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20th International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2016

作者： Zhang, L.Q. Liu, Y.P. Zhao, X.F. Li, Z.H. Wang, W. Institute of Microelectronics Peking University China School of Basic Medical Sciences Peking University China National Key Laboratory of Science and Technology on Micro/Nano Fabrication China Innovation Center for Micro-Nano-electronics and Integrated System China

ISBN: (纸本)9780979806490

This paper reported a novel fluorescent pipette with a high biocompatibility, high chemical inert-ness and excellent electrical insulating capability, by simply coating the pipette with Parylene-C. 500nm-thick Parylene-C was conformal deposited on the glass pipette with 2μm tip diameter. After annealing at 270°C for 1hour under N2, Parylene-C fluorescence was enhanced and visible under all three channels of fluorescence microscope. Experiment results showed that targeted cell manipulation can be achieved guided by the fluorescent of pipette tip. This method is promising to accomplish in-vivo optically targeted cell manipulation such as micro-injection and patch-clamp recordings.

关键词： Fluorescence

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Full-angle negative reflection with an ultrathin acoustic gradient metasurface: Floquet-bloch modes perspective and experimental verification

arXiv

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arXiv 2017年

作者： Liu, Bingyi Zhao, Jiajun Xu, Xiaodong Zhao, Wenyu Jiang, Yongyuan Institute of Modern Optics Department of Physics Harbin Institute of Technology Harbin150001 China Division of Computer Electrical and Mathematical Sciences and Engineering King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia Key Lab of Micro-Optics and Photonic Technology of Heilongjiang Province Harbin150001 China Key Laboratory of Micro-Nano Optoelectronic Information System Ministry of Industry and Information Technology Harbin150001 China Collaborative Innovation Center of Extreme Optics Taiyuan Shanxi030006 China

Metasurface with gradient phase response offers new alternative for steering the propagation of waves. Conventional Snell's law has been revised by taking the contribution of local phase gradient into account. However, the requirement of momentum matching along the metasurface sets its nontrivial beam manipulation functionality within a limited-angle incidence. In this work, we theoretically and experimentally demonstrate that the acoustic gradient metasurface supports the negative reflection for full-angle incidence. The mode expansion theory is developed to help understand how the gradient metasurface tailors the incident beams, and the full-angle negative reflection occurs when the first negative order Floquet-Bloch mode dominates. The coiling-up space structures are utilized to build desired acoustic gradient metasurface and the full-angle negative reflections have been perfectly verified by experimental measurements. Our work offers the Floquet-Bloch modes perspective for qualitatively understanding the reflection behaviors of the acoustic gradient metasurface and enables a new degree of the acoustic wave manipulating. Copyright © 2017, The Authors. All rights reserved.

关键词： Acoustics

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Covalent Functionalization of Black Phosphorus with Conjugated Polymer for Information Storage

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Angewandte Chemie 2018年第17期130卷

作者： Yaming Cao Xiangyu Tian Junwei Gu Bo Liu Bin Zhang Sannian Song Fei Fan Yu Chen Key Laboratory for Advanced Materials Institute of Applied Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China Shaanxi Key Laboratory of Macromolecular Science and Technology Department of Applied Chemistry School of Science Northwestern Polytechnical University Xi'an Shaanxi 710072 China School of Chemistry Biology and Materials Engineering Suzhou University of Science and Technology No 1 Kerui Road Suzhou 215009 Jiangsu Province China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Micro-system and Information Technology CAS 865 Changning Road Shanghai 200050 China

Major disadvantages of black phosphorus (BP) are its poor air‐stability and poor solubility in common organic solvents. The best way to solve this problem is to incorporate BP into a polymer backbone or a polymer matrix to form novel functional materials that can provide both challenges and opportunities for new innovation in optoelectronic and photonic applications. As a proof‐of concept application, we synthesized in situ the first highly soluble conjugated polymer‐covalently functionalized BP derivative (PDDF‐ g ‐BP) which was used to fabricate a resistive random access memory (RRAM) device with a configuration of Au/PDDF‐ g ‐BP/ITO. In contrast to PDDF without memory effect, PDDF‐ g ‐BP‐based device exhibits a nonvolatile rewritable memory performance, with a turn‐on and turn‐off voltages of +1.95 V and −2.34 V, and an ON/OFF current ratio of 10 4 . The current through the device in both the ON and OFF states is still kept unchanged even at 200th switching cycle. The PDDF/BP blends show a very unstable memory performance with a very small ON/OFF current ratio.

关键词： Kovalente Funktionalisierung Polymermodifikationen Schwarzer Phosphor Synthesen Vielfach beschreibbares Speichermedium

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LifeTime and improving European healthcare through cell-based interceptive medicine (vol 587, pg 377, 2020)

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NATURE 2021年第7852期592卷 E8-E8页

作者： Rajewsky, Nikolaus Almouzni, Genevieve Gorski, Stanislaw A. Aerts, Stein Amit, Ido Bertero, Michela G. Bock, Christoph Bredenoord, Annelien L. Cavalli, Giacomo Chiocca, Susanna Clevers, Hans De Strooper, Bart Eggert, Angelika Ellenberg, Jan Fernandez, Xose M. Figlerowicz, Marek Gasser, Susan M. Hubner, Norbert Kjems, Jorgen Knoblich, Jurgen A. Krabbe, Grietje Lichter, Peter Linnarsson, Sten Marine, Jean-Christophe Marioni, John C. Marti-Renom, Marc A. Netea, Mihai G. Nickel, Dorthe Nollmann, Marcelo Novak, Halina R. Parkinson, Helen Piccolo, Stefano Pinheiro, Ines Pombo, Ana Popp, Christian Reik, Wolf Roman-Roman, Sergio Rosenstiel, Philip Schultze, Joachim L. Stegle, Oliver Tanay, Amos Testa, Giuseppe Thanos, Dimitris Theis, Fabian J. Torres-Padilla, Maria-Elena Valencia, Alfonso Vallot, Celine van Oudenaarden, Alexander Vidal, Marie Voet, Thierry Berlin Institute for Medical Systems Biology Max Delbrück Center for Molecular Medicine in the Helmholtz Association Berlin Germany Charité-Universitätsmedizin Berlin Germany Berlin Institute of Health (BIH) Berlin Germany German Center for Cardiovascular Research (DZHK) Partner Site Berlin Berlin Germany Institute for Biology Humboldt University of Berlin Berlin Germany Cardiovascular and Metabolic Sciences Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC) Berlin Germany Department of Pediatric Oncology/Hematology Charité-Universitätsmedizin Berlin Berlin Germany Institut Curie CNRS PSL Research University Sorbonne Université Nuclear Dynamics Unit Equipe Labellisée Ligue contre le cancer Paris France VIB Center for Brain and Disease Research Leuven Belgium Department of Human Genetics KU Leuven Leuven Belgium Department of Neurosciences KU Leuven Leuven Belgium UK Dementia Research Institute at UCL University College London London UK Wellcome Sanger Institute Wellcome Genome Campus Cambridge UK Department of Immunology Weizmann Institute of Science Rehovot Israel Centre for Genomic Regulation (CRG) Barcelona Institute of Science and Technology Barcelona Spain CNAG-CRG Centre for Genomic Regulation Barcelona Institute of Science and Technology Barcelona Spain Universitat Pompeu Fabra Barcelona Spain ICREA Barcelona Spain CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences Vienna Austria Department of Laboratory Medicine Medical University of Vienna Vienna Austria Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases Vienna Austria Department of Medical Humanities Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht The Netherlands Institute of Human Genetics UMR 9002 CNRS and University of Montpellier Montpellier France Department of Experimental Oncology IEO European Institute of Oncology IRCCS Milan Italy Department of Oncology and Hemato

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Silicon acoustic waveguide based on locally resonant phononic crystal

Silicon acoustic waveguide based on locally resonant phononi...

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IEEE International Conference on micro Electro Mechanical systems

作者： D. Feng W. L. Jiang D. H. Xu B. Xiong Y. L. Wang University of Chinese Academy of Sciences Beijing China Science and Technology on Micro-system Laboratory Chinese Academy of Science Shanghai China

ISBN: (纸本)9781509006090

This paper demonstrates a phononic crystal based silicon acoustic waveguide for the controllable propagation of Lamb waves in several MHz range. Different from the former phononic crystal applied in MEMS, which is based on Bragg scattering theory, the phononic crystal employed in this paper is based on locally resonant theory, which could provide better confinement of the acoustic waves. The silicon waveguide was fabricated by micro machining process, and tested by a combination of the fluid coupling method and Laser Doppler Vibrometer. The experimental result shows a good agreement with our theory prediction, that the designed locally resonant phononic crystal could effectively confine the elastic waves with selected frequency range in the guiding zone. The locally resonant phononic crystal demonstrated in paper is a good candidate for the control of acoustic waves propagating in MEMS.

关键词： Decision support systems micromechanical devices

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SILICON CAVITY RESONATOR BASED ON LOCALLY RESONANT PHONONIC CRYSTAL

SILICON CAVITY RESONATOR BASED ON LOCALLY RESONANT PHONONIC ...

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IEEE Sensors

作者： Wanli Jiang Duan Feng Dehui Xu Bin Xiong Yuelin Wang University of Chinese Academy of Sciences Beijing CHINA SIMIT Science and Technology on Micro-system Laboratory Shanghai CHINA

In this paper, a silicon cavity-mode resonator based on locally resonant phononic crystal (PnC) is experimentally studied. The PnC resonator is realized by creating line defects on a two-dimension (2-D) silicon PnC. The silicon resonator was fabricated by micro machining process, and tested by a combination of the fluid coupling method and Laser Doppler Vibrometer. Two resonant frequencies (7.93MHz and 8.03MHz) were observed in the PnC resonator. The experimental results agree well with the simulated band structures of the perfect PnC and PnC resonator, that the resonant frequencies of the designed PnC resonator are in the range of the phononic bandgaps (PnBGs).

关键词： local resonant phononic crystal cavity-mode resonator

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Investigation of Ni doped Ge-Te materials for high temperature phase change memory applications

Investigation of Ni doped Ge-Te materials for high temperatu...

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Chinese Materials Congress on Functional and Functionally Structured Materials, CMC 2015

作者： Cao, Liang Liang Wu, Liang Cai Song, Zhi Tang Zhu, Wen Qing Zheng, Yong Hui Cheng, Yan Song, San Nian Ma, Zhong Yuan Xu, Ling State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Micro-system and Information Technology Chinese Academy of Sciences Shanghai200050 China Material Science and Engineering institute Shanghai University Shanghai200436 China Laboratory of Solid State Microstructures Nanjing University Nanjing210093 China

ISBN: (纸本)9783038357605

Ni-doped Ge-Te (Ni-GT) material was proposed and investigated for phase change random access memory (PCRAM) applications. With Ni addition, the crystallization temperature, data retention ability and crystallization speed were obviously improved. The surface roughness of crystalline Ni-GT films was decreased by Ni incorporation. Moreover, temperature dependent transmission electron microscopy (TEM) was applied to investigate the phase change behavior of Ni-GT films. All the experimental results demonstrated that Ni-GT material has potential for high-speed PCRAM applications in high temperature environment. © 2016 Trans Tech Publications, Switzerland.

关键词： Phase change materials

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First-principles study on the electronic, optical, and transport properties of monolayer α- and β-GeSe

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Physical Review B 2017年第24期96卷 245421-245421页

作者： Yuanfeng Xu Hao Zhang Hezhu Shao Gang Ni Jing Li Hongliang Lu Rongjun Zhang Bo Peng Yongyuan Zhu Heyuan Zhu Costas M. Soukoulis Department of Optical Science and Engineering and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education) Fudan University Shanghai 200433 China National Laboratory of Solid State Microstructure Nanjing University Nanjing 210093 China Department of Physics and Astronomy and Ames Laboratory Iowa State University Ames Iowa 50011 USA Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China State Key Laboratory of ASIC and System Institute of Advanced Nanodevices School of Microelectronics Fudan University Shanghai 200433 China Institute of Electronic Structure and Laser FORTH 71110 Heraklion Crete Greece

The extraordinary properties and the novel applications of black phosphorene induce the research interest in the monolayer group-IV monochalcogenides. Here using first-principles calculations, we systematically investigate the electronic, transport, and optical properties of monolayer α- and β-GeSe, revealing a direct band gap of 1.61 eV for monolayer α-GeSe and an indirect band gap of 2.47 eV for monolayer β-GeSe. For monolayer β-GeSe, the electronic/hole transport is anisotropic, with an extremely high electron mobility of 2.93×104cm2/Vs along the armchair direction, comparable to that of black phosphorene. Furthermore, for β-GeSe, robust band gaps nearly independent of the applied tensile strain along the armchair direction are observed. Both monolayer α- and β-GeSe exhibit anisotropic optical absorption in the visible spectrum.

关键词： Band gap First-principles calculations Optical conductivity 2-dimensional systems Monolayer films Density functional calculations

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Enhanced Light–Matter Interaction: Light–Matter Interaction within Extreme Dimensions: From Nanomanufacturing to Applications (Advanced Optical Materials 18/2018)

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Advanced Optical Materials 2018年第18期6卷

作者： Yun Xu Dengxin Ji Haomin Song Nan Zhang Yaowu Hu Thomas D. Anthopoulos Enzo M. Di Fabrizio Shumin Xiao Qiaoqiang Gan Institute of Semiconductors Chinese Academy of Science Beijing 100083 China Electrical Engineering Department University at Buffalo The State University of New York Buffalo NY 14260 USA Department of Mechanical and Aerospace Engineering University at Buffalo The State University of New York Buffalo NY 14260 USA Division of Physical Science and Engineering King Abdullah University of Science and Technology Thuwal 23955 Saudi Arabia State Key Laboratory on Tunable laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Shenzhen Graduate School Harbin Institute of Technology Shenzhen 518057 China

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Design and simulation of corrugated diaphragm applied to the MEMS fiber optic pressure sensor

Design and simulation of corrugated diaphragm applied to the...

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IEEE International Conference on Nano/micro Engineered and Molecular systems (NEMS)

作者： Yiming Gui Yangxi Zhang Guandong Liu Yilong Hao Chengchen Gao Institute of Microelectronics Peking University China National Key Laboratory of Science and Technology on Micro/Nano Fabrication China Innovation Center for Micro-Nano-electronics and Integrated System China Device and System Collaborative Innovation Center for Micro/Nano Fabrication Beijing China

ISBN: (纸本)9781509019489

In this paper, we propose a corrugated diaphragm applied to the fiber optic pressure sensor which needs a wide sensing range and a large deflection. The corrugated diaphragm can effectively improve the sensitivity of the sensor has been proved by ANSYS simulation. The stress concentration is weakened after the silicon is chamfered into corrugated diaphragm by isotropic etching process. The sensitivity of the corrugated diaphragm can reach to 0.44μ m/MPa which is two times larger than that of the same size planar diaphragm. The maximum sensing stress is up to 14MPa.

关键词： Stress Pressure sensors Sensitivity Optical fibers micromechanical devices Silicon

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