Article
Chemistry, Physical
Aaron M. M. Day, Jonathan R. R. Dietz, Madison Sutula, Matthew Yeh, Evelyn L. L. Hu
Summary: In this study, we demonstrate the direct laser writing of cavity-integrated spin defects using a nanosecond pulsed above-bandgap laser, allowing real-time monitoring of silicon-monovacancy defect formation within the cavity-mode volume. We observe spin resonance, cavity-integrated photoluminescence, and excited-state lifetimes consistent with conventional methods, without the need for post-irradiation thermal annealing. This localized defect formation method, combined with cavity-integrated defect spins, is crucial for engineering cavity-emitter coupling for quantum networking.
Article
Materials Science, Multidisciplinary
Bin Zhang, Hongliang Liu, Lei Wang, Feng Chen
Summary: The fabrication of various waveguide structures in 4H-SiC crystals using femtosecond laser direct writing was successful. The polarization sensitivity of the waveguides can be modulated by altering the spatial distribution of femtosecond laser-modified areas. The rectangular depressed-cladding waveguide may play an important role in nonlinear frequency conversion, and the crystal network in the waveguide core remains almost undamaged.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
Haichao Xu, Yong Liu, Yuju Che, Zhonghua Chen
Summary: Silicon carbide ceramic matrix composites are widely used in aerospace field for their high temperature resistance, high strength, and corrosion resistance. However, traditional machining methods limit their application in complex shape structure preparation. This study proposes a new strategy combining direct ink writing with reaction bonding to prepare SiCw/SiC complex structures. A water-based slurry consisting of silicon carbide, carbon powder, and silicon carbide whisker was developed. The influence of C and SiCw content in the slurry on the sintering properties of direct-written samples was studied. The results show that the 3D printed SiCw/Si-C composites have great application prospects in the aerospace field.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Stefania Castelletto, Jovan Maksimovic, Tomas Katkus, Takeshi Ohshima, Brett C. Johnson, Saulius Juodkazis
Summary: By using femtosecond laser writing in silicon carbide and gallium nitride, vacancy-related color centers that emit photoluminescence from visible to infrared light can be generated. Large arrays of silicon vacancy defects with high localization within the confocal diffraction limit and minimal material damage can be produced using a 515 nm wavelength 230 fs pulsed laser. This study demonstrates the power-law scaling of the number of color centers formed with laser fabrication energy, indicating that the color centers are created by photoinduced ionization.
Review
Optics
De-Rong Sun, Gong Wang, Yunfei Li, Yu Yu, Chengbin Shen, Yulei Wang, Zhiwei Lua
Summary: This paper investigates the application of laser processing in silicon carbide (SiC). Based on the classification of pulse widths, the removal mechanisms of SiC using nanosecond and ultrafast laser are summarized, and the characteristics of laser-drilled SiC and SiC matrix composites with different pulse scales are analyzed. In addition, drilling is performed using lasers of different pulse widths in a liquid-assisted environment, and the drilling parameters are compared. Finally, laser drilling techniques for SiC and SiC matrix composites are summarized and discussed.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Nanoscience & Nanotechnology
Gwendolyn Jia Hao Lim, Zeshi Yang, Yi Hou, Pon Janani Sugumaran, Zhi Qiao, Jun Ding, Wentao Yan, Yong Yang
Summary: This study demonstrates the well-controlled alignment of silicon carbide nanowires (SiCNW) in a silicone matrix using direct ink writing (DIW)-based 3D printing. The optimized alignment leads to a significant improvement in both reflection loss (RL) and effective attenuation bandwidth (EAB). DIW can play an important role in materials design for high-efficiency microwave attenuation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yingjie Zhang, Zhuo Liu, Fei Guo, Mian Li, Xiangjie Bo
Summary: This study presents the preparation of Fe(x)Mny@NC materials as efficient HER/OER catalysts for water splitting. The optimized Fe3Mn1@NC catalyst exhibited high catalytic activity and stability under alkaline conditions, offering new insights for the development of low-cost water splitting devices in the future.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kazuki Uchiyama, Takashi Yamamoto, Yasuaki Einaga
Summary: Silicon carbide (SiC) has excellent properties but lacks sufficient electrical conductivity for electrochemical applications, leading to the exploration of boron-doped SiC (SiC:B). The electrochemical properties of SiC:B were evaluated and found to have reactivity and sensitivity comparable to that of glassy carbon electrodes.
Article
Optics
Shifei Han, Haijuan Yu, Chaojian He, Shusen Zhao, Chaoyu Ning, Lu Jiang, Xunchun Lin
Summary: This study demonstrates the successful fabrication of silicon carbide wafers using laser cutting technology, which overcomes the issues encountered in diamond wire cutting. By optimizing the processing parameters, the fabricated wafers have a small cutting width and surface roughness, with no residual stress. This technology has important applications in slicing hard and brittle materials and thinning the backsides of semiconductor devices.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Adam B. Peters, Dajie Zhang, Alberto Hernandez, Chuhong Wang, Dennis C. Nagle, Tim Mueller, James B. Spicer
Summary: Selective laser reaction sintering techniques were used to produce near netshape non-oxide ceramics including SiC, Si3N4, and HfC/SiC composites. In-situ reactions during laser processing and layer formation were utilized to produce reaction bonded layers of covalent ceramics. Different precursor materials composed of metal and/or metal oxide powders were converted to non-oxide ceramic layers by simultaneous chemical conversion and local interparticle bonding. The results showed the feasibility of producing near net-shape SiC and SiC composites through single-step additive manufacturing compatible techniques.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Yuliang Zhang, Xiaozhu Xie, Yaoan Huang, Wei Hu, Jiangyou Long
Summary: In this study, a modified layer for SiC slicing was obtained by ultrafast laser processing inside semi-insulating SiC wafers. The effect of pulse duration on the internal modification process and the formation mechanism of the modified layer were investigated. The impact of laser processing parameters on the morphology of the modified layer was systematically studied, and tensile tests were conducted to examine the effect of the modified layer on peeling. The results demonstrate that the increase in pulse duration favors the formation of internal modified structures, and the crack morphology has an essential influence on peeling.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Guangling He, Heng Liu, Xuetao Liu, Yanlin Zhu, Jiamin Xiao, Lei Han
Summary: A feasible strategy was reported to fabricate Cu-doped molybdenum carbide, which optimizes the Mo-H bond strength, increases the electron density around Mo, and facilitates the hydrogen evolution reaction.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Liya Zhou, Xitong Zhou, Congli Zhao, Yihang Liu, Yaoxuan Li, Li Ma, Ying He, Yanjun Jiang, Jing Gao
Summary: Mo2C/NCS, with excellent electron conduction channels and active sites, was used to fabricate AChE biosensors for OPs detection, showing wide linear ranges and outstanding detection limits.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Ceramics
Sai Li, Zhongliang Lu, Haitian Zhang, Zichao Ai, Yang Ran, Yanzhen Li, Xin Deng, Dichen Li
Summary: Polyelectrolyte complexes have been used as rheological modifiers to improve the solid loading and rheological behavior of ceramic ink during direct ink writing (DIW) process. The study investigated the viscoelasticity of SiC inks with different [COOH]:[NHx] molar ratios and analyzed the mechanism of polyionic chains on rheology. The effect of particle size on rheological behavior of SiC ink was also explored to understand the correlation between polyelectrolyte complexes and multi-sized SiC.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Baoli Wang, Yuhao Huang, Yijing Ai, Yucen Yao, Fan Shi, Shiguan Xu, Zejun Zhang, Xianghui Wang, Wei Sun
Summary: This study proposes a facile phosphating-carbonization strategy to synthesize a composite of P-doped Mo2C and N, P-doped carbon nanoribbon network. The synthesized catalyst exhibits good activity and stability in both acidic and alkaline media.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Dermatology
Artem A. Trotsyuk, Kellen Chen, Sun Hyung, Kun (Cathy) Ma, Dominic Henn, Alana M. Mermin-Bunnell, Smiti Mittal, Jagannath Padmanabhan, Madelyn R. Larson, Sydney R. Steele, Dharshan Sivaraj, Clark A. Bonham, Chikage Noishiki, Melanie Rodrigues, Yuanwen Jiang, Serena Jing, Simiao Niu, Arhana Chattopadhyay, David P. Perrault, Melissa C. Leeolou, Katharina S. Fischer, Gurupranav Gurusankar, Hudson Choi Kussie, Derrick C. Wan, Michael Januszyk, Michael T. Longaker, Geoffrey C. Gurtner
Summary: The study focused on the importance of mechanotransduction in inflammatory and fibrotic signaling during IPF. Deleting Focal Adhesion Kinase (FAK) in mice reduced expression of fibrotic and inflammatory genes in lungs, while FAK inhibition had a less effect on IPF fibroblasts compared to normal human fibroblasts. Administering FAK-I at early stages of fibrosis may attenuate the FAK-mediated fibrotic response pathway in IPF.
ADVANCES IN WOUND CARE
(2022)
Review
Chemistry, Multidisciplinary
Kemeng Xiao, Jun Liang, Xinyu Wang, Tianfeng Hou, Xiaoning Ren, Panqing Yin, Zhiping Ma, Cuiping Zeng, Xiang Gao, Tao Yu, Tong Si, Bo Wang, Chao Zhong, Zhifeng Jiang, Chun-Sing Lee, Jimmy Chai-mei Yu, Po Keung Wong
Summary: SAPS integrates natural and artificial photosynthesis to convert solar energy, utilizing synthetic materials and biological components. This review comprehensively discusses various combinations of light-capturing components and catalytic centers in SAPS, highlighting the advantages and disadvantages of the system.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yiliang Lin, Xiang Gao, Jiping Yue, Yin Fang, Jiuyun Shi, Lingyuan Meng, Clementene Clayton, Xin-Xing Zhang, Fengyuan Shi, Junjing Deng, Si Chen, Yi Jiang, Fabricio Marin, Jingtian Hu, Hsiu-Ming Tsai, Qing Tu, Eric W. Roth, Reiner Bleher, Xinqi Chen, Philip Griffin, Zhonghou Cai, Aleksander Prominski, Teri W. Odom, Bozhi Tian
Summary: In this study, a soil-inspired chemical system was developed to modulate microbial communities and impact biogeochemical cycles and homeostasis in human health. The composite material showed potential in rectifying gut microbiome dysbiosis and inflammatory symptoms.
Article
Computer Science, Artificial Intelligence
Chen Wang, Jiang Zhong, Qizhu Dai, Yafei Qi, Qien Yu, Fengyuan Shi, Rongzhen Li, Xue Li, Bin Fang
Summary: This study proposes a novel Channel Correlation Distillation (CCD) method for semantic segmentation to address the issue of neglecting channel correlation knowledge transfer in prior methods. By minimizing the distance between the channel correlation maps of the student and teacher models, the student model is guided to mimic the teacher model. Additionally, multi-scale discriminators are introduced to sufficiently distinguish the multi-scale differences between the teacher and student segmentation outputs. Extensive experiments on popular datasets validate the superiority of CCD, consistently improving state-of-the-art methods for semantic segmentation.
INTERNATIONAL JOURNAL OF PATTERN RECOGNITION AND ARTIFICIAL INTELLIGENCE
(2023)
Article
Biotechnology & Applied Microbiology
Yuanwen Jiang, Artem A. Trotsyuk, Simiao Niu, Dominic Henn, Kellen Chen, Chien-Chung Shih, Madelyn R. Larson, Alana M. Mermin-Bunnell, Smiti Mittal, Jian-Cheng Lai, Aref Saberi, Ethan Beard, Serena Jing, Donglai Zhong, Sydney R. Steele, Kefan Sun, Tanish Jain, Eric Zhao, Christopher R. Neimeth, Willian G. Viana, Jing Tang, Dharshan Sivaraj, Jagannath Padmanabhan, Melanie Rodrigues, David P. Perrault, Arhana Chattopadhyay, Zeshaan N. Maan, Melissa C. Leeolou, Clark A. Bonham, Sun Hyung Kwon, Hudson C. Kussie, Katharina S. Fischer, Gurupranav Gurusankar, Kui Liang, Kailiang Zhang, Ronjon Nag, Michael P. Snyder, Michael Januszyk, Geoffrey C. Gurtner, Zhenan Bao
Summary: Smart bandages based on multimodal wearable devices have the potential to monitor and intervene in the healing process of chronic wounds. However, the integration of sensors and stimulators in current smart bandage technologies is limited. In this study, a flexible bioelectronic system with wireless power, closed-loop sensing and stimulation circuits, and skin-interfacing hydrogel electrodes with switchable adhesion was developed to address these challenges. The wound care system showed improved healing and tissue regeneration in preclinical wound models.
NATURE BIOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Weichen Wang, Yuanwen Jiang, Donglai Zhong, Zhitao Zhang, Snehashis Choudhury, Jian-Cheng Lai, Huaxin Gong, Simiao Niu, Xuzhou Yan, Yu Zheng, Chien -Chung Shih, Rui Ning, Qing Lin, Deling Li, Yun-Hi Kim, Jingwan Kim, Yi-Xuan Wang, Chuanzhen Zhao, Chengyi Xu, Xiaozhou Ji, Yuya Nishio, Hao Lyu, Jeffrey B. -H. Tok, Zhenan Bao
Summary: Through rational design and engineering, we have developed a soft prosthetic electronic skin that mimics the sensory feedback and mechanical properties of natural skin. It is capable of multimodal perception, neuromorphic pulse-train signal generation, and closed-loop actuation. Our e-skin has achieved low subthreshold swing, low operation voltage, low power consumption, and medium-scale circuit integration complexity for stretchable organic devices, thanks to a trilayer, high-permittivity elastomeric dielectric.
Article
Chemistry, Multidisciplinary
Shirley L. Yitzhak-David, Menahem Y. Rotenberg
Summary: Electroceuticals have great potential for both basic research and clinical applications, but the invasive nature of the leads is a major limitation. To address this issue, leadless bio-modulation technologies, such as optoelectronic devices and materials, have been proposed. This perspective article highlights the recent advances in this field and discusses their limitations and potential.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yongjie Yu, Shanshan Pi, Tan Ke, Baiqin Zhou, Weixiang Chao, Yang Yang, Zhida Li, Guifeng Li, Nanqi Ren, Xiang Gao, Lu Lu
Summary: Researchers have fabricated an artificial soil-like material to enhance the growth and metabolism of bacteria in gas fermentation and improve the production of biopolymer. The addition of this material increased the solubility of CO2, resulting in higher biomass and biopolymer production. It also positively modulated the metabolism of biopolymer synthesis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Qing-Qiang Ren, Sung-Il Baik, Dong An, Dieter Isheim, Mingfang Zhu, Bruce W. Krakauer, David N. Seidman
Summary: The austenite decomposition phase transformation in a low-carbon dual-phase steel is studied under different inter-critical annealing parameters. The results show that the annealing temperature and time affect the austenite volume fraction, while the cooling rate has a minor effect on the final microstructure and mechanical properties. Interestingly, samples cooled at a specific rate exhibit higher yield strength values compared to other rates, with a positive correlation between yield strength and yield-point elongation, and a negative correlation with ultimate tensile strength. The effects of the cooling rate on the mechanical properties can be explained by the formation of carbon Cottrell atmospheres and increase of pearlite volume fraction. Based on the secondary phase components and strength evolution, the microstructure-property correlation can be schematically illustrated to guide the selection of heat-treatment parameters.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Computer Science, Artificial Intelligence
Ying Meng, Fengyuan Shi, Lixin Tang, Defeng Sun
Summary: Reinforcement learning is a promising approach for learning and decision-making in dynamic environments. This article explores reducing the action space in reinforcement learning using supermodularity. By applying monotone comparative statics, a monotonicity cut is proposed to remove unpromising actions from the action space. Evaluation on benchmark datasets and comparison with popular baseline algorithms demonstrate the effectiveness of the monotonicity cut in improving the performance of reinforcement learning.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Yiliang Lin, Jiuyun Shi, Wei Feng, Jiping Yue, Yanqi Luo, Si Chen, Bin Yang, Yuanwen Jiang, Huicheng Hu, Chenkun Zhou, Fengyuan Shi, Aleksander Prominski, Dmitri V. Talapin, Wei Xiong, Xiang Gao, Bozhi Tian
Summary: Semiconductor-based biointerfaces can be established on the surface of the plasma membrane or within the cytoplasm. In Gram-negative bacteria, the periplasmic space offers additional opportunities for biomineralization, allowing for non-genetic modulation interfaces. The formation of semiconductor nanoclusters containing single- and multiple-metal elements within the periplasm has been observed. These periplasmic semiconductors display defect-dominant fluorescent properties and can increase adenosine triphosphate levels and malate production when coupled with photosensitization.
Article
Green & Sustainable Science & Technology
Shanshan Pi, Wenjun Yang, Wei Feng, Ruijie Yang, Weixiang Chao, Wenbo Cheng, Lei Cui, Zhida Li, Yiliang Lin, Nanqi Ren, Chen Yang, Lu Lu, Xiang Gao
Summary: Semiconductor biohybrids have the potential to convert solar energy into chemical energy efficiently. This study proposes a strategy to produce semiconductor biohybrids using pollutants in wastewater, achieving scalable production of 2,3-butanediol.
NATURE SUSTAINABILITY
(2023)
Meeting Abstract
Cell Biology
Artem A. Trotsyuk, Yuanwen Jiang, Simiao Niu, Dominic Henn, Kellen Chen, Maddy Larson, Ethan Beard, Aref Saberi, Dharshan Sivaraj, Alana Malaika Mermin-Bunnell, Smiti Mittal, Serena Jing, Sun Hyung Kwon, Clark Bonham, Jagannath Padmanabhan, David Perrault, Melissa C. Leeolou, Michael Januszyk, Zhenan Bao, Geoffrey C. Gurtner
WOUND REPAIR AND REGENERATION
(2022)