI) records a series of two-dimensional (2D) images for different wavelengths to provide the chemical fingerprint at each pixel. Combining HSI with a tomographic data acquisition method, we can obtain the chemical fingerprint of a sample at each point in three-dimensional (3D) space. The so-called 3D HSI typically suffers from low imaging throughput due to the requirement of scanning the wavelength and rotating the beam or sample. In this paper we present an optical system which captures the entire four-dimensional (4D), i.e., 3D structure and 1D spectrum, dataset of a sample with the same throughput of conventional HSI systems. Our system works by combining snapshot projection optical tomography (SPOT) which collects multiple projection images with a single snapshot, and Fourier-transform spectroscopy (FTS) which results in superior spectral resolution by collecting and processing a series of interferogram images. Using this hyperspectral SPOT system we imaged the volumetric absorbance of dyed polystyrene microbeads, oxygenated red blood cells (RBCs), and deoxygenated RBCs. The 4D optical system demonstrated in this paper provides a tool for high-throughput chemical imaging of complex microscopic specimens.

MAKING 3D MODEL-BASED APPROVAL A REALITY

In recent years, various classification societies and shipbuilders have conducted R&D activities on the use of 3D models created during the design phase for approval (so-called 3D Model-Based Approval, hereafter “3DMBA”). 3DMBA is an attractive concept that could bring digital transformation to the ship design process, but it also poses significant practical challenges. In particular, there is an issue with the division of design work and information in structural design, which requires the use of different software applications for different tasks such as 3D modeling, rule calculation, direct strength calculation, and 2D drawing. This causes a situation whereby each time a design change happens, it becomes necessary to modify the data in each software application, resulting in frequent duplication of work. This is also an error-prone process, because of possible discrepancies between various types of information in each application. The introduction of 3DMBA under such circumstances would further increase the workload of shipyards, as they would have to repeat this duplication of work on each software application to complete a precise 3D model. The authors have been conducting a project to realize an efficient 3DMBA process, and they concluded at ICCAS2019 that the key to achieving 3DMBA is to integrate the engineering process for rule and direct strength calculations into 3D CAD, and to implement viewer functions for efficient plan approval to enable shipyards to easily create 3D approval models. This paper presents the latest achievements and future prospects of the project.

The Optical Two- and Three-dimensional Fundamental Plane Correlations for Nearly 180 Gamma-Ray Burst Afterglows with Swift/UVOT, RATIR, and the Subaru Telescope

Gamma-ray bursts (GRBs) are fascinating events due to their panchromatic nature. We study optical plateaus in GRB afterglows via an extended search into archival data. We comprehensively analyze all published GRBs with known redshifts and optical plateaus observed by many ground-based telescopes (e.g., Subaru Telescope, RATIR) around the world and several space-based observatories such as the Neil Gehrels Swift Observatory. We fit 500 optical light curves, showing the existence of the plateau in 179 cases. This sample is 75% larger than the previous one, and it is the largest compilation so far of optical plateaus. We discover the 3D fundamental plane relation at optical wavelengths using this sample. This correlation is between the rest-frame time at the end of the plateau emission, , its optical luminosity, L opt, and the peak in the optical prompt emission, L peak,opt, thus resembling the three-dimensional (3D) X-ray fundamental plane (the so-called 3D Dainotti relation). We correct our sample for redshift evolution and selection effects, discovering that this correlation is indeed intrinsic to GRB physics. We investigate the rest-frame end-time distributions in X-rays and optical (, ), and conclude that the plateau is achromatic only when selection biases are not considered. We also investigate if the 3D optical correlation may be a new discriminant between optical GRB classes and find that there is no significant separation between the classes compared to the Gold sample plane after correcting for evolution.

Extending depolarized DLS measurements to turbid samples

The application of dynamic light scattering to soft matter systems has strongly profited from advanced approaches such as the so-called modulated 3D cross correlation technique (Mod3D-DLS) that suppress contributions from multiple scattering, and can therefore be used for the characterization of turbid samples. Here we now extend the possibilities of this technique to allow for depolarized light scattering (Mod3D-DDLS) and thus obtain information on both translational and rotational diffusion, which is important for the characterization of anisotropic particles. We describe the required optical design and test the performance of the approach for increasingly turbid samples using well defined anisotropic colloidal models systems. Our measurements demonstrate that 3D-DDLS experiments can be performed successfully for samples with a reduced transmission due to multiple scattering as low as 1%. We compare the results from this approach with those obtained by standard DDLS experiments, and point out the importance of using an appropriate optical design when performing depolarized dynamic light scattering experiments with turbid systems.

3D printed spinning cup-shaped device for immunoaffinity solid-phase extraction of diclofenac in wastewaters

This article reports current research efforts towards designing bespoke microscale extraction approaches exploiting the versatility of 3D printing for fast prototyping of novel geometries of sorptive devices. This is demonstrated via the so-called 3D printed spinning cup-based platform for immunoextraction of emerging contaminants using diclofenac as a model analyte. A new format of rotating cylindrical scaffold (containing a semispherical upper cavity) with enhanced coverage of biorecognition elements, and providing elevated enhancement factors with no need of eluate processing as compared with other microextraction stirring units is proposed. Two distinct synthetic routes capitalized upon modification of the acrylate surface of stereolithographic 3D printed parts with hexamethylenediamine or branched polyethyleneimine chemistries were assayed for covalent binding of monoclonal diclofenac antibody.Under the optimized experimental conditions, a LOD of 108 ng L−1 diclofenac, dynamic linear range of 0.4–1,500 µg L–1, and enrichment factors > 83 (for near-exhaustive extraction) were obtained using liquid chromatography coupled with UV–Vis detection. The feasibility of the antibody-laden device for handling of complex samples was demonstrated with the analysis of raw influent wastewaters with relative recoveries ranging from 102 to 109%. By exploiting stereolithographic 3D printing, up to 36 midget devices were fabricated in a single run with an estimated cost of mere 0.68 euros per 3D print and up to 16 €/device after the incorporation of the monoclonal antibody.Graphical abstract

Preface

On November 4, 2021, the symposium "Vision and Strategies for Reinforcing Additively Manufactured (AM) Concrete Structures" scientific network "Adaptive Reinforcement of Geometrically Complex Cementitious Shaped Structures" was hosted at the Technical University of Dresden to conclude the funding period. The aim of this network, which is funded by the German Research Foundation (DFG), was to increase the design freedom in the use of cementitious materials through the use of end-to-end digital processes. The complexity of this task was reflected in the group of participants, which included architects and civil engineers as well as computer scientists and materials scientists. In addition to its many positive properties, the cement material, which is important for architecture, has clear weaknesses, particularly in the transmission of tensile forces. Without the addition of reinforcement, the potential of the material is significantly limited. Processing in an automated process such as so-called 3D printing does not initially change this. Regardless of the design, economic and ecological advantages associated with AM processes, the mechanical properties may even deteriorate without the integration of reinforcement. The known reinforcement methods, i.e. the use of rods and mats, usually cannot be integrated into the automated processes. In order to be able to use the mentioned potentials nevertheless, new reinforcement methods have to be developed for this purpose. During the symposium, various approaches, methods and materials were presented, as well as solutions for the complete elimination of reinforcement.

Hybridization three subbands at Dirac point in special designed strained HgTe thin films with structural inversion asymmetry

We study specially designed strained thin HgTe layers with structural inversion asymmetry (SIA) which allow us to distinguish the topological surface states (TSS) typical for a two dimensional (2D) quantum well system in a subband state. To obtain such a dispersion relation on the basis of the eight-band kp model, the theoretical investigation calculations of thin (below 25 nm wide) HgTe strained films with SIA are investigated. The numerical band-gap engineering and dispersion relation allow us to obtain a new class of materials that are characterized by a Dirac-like dispersion and hybridization of the three different charges describing two TSS and one quantum well subband at Γ-point (zero gap). This opens up many possibilities from the applications point of view. An external electric field removed this degeneration and opened a band gap between Γ6, (lh—light hole) and (hh—heavy hole) subbands characteristic for TSS and the subband characteristic for the 2D quantum well state, respectively. The width of the band gap as a function of the external electric field is also considered. Due to consideration being given to the possible applications, analysis of the dispersion relation and Landau levels (LL) energy shape with SIA is also investigated. The possibility of tuning a band gap is promising from the point of view of, for example, THz detectors and emitters. What is very important, the proposed structures allow the avoidance of the coexistence of TSS with bulk states, as very often occurs in so-called 3D strained HgTe-like materials. Analysis of the wave function as a function of the width of the investigated structure as well as the external electric field is also presented. Due to the strong correlation between both states (2D and TSS), and their very well known properties, we expect that such HgTe films can be used as optical active layers in the THz region.

Oyster Cultivation Betting on Foreign Workers: A Study of Indonesian Workers in Hiroshima

One of the reasons foreign workers are looking for jobs abroad is that there are not enough jobs in their home countries. Indonesia is one of the countries that send migrant workers to more developed Asian and Middle Eastern countries. The increasingly rapid flow of globalization in the world goes together with the need for new workers to fill the industry, especially in Japan. This condition has forced Japan to open doors for foreign workers from developing countries to satisfy demand. These workers usually come from developing countries, such as Indonesia, Vietnam, China, the Philippines, and others. In general, they occupy the less desirable working positions over Japanese youth, the so-called 3D work (dirty, dangerous, and demanding). Therefore, the current dynamics of these migrant workers' life in Japan becomes an exciting subject to comprehend, especially for the Indonesian migrant workers. This study aims to determine the dynamics of Indonesian worker's life while working in the Japanese fisheries sector. In particular, the study looks at those who work in oyster cultivation in Hiroshima prefecture. This research was carried out using descriptive analysis methods and field study with in-depth interviews conducted from 2016-2018. The interviews performed in this study were structured to find answers for the following questions: What problems do the workers face while living in Japan? What kind of processes did they go through before coming to Japan? While working in the Japanese fishing industry, how was their life as a Muslim minority?

Oyster Cultivation Betting on Foreign Workers: A Study of Indonesian Workers in Hiroshima

One of the reasons foreign workers are looking for jobs abroad is that there are not enough jobs in their home countries. Indonesia is one of the countries that send migrant workers to more developed Asian and Middle Eastern countries. The increasingly rapid flow of globalization in the world goes together with the need for new workers to fill the industry, especially in Japan. This condition has forced Japan to open doors for foreign workers from developing countries to satisfy demand. These workers usually come from developing countries, such as Indonesia, Vietnam, China, the Philippines, and others. In general, they occupy the less desirable working positions over Japanese youth, the so-called 3D work (dirty, dangerous, and demanding). Therefore, the current dynamics of these migrant workers' life in Japan becomes an exciting subject to comprehend, especially for the Indonesian migrant workers. This study aims to determine the dynamics of Indonesian worker's life while working in the Japanese fisheries sector. In particular, the study looks at those who work in oyster cultivation in Hiroshima prefecture. This research was carried out using descriptive analysis methods and field study with in-depth interviews conducted from 2016-2018. The interviews performed in this study were structured to find answers for the following questions: What problems do the workers face while living in Japan? What kind of processes did they go through before coming to Japan? While working in the Japanese fishing industry, how was their life as a Muslim minority?

A Method to Optimize 3D Microbatteries

The rapid development of information technology (IT) since the end of the 20th century and the technological progress of sensors and devices have familiarized the concept of the Internet of Things (IoT). So far, the miniaturization of the sensors and devices has significantly contributed to the rapid growth of the IoT ecosystem. However, compared with such technological progress on the sensors and devices, the miniaturization technology of the power sources for the off-grid operation of the electronics has not been well established, which hinders further prevalence of the IoT. Especially, for the integration with microelectronics, the high areal energy density is recognized as one of the key properties for such power sources.As one of the promising candidates for such IoT-enabled power sources, lithium-ion microbatteries have attracted attention. Especially, the three-dimensional design of the microbattery at full cell level has been investigated in order to improve the areal energy density while maintaining high power density. The benefit of the geometrical modification is the lowering of the internal resistance due to the reduction of the ion transport distance without reducing the battery capacity. Indeed, the recent advancement of a variety of 3D manufacturing technologies has allowed the realization of the 3D microbattery. However, the 3D electrode structure is limited to simple shapes such as interdigitated plate or cylindrical electrodes and, therefore, the battery performance is restricted by such electrode shapes. To design the 3D battery architecture beyond the interdigitated configuration, the 3D battery optimization method at the full cell level is vital. Also, the 3D battery optimization method is crucial from the point of view of industrial demand since there are a variety of IoT devices that have different functions, and it is demanding to optimize the battery following the requirements of each IoT device by hand. However, there are no reports regarding the 3D battery optimization methods at the full cell level.In this talk, we propose a novel battery optimization system at the full cell level, which consists of an automatic geometry generator and performance simulators. The geometry generator designs the full cell based on the random sampling by only receiving the size and the resolution of the 3D battery cell as the input data. For compatibility with the geometry generator, as one of the performance simulators, we newly propose the transmission line model, the so-called 3D porous electrode model, to compute the internal resistance of the 3D battery quickly. To demonstrate the effectiveness of our approach, the tradeoff frontier for the internal resistance and capacitance is created by plotting 200,000 data points as shown in Fig. 1 (a). From the figure, we successfully find new battery geometry (Geometry D in Fig. 1 (b)), which has both higher power and energy densities than the interdigitated plate configuration (Geometry C in Fig. 1 (b)). Figure 1

Overview of the use of 3D printing in forensic medicine

AbstractIn forensic medicine the use of so-called 3D printing is a niche application, whereas developments elsewhere in this field are rapidly advancing worldwide. The most common and widespread technology is fusion deposit modelling with polylactic acids (PLA). Although the equipment and materials may be relatively inexpensive and 3D printing relatively fast, the resulting end products tend to also have negative properties, such as poor durability and mechanical anisotropy, which may be an issue depending on the application. In forensic medicine, applications in the field of weapons technology and biomechanical models are realistic and 3D printing is already being used for demonstrations at court hearings and in teaching and also as a technique for building spare parts or accessories. Having a low-cost option for rapid prototyping on-site is particularly useful for the development phase. For finished 3D designs more expensive manufacturing options with a choice of materials with significantly broader mechanical or thermal properties are available. As the technology is undergoing major changes, one should carefully consider whether to enter the field oneself, buy own hardware, use a 3D printing service or seek cooperation possibly with a nearby partner.

3D-Microbattery Architectural Design Optimization Using Automatic Geometry Generator and Transmission-Line Model.

SummaryOptimization of the 3D battery architecture is crucial to improve the performance of microbatteries. However, such optimization is difficult and time consuming by hand for even experts. In this article, we propose a battery optimization system, which consists of an automatic geometry generator and performance simulators. The geometry generator creates feasible 3D batteries without using any human intuition and experience for the spatial arrangement of positive and negative electrodes. For quick evaluation of the internal resistance, which relates power and energy densities, we propose the transmission line model, the so-called 3D porous electrode model, as one of the performance simulators. To show the effectiveness of the optimization system, we designed the lithium-ion microbatteries. In the trade-off frontier for the internal resistance and the capacity, we successfully found a new battery architecture that has higher power and energy densities over the conventional interdigitated plates configuration.

3D printed silicone platforms with laser-scattering protein detection under flow analysis conditions as a development of Silicone Optical Technology (SOT)

ABSTRACT In this work, the 3D printed silicone microfluidic systems with simultaneous laser-scattering detection for turbidimetric and nephelometric measurements are presented. As a model reaction, the Exton method for total protein determination has been chosen as the well-known analytical protocol. Presented research is a development of recently presented idea of Silicone Optical Technology (SOT). It can be considered as the next step for all-in-one 3D printed analytical system concept, which means that microfluidic platform as well as detection system parts can be constructed during one-step manufacturing process. During the investigations, three microfluidic platforms with different flow-mixing patterns were designed and optimized for flow rate and sample injection volume. The most promising system with so-called 3D mixing (mixing channel along three axes) was characterized by analytical parameters sufficient for total protein analysis: limit of detection of 3 mg/L, linearity in the range of 16 – 400 mg/L and 50 µL sample consumption. The analytical usefulness of developed microfluidic platform was proved by analysis of urine samples. Furthermore, the design and setting up of double detection system based on Arduino microcontroller have been discussed.

Transparent Pressure Sensor with High Linearity over a Wide Pressure Range for 3D Touch Screen Applications.

The demand for display technology is expected to increase with the continuous spread of portable electronics and with the expected emergence of flexible, wearable, and transparent display devices. A touch screen is a critical component in display technology that enables user interface operations, and the future generation of touch screens, the so-called 3D touch screens, is expected to be able to detect multiple levels of pressure. To enable 3D touch screens, transparent pressure sensors with high linearity over a working range that encompasses the pressure range of human touch (10-100 kPa) are required. In this work, a transparent and linear capacitive pressure sensor is reported with a transmittance over 85% and high linearity (R2 = 0.995) over 5-100 kPa of pressure. To render the sensor transparent, a microstructured "hard" elastomer layer was filled in with a refractive index matching a "soft" elastomer layer, through which light scattering was minimized. High linearity was attained from the sensor's unique architecture that increases the effective area of the capacitor with applied pressure. These attributes render our sensor highly suitable for future 3D touch screen applications.

Injection 3D Concrete Printing (I3DCP): Basic Principles and Case Studies

Today, the majority of research in 3D concrete printing focuses on one of the three methods: firstly, material extrusion; secondly, particle-bed binding; and thirdly, material jetting. Common to all these technologies is that the material is applied in horizontal layers. In this paper, a novel 3D concrete printing technology is presented which challenges this principle: the so-called Injection 3D Concrete Printing (I3DCP) technology is based on the concept that a fluid material (M1) is robotically injected into a material (M2) with specific rheological properties, causing material M1 to maintain a stable position within material M2. Different to the layered deposition of horizontal strands, intricate concrete structures can be created through printing spatially free trajectories, that are unconstrained by gravitational forces during printing. In this paper, three versions of this method were investigated, described, and evaluated for their potential in construction: A) injecting a fine grain concrete into a non-hardening suspension; B) injecting a non-hardening suspension into a fine grain concrete; and C) injecting a fine grain concrete with specific properties into a fine grain concrete with different properties. In an interdisciplinary research approach, various material combinations were developed and validated through physical experiments. For each of the three versions, first architectural applications were developed and functional prototypes were fabricated. These initial results confirmed both the technological and economic feasibility of the I3DCP process, and demonstrate the potential to further expand the scope of this novel technology.

Hague convention on the civil aspects of international child abduction: content and methodological approaches to the application in judicial education

The article is focused on the most essential issues of the application of the Hague Convention on the Civil Aspects of International Child Abduction of 25 October 1980 (“the Hague Convention”) in the judgements of Ukrainian courts and some methodological aspects of workshop development on the topic. The Hague Convention recently has been applied more often as an important international act. Moreover, there are at least 3 judgements of the European Court of Human Rights v. Ukraine on the matter (Chabrowski v. Ukraine, no. 61680/10, 17 January 2013; Vilenchik v. Ukraine, no. 21267/14, 3 October 2017, M.R. and D.R. v. Ukraine, no. 63551/13, 22 May 2018). The Court reiterates that in the area of international child abduction, the obligations that Article 8 of the ECHR imposes on the Contracting State must be interpreted, in particular, in the light of the Hague Convention on the Civil Aspects of International Child Abduction of 25 October 1980 which also attaches paramount importance to the best interests of the child. Therefore such a topic was selected for a workshop to be developed and implemented in the educational process of the National School of Judges of Ukraine (NSJU). According to the Concept of National Standards of Judicial Training, which was approved by the Science and Methodology Council of the NSJU, and later became a part of the Rules of Procedure of the NSJU, all training courses for judges and candidates are developed taking into consideration three dimensions – so-called 3D (dimension) – which encompass knowledge, skills, and values. Therefore the workshop on the Hague Convention is designed using all 3D, and is aimed to consolidate knowledge and to develop judicial skills in application of the Hague Convention, Article 8 of the Convention for the Protection of Human Rights and Fundamental Freedoms (ECHR) and ECtHR case law as well as to contribute to strengthening of the values of respect for human rights, rule of law, and enforcement of Ukraine’s international obligations. In order to achieve these goals, there certain tools and techniques that are effective in basic courses on the ECtHR case-law were used. In particular, the use of interactive adult learning methods – mini lectures, filling the analytical framework, video review, express survey etc. The development of the workshops took place jointly with a scientific research in this field, specifically focused of the new Supreme Court jurisprudence, the best practices and lessons learned. The results of the research has been used for the workshop development with the help of the modern innovative tools. Key words: Hague Convention of 25 October 1980 (Convention of Abduction), international child abduction, place of ordinary residence, Article 8 of the ECHR, practice of the ECHR, judicial education, methodological support, workshop.