Article
Computer Science, Software Engineering
Guillaume Damiand, Vincent Nivoliers
Summary: A generic framework is proposed to describe modifications on 3D objects based on a query and replace mechanism. The framework uses rewriting rules and 3D combinatorial maps to implement various transformations, and utilizes topological signatures for efficient matching. It not only provides a simple implementation for operations, but also detects necessary corner cases to ensure the topological correctness of the output.
COMPUTERS & GRAPHICS-UK
(2022)
Review
Chemistry, Multidisciplinary
Zhao Cheng, Rui Cao, Kangkang Wei, Yuhan Yao, Xinyu Liu, Jianlong Kang, Jianji Dong, Zhe Shi, Han Zhang, Xinliang Zhang
Summary: 2D materials, such as graphene, black phosphorous, and transition metal dichalcogenides, have unique properties for optoelectronics and can greatly enhance the performance of silicon photonic devices. By optimizing the structures of photonic devices based on 2D materials, such as photonic crystal waveguides, slot waveguides, and microring resonators, the light-matter interactions can be further improved, providing a powerful design for silicon photonic integrated circuits.
Article
Chemistry, Multidisciplinary
Matthew G. Boebinger, Courtney Brea, Li-Ping Ding, Sudhajit Misra, Olugbenga Olunloyo, Yiling Yu, Kai Xiao, Andrew R. Lupini, Feng Ding, Guoxiang Hu, Panchapakesan Ganesh, Stephen Jesse, Raymond R. Unocic
Summary: An automated and feedback-controlled atomic fabrication method is developed to create 1D-2D heterostructures in MoS2 with atomic precision. The shape and symmetry of the scanning pathway can be controlled using an aberration-corrected scanning transmission electron microscope. Density functional theory calculations and ab initio molecular dynamic simulations are used to study the energetic barriers for atomic edge structures and transformation pathways. This work provides an automated method for understanding atomic-scale transformations and enables more precise atomic-scale engineering of materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jonas Haas, Finn Ulrich, Christoph Hofer, Xiao Wang, Kai Braun, Jannik C. Meyer
Summary: Researchers have successfully stacked individual layers of two-dimensional materials using van der Waals interaction and modified them using electron irradiation and etching techniques to achieve precise control and assembly of structures. The process allows for accurate alignment and stacking of layers under electron microscopy, enabling the fabrication of almost any three-dimensional structure with high spatial resolution.
Article
Multidisciplinary Sciences
Zhaoguo Xue, Tianqi Jin, Shiwei Xu, Ke Bai, Qi He, Fan Zhang, Xu Cheng, Ziyao Ji, Wenbo Pang, Zhangming Shen, Honglie Song, Yumeng Shuai, Yihui Zhang
Summary: In this article, an ordered assembly strategy is introduced to transform 2D thin films into complex 3D structures on various curved surfaces using predefined mechanical loadings and prestretch techniques. The experimental results demonstrate the effectiveness of this method on different curved substrates, and the assembly structures can be accurately captured by mechanics modeling.
Article
Materials Science, Multidisciplinary
Tim Hsu, William K. Epting, Hokon Kim, Harry W. Abernathy, Gregory A. Hackett, Anthony D. Rollett, Paul A. Salvador, Elizabeth A. Holm
Summary: By utilizing a generative adversarial network (GAN) framework to learn and generate 3D microstructures of solid oxide fuel cell electrodes, the results show that the generated microstructures closely match the original ones and exhibit similar performance in electrochemical simulations.
Article
Chemistry, Inorganic & Nuclear
Chaozhuang Xue, Jian Lin, Yifan Zhang, Zhiyang Liu, Rui Li, Shuwen Gong, Konggang Qu
Summary: The construction of cluster-based crystalline chalcogenide structures through the solvothermal method involves the control of precursors, template cations, and auxiliary solvents. Metal precursors determine the cluster size, while organic templates and auxiliary solvents influence the cluster type and framework architecture. This study reveals the role of auxiliary solvents in the synthesis of new In-Se compounds with different dimensions, demonstrating the importance of diversifying the chalcogenide family.
DALTON TRANSACTIONS
(2022)
Review
Materials Science, Multidisciplinary
Jingshu Zhou, Kaiyao Xin, Xiangkai Zhao, Dongmei Li, Zhongming Wei, Jianbai Xia
Summary: The article summarizes the basic properties of several 2D materials used in photodetectors, reviews the progress in silicon photonic integrated photo-detectors based on 2D materials, and discusses the combination of some other traditional and 2D devices.
SCIENCE CHINA-MATERIALS
(2022)
Article
Multidisciplinary Sciences
Siraj Sidhik, Yafei Wang, Michael De Siena, Reza Asadpour, Andrew J. Torma, Tanguy Terlier, Kevin Ho, Wenbin Li, Anand B. Puthirath, Xinting Shuai, Ayush Agrawal, Boubacar Traore, Matthew Jones, Rajiv Giridharagopal, Pulickel M. Ajayan, Joseph Strzalka, David S. Ginger, Claudine Katan, Muhammad Ashraful Alam, Jacky Even, Mercouri G. Kanatzidis, Aditya D. Mohite
Summary: Realizing solution-processed heterostructures in halide perovskites is a long-standing challenge due to solvent incompatibilities. However, by utilizing the solvent dielectric constant and Gutmann donor number, it is possible to grow phase-pure two-dimensional (2D) halide perovskite stacks with desired composition, thickness, and bandgap onto 3D perovskites without dissolving the underlying substrate. The thickness dependence of the 2D perovskite layer shows expected trends for different device architectures, indicating the influence of band alignment and carrier transport limits.
Article
Computer Science, Artificial Intelligence
Xiaoxia Xing, Yinghao Cai, Tao Lu, Yiping Yang, Dayong Wen
Summary: The paper introduces 3DTDesc, a data-driven descriptor that combines 2D texture and 3D geometric information for frame registration. The proposed descriptor is learned directly from color point clouds, providing efficient and robust geometric feature matching. Multi-scale 3DTDesc is also proposed to further enhance the feature matching performance, as demonstrated by extensive experimental results on challenging RGB-D datasets.
MACHINE VISION AND APPLICATIONS
(2021)
Article
Materials Science, Ceramics
P. S. Grinchuk, M. V. Kiyashko, H. M. Abuhimd, M. S. Alshahrani, D. V. Solovei, M. O. Stepkin, A. V. Akulich, M. D. Shashkov, T. A. Kuznetsova, S. M. Danilova-Tretiak, L. E. Evseeva, K. V. Nikolaeva
Summary: By controlling the number of impregnation stages, it is possible to adjust the SiC content and properties of reaction-bonded SiC ceramics, enhancing thermal conductivity and Young's modulus to levels superior to most reaction-bonded SiC materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Ran Guo, Liping Qi, Liang Xu, Lingpeng Liu, Lei Sun, Zhifu Yin, Kehong Li, Helin Zou
Summary: Nano-imprint technology is a method of reproducing nano-patterns with high resolution, high throughput, and low cost. The quality of the mold is crucial, and a new method for fabricating silicon nano-molds has shown potential for high-precision and large-scale production of nano devices.
Article
Chemistry, Physical
Li Shen, Qing Zhang, Juan Luo, Hong Chuan Fu, Xiao Hui Chen, Li Li Wu, Hong Qun Luo, Nian Bing Li
Summary: The study presents a novel design strategy for PBA catalysts that can efficiently achieve high-performance hydrogen and oxygen evolution reactions for water splitting. By assembling hierarchical PBA structures and controlling the temperature and precursor concentration during hydrothermal reactions, catalysts with outstanding catalytic performance, such as PBA@MnO2 and N-FeMnNi materials, were obtained.
APPLIED SURFACE SCIENCE
(2021)
Article
Energy & Fuels
Muhammad Younas, Mohammed A. Gondal, Mohamed A. Dastageer
Summary: This study focuses on growing single crystals of 2D/3D-blended perovskite, aiming to enhance carrier mobility while reducing grain boundaries, trap state densities, and charge recombination, all while improving material stability. Solar cells made using polycrystalline 3D perovskite, single crystal of 3D perovskite, and single crystal of 2D/3D-blended perovskite showed efficiencies of 4.55%, 6.37% and 5.37% respectively.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Pengrong Lv, Yuxin You, Junyu Li, Yang Zhang, Dirk J. Broer, Jiawen Chen, Guofu Zhou, Wei Zhao, Danqing Liu
Summary: The paper presents a method based on molecular self-assembling of liquid crystal polymers to directly translate 2D molecular director profiles into 3D topographies without multi-step lithographic processes. By activating LCPs through an electric field, surface deformation can occur to induce topographies governed by the director profile. The approach opens new opportunities for optical and electrical applications.
Article
Biophysics
Jennifer K. Vanos, Konrad Rykaczewski, Ariane Middel, Daniel J. Vecellio, Robert D. Brown, Terry J. Gillespie
Summary: The study found errors in estimating MRT using low-cost sensor models, but significant improvements in performance can be achieved by applying new average surface temperature correction factors. Through the research, three simple correction equations were provided for future use in research under warm-hot and clear conditions.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2021)
Article
Construction & Building Technology
Konrad Rykaczewski, Jennifer K. Vanos, Ariane Middel
Summary: This study develops anisotropic radiation source models for thermal manikin simulations, which can realistically simulate the effects of built environments on human radiation using spectral and spatial resolution methods.
BUILDING AND ENVIRONMENT
(2022)
Article
Nanoscience & Nanotechnology
Siby Thomas, Owen Hildreth, Mohsen Asle Zaeem
Summary: The effects of vacancy defects on the formation energies, mechanical stability, electronic properties, and diffusion coefficients in copper (I) iodide (CuI) are investigated. It is found that the vacancy formation energy is temperature-dependent due to the anharmonicity of lattice vibrations at high temperatures. Both Cu and I vacancy defects enhance the electronic conductivity. Cu diffusion is more predominant, regardless of the defect type or temperature.
SCRIPTA MATERIALIA
(2022)
Article
Automation & Control Systems
Stephanie Prochaska, Owen Hildreth
Summary: The study evaluated the effects of hot isostatic pressing (HIP) and surface smoothing on the microstructures, surface roughness, and corrosion response of 3D printed Alloy 625. The results showed that these post-processing methods have minor impacts on the corrosion properties of the alloy, without altering its inherently good corrosion resistance.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Industrial
Stephanie Prochaska, Owen Hildreth
Summary: This study evaluates the effect of a chemically accelerated vibratory finishing technique on the surface polishing and corrosion response of 3D printed metal parts. The results show that the technique improves surface quality and mechanical properties, while also enhancing the corrosion resistance of the processed parts.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Biology
Konrad Rykaczewski, Tanmay Dhanote
Summary: Understanding heat conduction during finger contact with cooler or hotter objects is important for designing electronic devices and setting safety standards. The current experimental approach has limitations and a new simulation method is developed.
JOURNAL OF THERMAL BIOLOGY
(2022)
Article
Engineering, Manufacturing
Sanaz Yazdanparast, Subbarao Raikar, Meredith Heilig, Owen J. Hildreth
Summary: This work presents a simplified post-processing method for metal selective laser melting (SLM) components by utilizing sensitization and etching chemistries. By applying iodine, the surface of copper alloy components can be sensitized and dissolved, allowing for easy removal of internal and external supports and smoothing of surfaces.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Biophysics
Konrad Rykaczewski, Lyle Bartels, Daniel M. Martinez, Shri H. Viswanathan
Summary: Radiation plays a significant role in heat exchange for human body and environment, impacting thermal comfort and safety. This study developed computational manikin models to analyze the impact of radiation, finding that significant relative differences only occur in manikins with BMI above 80th percentile. However, these differences are minimal compared to variations induced by factors like the zenith angle increase.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2022)
Article
Chemistry, Multidisciplinary
Najam Ul Hassan Shah, Shreyas Kanetkar, Aastha Uppal, Michael D. Dickey, Robert Y. Wang, Konrad Rykaczewski
Summary: Gallium-based liquid metals have metallic properties and liquid deformability, making them promising for various applications. Solid additives have been incorporated into the liquid metals to expand their physical and chemical properties, while only a few secondary fluids have been incorporated to create foams or emulsions. This study investigates the fundamental mechanism behind the formation of emulsions in liquid metal foams, demonstrating that emulsions primarily form through the addition of oxide-covered silicone oil capsules to the foam.
Article
Engineering, Manufacturing
Stephanie Prochaska, Michael Walker, Owen Hildreth
Summary: A two-step, self-terminating etching process called STEP has been developed for postprocessing of AM metal parts. This study evaluates the impact of pre-STEP heat treatments on surface roughness and material removal. The results provide insights into the sensitization mechanism of AM L-PBF 316L stainless steel and offer guidance for improving surface roughness and material removal.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Subbarao Raikar, Steven DiGregorio, Milan Agnani, Garrison M. Hommer, Owen J. Hildreth
Summary: This study investigates the impact of a sulfur-based post-processing technique on the mechanical properties and fatigue life of AM Ti64. The results show that this post-processing technique improves the surface finish and fatigue performance of AM Ti64 parts.
ADDITIVE MANUFACTURING
(2023)
Article
Biophysics
Shri H. Viswanathan, Daniel M. Martinez, Lyle Bartels, Sai S. Guddanti, Konrad Rykaczewski
Summary: To predict human thermal comfort and safety, it is necessary to understand the convective heat transfer between the body and its surroundings. This study quantifies the impact of adult human body shape on forced convection, using three-dimensional body meshes of varying heights and body mass indexes. The results show that the impact of body shape on convective heat transfer is minor.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Article
Chemistry, Multidisciplinary
Aastha Uppal, Wilson Kong, Ashish Rana, Jae Sang Lee, Matthew D. Green, Konrad Rykaczewski, Robert Y. Wang
Summary: Polymer matrix composites with liquid metal droplet and solid particle fillers have potential for use in thermal interface materials for electronics thermal management. Achieving good thermal transport requires interconnected filler pathways in the polymer matrix, which can be achieved through displacement of the polymer between fillers and rupture of the oxide shell on the liquid metal droplets. This study demonstrates a strategy utilizing reactive microscale fillers, a polymer matrix with tuned precure viscosity, and mechanical compression during thermal curing to achieve extensive filler bridging and a high thermal conductivity polymer TIM pad.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Steven J. DiGregorio, Michael Martinez-Szewczyk, Subbarao Raikar, Mariana I. Bertoni, Owen J. Hildreth
Summary: This study furthered the research on reactive silver inks (RSI) metallization by investigating the impact of ink formula on consumption, cell performance, and adhesion. A scalable, high-throughput flexible needle contact printing approach was introduced to solve the issues associated with drop-on-demand printing. The best performing ink, consisting of silver acetate, ethylamine, and formic acid, achieved silver fingers with total resistivities of 3.1 mu omega center dot cm and contact resistivities of 3.2 m omega center dot cm2 when printed at 61 degrees C. This ink successfully metallized a full-sized 156 mm x 156 mm SHJ cell, showing that an optimized RSI can achieve similar performances to LT-SP while consuming 80-90% less silver.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Biomedical
Alessandro Valenza, Konrad Rykaczewski, Daniel M. Martinez, Antonino Bianco, Silvia Caggiari, Peter Worsley, Davide Filingeri
Summary: Preliminary human studies suggest that reducing skin temperature can minimize the risk of skin damage. This study demonstrated that skin friction decreases at lower temperatures, which can help protect the skin from mechanical pressure and shear.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
