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Inside Back Cover: Irradiation-Wavelength Directing Circularly Polarized Luminescence in Self-Organized Helical Superstructures Enabled by Hydrogen-Bonded Chiral Fluorescent Molecular Switches (Angew. Chem. Int. Ed. 52/2021)

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Angewandte Chemie International Edition 2021年第52期60卷

作者： Yanrong He Dr. Shu Zhang Dr. Hari Krishna Bisoyi Jinghui Qiao Hong Chen JingJing Gao Prof. Jinbao Guo Prof. Quan Li Key Laboratory of Carbon Fibers and Functional Polymers Ministry of Education College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Institute of Advanced Materials School of Chemistry and Chemical Engineering Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research Southeast University Nanjing 211189 China Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent Ohio 44242 USA

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Innenrücktitelbild: Irradiation-Wavelength Directing Circularly Polarized Luminescence in Self-Organized Helical Superstructures Enabled by Hydrogen-Bonded Chiral Fluorescent Molecular Switches (Angew. Chem. 52/2021)

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Angewandte Chemie 2021年第52期133卷

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Irradiation-Wavelength Directing Circularly Polarized Luminescence in Self-Organized Helical Superstructures Enabled by Hydrogen-Bonded Chiral Fluorescent Molecular Switches

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Angewandte Chemie 2021年第52期133卷

Two light-driven chiral fluorescent molecular switches, ( R , S , R )-switch 1 and ( R , S , R )-switch 2 , are prepared by means of hydrogen-bonded (H-bonded) assembly of a photoresponsive ( S ) chiral fluorescent molecule, respectively with a cyano substitution at different positions as an H-bond acceptor and an opposite ( R ) chiral molecule as an H-bond donor. The resulting two switches exhibit tunable and reversible Z / E photoisomerization irradiated with 450 nm blue and 365 nm UV light. When doped into an achiral liquid crystal, both switches are found to be able to form a CPL tunable luminescent helical superstructure. In contrast to the tunable CPL characteristics of the system incorporating switch 2 , exposure of the system incorporating switch 1 to 365 nm and 450 nm radiation can lead to controllable different photostationary CPL behavior, including switching-off and polarization inversion. In addition, optical information coding is demonstrated using the system containing switch 1 .

关键词： circularly polarized luminescence handedness inversion hydrogen-bonded chiral fluorescent switch luminescent helical superstructures

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Corrigendum to "Variations of oxidative potential of PM2.5 in a medium-sized residential city in South Korea measured using three different chemical assays" [920 (2024) 171053]

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The Science of the total environment 2024年 926卷 172075页

作者： Pyung-Rae Kim Sung-Won Park Young-Ji Han Myong-Hwa Lee Thomas M Holsen Cheol-Heon Jeong Greg Evans Agriculture and Life Sciences Research Institute Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea. Dept. of Interdisciplinary Graduate Program in Environmental and Biomedical Convergence Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea. Dept. of Environmental Science Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea Gangwon particle pollution research and management center Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea. Electronic address: youngji@kangwon.ac.kr. Gangwon particle pollution research and management center Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea Dept. of Environmental Engineering Kangwon National University Chuncheon Gangwon-do 24341 Republic of Korea. Dept. of Civil and Environmental Engineering Clarkson University Potsdam NY 13699 USA. Dept. of Chemical Engineering and Applied Chemistry University of Toronto Toronto Ontario MS5 3E5 Canada.

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Characterization of complete mitochondrial genome of two-spot swimming crabCharybdis bimaculata(Miers, 1886)

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Mitochondrial DNA Part B 2018年第2期3卷 900-901页

作者： Nack-Keun Kim Sapto Andriyono Ah Ran Kim Chung Il Lee Hyun-Woo Kim Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Republic of Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Republic of KoreaDepartment of Marine Fisheries and Marine Faculty Universitas Airlangga C Campus Jl Mulyorejo Surabaya East Java Indonesia Department of Marine Bioscience Gangneung-Wonju National University Gangneung Republic of Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Republic of KoreaDepartment of Marine Biology Pukyong National University Busan Republic of Korea

The two-spot swimming crabCharybdis bimaculata(Miers,1886) is an important decapod species in the benthic ecosystem of Korean waters. In this study, we determined its complete mitochondrial genome by the combination of NGS analysis using MiSeq platform and PCR-based cloning method. The circular mitochondrial genome ofC. bimaculatawas 15,714 bp in length in which the standard set of 13 protein-coding genes, 22 tRNA genes, and 2 rRNA genes were encoded. Phylogenic analysis showed *** most closely related toCharybdis feriata. The complete mitogenome sequence information ofC. bimaculatawould provide useful data for the conservation of their population in the Pacific ocean.

关键词： Next generation sequencing Charybdis bimaculata mitogenome decapod phylogeny

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Numerical Visualization of Air Intake Induced by Free Surface Vortex

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Journal of Thermal Science 2017年第6期26卷 540-544页

作者： Young Kyu Park Mohan Kumar Dey Yoon Hwan Choi Yeon Won Lee Research Institute of Industrial Science & Technology Pukyong National University Busan Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Korea Department of Mechanical Design Engineering Pukyong National University Busan Korea

Free surface vortex control is vital in a pump sump system because the air absorbed by free surface vortex induc- es noise, vibration, and cavitation corrosion on the pumping system. In this study, the change of free surface vor- tex and air absorption in a pump intake has been investigated by the Volume of Fraction （VOF） method with steady multiphase flow model in order to represent the behavior of the free surface vortex exactly. The homoge- neous free surface model is used to apply interactions of air and water. The results show that air intake by the free surface vortex motion can be visualized using the iso-surface of air volume fraction. The vortices make an air column from the free surface to the pump intake. Also, it was found that the flee surface vortex can be controlled by installing curtain walls.

关键词： free surface vortex numerical visualization curtain wall air intake

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Polar jets of swimming bacteria condensed by a patterned liquid crystal

arXiv

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arXiv 2020年

作者： Turiv, Taras Koizumi, Runa Thijssen, Kristian Genkin, Mikhail M. Yu, Hao Peng, Chenhui Wei, Qi-Huo Yeomans, Julia M. Aranson, Igor S. Doostmohammadi, Amin Lavrentovich, Oleg D. Advanced Materials Liquid Crystal Institute Chemical Physics Interdisciplinary Program Kent State University KentOH44242 United States Rudolf Peierls Centre for Theoretical Physics University of Oxford Clarendon Laboratory Parks Rd. OxfordOX1 3PU United Kingdom Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring HarborNY11724 United States Department of Physics Kent State University KentOH44242 United States Department of Biomedical Engineering Pennsylvania State University University ParkPA16802 United States

Active matter exhibits remarkable collective behavior in which flows, continuously generated by active particles, are intertwined with the orientational order of these particles. The relationship remains poorly understood as the activity and order are difficult to control independently. Here we demonstrate important facets of this interplay by exploring dynamics of swimming bacteria in a liquid crystalline environment with pre-designed periodic splay and bend in molecular orientation. The bacteria are expelled from the bend regions and condense into polar jets that propagate and transport cargo unidirectionally along the splay regions. The bacterial jets remain stable even when the local concentration exceeds the threshold of bending instability in a non-patterned system. Collective polar propulsion and different role of bend and splay are explained by an advection-diffusion model and by numerical simulations that treat the system as a two-phase active nematic. The ability of prepatterned liquid crystalline medium to streamline the chaotic movements of swimming bacteria into polar jets that can carry cargo along a predesigned trajectory opens the door for potential applications in cell sorting, microscale delivery and soft microrobotics. Copyright © 2020, The Authors. All rights reserved.

关键词： Bacteria

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The effect of wavelength on a floating body and its location for wave energy absorption using CFD 28

The effect of wavelength on a floating body and its location...

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28th International Ocean and Polar engineering Conference, ISOPE 2018

作者： Kim, Hyunjong Parthasarathy, Nanjundan Li, Kui Ming Choi, Yoon Hwan Oshima, Nobuyuki Lee, Yeon Won Interdisciplinary program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Korea Republic of Korea Marine Equipment Research Institute Busan Korea Republic of Research Institute of Industrial Science and Technology Pukyong National University Busan Korea Republic of Graduate School of Engineering Hokkaido University Sapporo Hokkaido Japan Department of Mechanical Design Engineering Pukyong National University Busan Korea Republic of

ISBN: (纸本)9781880653876

In order to design a wave energy generating system of a floating type, a 6- Degrees Of Freedom (DOF) motion technique was applied to Computational Fluid Dynamics (CFD) analysis on this floating body and the behavior is interpreted according to the nature of the incoming waves. In the numerical study, the tuning factor concept is employed, as it explains the relation between the maximum pitch angle and the length of the floating body and wavelength. The relation between tuning factor & pitch period for the generated waves is compared to analyze the effects of wave energy absorption. Linear waves are generated in a tank model using a single floater. In this paper, we focus on wavelength of a floater and 14 cases have been modeled for the same. It was found that the wave energy absorption varies in different parameters of wavelengths and also the different locations of the floating body in a wave affect the wave energy absorption, thus necessitating the importance of the location of a floater in a wave and its effect on wave energy absorption. Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE)

关键词： Computational fluid dynamics

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Phase-change metal ink with pH-controlled chemical sintering for versatile and scalable fabrication of variable stiffness electronics

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Science Advances 2025年第22期11卷 eadv4921页

作者： Simok Lee Gun-Hee Lee Inho Kang Woojin Jeon Semin Kim Yejin Ahn Choong Yeon Kim Do A Kwon Michael D. Dickey Steve Park Seongjun Park Jae-Woong Jeong School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea. Medical Research Center Seoul National University Seoul 03080 Republic of Korea. Departments of Cogno-Mechatronics Engineering and Optics and Mechatronics Engineering Pusan National University Busan 46241 Republic of Korea. Graduate School of Semiconductor Technology Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea. KAIST Information and Electronics Research Institute Daejeon 34141 Republic of Korea. Research Laboratory of Electronics Massachusetts Institute of Technology (MIT) Cambridge MA 02139 USA. Department of Mechanical Engineering Massachusetts Institute of Technology (MIT) Cambridge MA 02139 USA. Department of Chemical and Biomolecular Engineering North Carolina State University (NCSU) Raleigh NC 27606 USA. Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 34141 Republic of Korea. KAIST Institute for NanoCentury Daejeon 34141 Republic of Korea. Department of Biomedical Sciences College of Medicine Seoul National University Seoul 03080 Republic of Korea. School of Transdisciplinary Innovations Seoul National University Seoul 03080 Republic of Korea. Interdisciplinary Program in Bioengineering College of Engineering Seoul National University Seoul 08826 Republic of Korea. Department of Transdisciplinary Medicine Seoul National University Hospital Seoul 03080 Republic of Korea. KAIST Institute for Health Science and Technology Daejeon 34141 Republic of Korea.

Variable stiffness electronics represent the forefront of adaptive technology, integrating rigid and soft electronics in a single system through dynamic mechanical modulation. While gallium’s high modulus tuning ratio and rapid phase transitions make it ideal for transformative electronic systems (TES), its liquid-state instability, high surface tension, and unintended phase transitions during processing pose substantial challenges. Here, we introduce STiffness-Adjustable temperature-Responsive ink (STAR ink), a chemically sinterable gallium composite electronic ink designed to overcome these obstacles. STAR ink enables high-resolution (~50 micrometers) circuit patterning, large-scale batch fabrication, and three-dimensional structure coating at room temperature. Through pH-controlled chemical sintering, STAR ink–based TES exhibits exceptional mechanical tunability (tuning ratio: 1465) and electrical conductivity (2.27 × 106 siemens per meter). Demonstrated applications—from multilayered variable stiffness printed circuit boards (PCBs) matching standard PCBs’ complexity to body-temperature responsive neural probe—underscore STAR ink’s potential for reconfigurable electronics across consumer electronics and biomedical devices.

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scTenifoldXct: A semi-supervised method for predicting cell-cell interactions and mapping cellular communication graphs

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Cell systems 2023年第4期14卷 302-311.e4页

作者： Yongjian Yang Guanxun Li Yan Zhong Qian Xu Yu-Te Lin Cristhian Roman-Vicharra Robert S Chapkin James J Cai Department of Electrical and Computer Engineering Texas A&M University College Station TX 77843 USA. Department of Statistics Texas A&M University College Station TX 77843 USA. Key Laboratory of Advanced Theory and Application in Statistics and Data Science-MOE School of Statistics East China Normal University 3663 North Zhongshan Road Shanghai 200062 China. Department of Veterinary Integrative Biosciences Texas A&M University College Station TX 77843 USA. Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei Taiwan. Department of Nutrition and the Program in Integrative Nutrition & Complex Diseases Texas A&M University College Station TX 77843 USA. Electronic address: r-chapkin@tamu.edu. Department of Electrical and Computer Engineering Texas A&M University College Station TX 77843 USA Department of Veterinary Integrative Biosciences Texas A&M University College Station TX 77843 USA Interdisciplinary Program of Genetics Texas A&M University College Station TX 77843 USA. Electronic address: jcai@tamu.edu.

We present scTenifoldXct, a semi-supervised computational tool for detecting ligand-receptor (LR)-mediated cell-cell interactions and mapping cellular communication graphs. Our method is based on manifold alignment, using LR pairs as inter-data correspondences to embed ligand and receptor genes expressed in interacting cells into a unified latent space. Neural networks are employed to minimize the distance between corresponding genes while preserving the structure of gene regression networks. We apply scTenifoldXct to real datasets for testing and demonstrate that our method detects interactions with high consistency compared with other methods. More importantly, scTenifoldXct uncovers weak but biologically relevant interactions overlooked by other methods. We also demonstrate how scTenifoldXct can be used to compare different samples, such as healthy vs. diseased and wild type vs. knockout, to identify differential interactions, thereby revealing functional implications associated with changes in cellular communication status.

关键词： cell-cell interaction cellular communication gene regression network machine learning manifold alignment neural networks scRNA-seq single-cell RNA sequencing

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