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| 1 | Systematic study on the mechanical and electric behaviors of the nonbuckling interconnect design of stretchable electronics显示文摘Recently, we developed a nonbuckling interconnect design that provides an effective approach to simultaneously achieving high elastic stretchability, easiness for encapsulation, and high electric performance for stretchable electronics. This paper aims to systematically study its mechanical and electric behaviors, including comparisons of the nonbuckling and buckling interconnect designs on stretchability, effects of the thickness on electric performance, and modeling and experimental investigations on the finite deformation mechanics. It is found that the results on stretchability depend on the layouts. Long straight segments and small arc radii for nonbuckling interconnects yield an enhancement of stretchability, which is much better than that of buckling designs. On the other hand, shorter straight segments or thicker interconnects are better to lower the resistances of interconnects.Therefore, optimization of the designs needs to balance the requirements of both the mechanical and electric performances. The finite deformation of interconnects during stretching is analyzed. The established analytic model is well validated by both the finite element modeling and experimental investigations. This work is key for providing the design guidelines for nonbucklingbased stretchable electronics. | Hao Liu RiYe Xue JianQiao Hu XueCheng Ping HuaPing Wu MingQi Huang Han Zhang Xu Guo Rui Li YuLi Chen YeWang Su | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，11： | 3 |
| 2 | On the Simulation of Fragmentation During the Process of Ceramic Tile Impacted by Blunt Projectile with SPH Method in LS-DYNA显示文摘Ceramics are extensively used in protective structures which are often subjected to projectile impacts.During an impact process of a ceramic target by a projectile,fragmentation occurs in both the target and the projectile.It is challenging to simulate such events and predict residual mass and velocity of the projectile.In this work,we attempt to use smoothed particle hydrodynamics(SPH)in LS-DYNA to reproduce fragmentation of the target and the projectile and predict residual mass and velocity of the projectile during a projectile impact of a ceramic target.SPH models for an alumina ceramic tile impacted by a blunt tungsten heavy alloy projectile are established.SPH simulation results of residual mass and velocity of the projectile as well as ejecta and bulge movements of the ceramic tile are obtained and compared with experimental data and simulation results of other numerical approaches.It is found that SPH simulation can properly reproduce the impact fragmentation of the target and the projectile,and shows advantages over existing numerical approaches in the prediction accuracy of residual mass and velocity.Moreover,effects of some numerical aspects of SPH,including particle spacing,contact treatment and parameters in artificial viscosity and smoothing length,on simulation results are identified.A simple approach using identical smoothing length and balanced artificial viscosity is proposed to reduce particle spacing sensitivity.The observed parametric effects and the proposed approach will provide guidance to set appropriate parameters values for SPH simulation of impact fragmentation. | Yihua Xiao Hecheng Wu Xuecheng Ping | 2020 | Computer Modeling in Engineering & Sciences2020，，3： | 2 |
| 3 | Image Segmentation Using Some Piecewise Constant Level Set Methods with MBO Type of Projection显示文摘 | Tai Xuecheng Oddvar C Lin Ping | 2007 | International Journal of Computer Vision2007，73，1： | 1 |
| 4 | Singular stress analyses of V-notched anisotropic plates based on a novel finite element method显示文摘 | PING XUECHENG CHEN MENGCHENG XIE JILONG | 2008 | Engineering Fracture Mechanics2008，75，： | 1 |
| 5 | Analysis of the interaction within a rectangular array of rectangular inclusions using a new hybrid finite element method显示文摘 | CHEN MENGCHENG PING XUECHENG | 2009 | Eng Fract Mech2009，76，： | 1 |
| 6 | Synthesis of tetrasubstituted thiophenes from pyridinium 1,4-zwitterionic thiolates and modified activated alkynes显示文摘Pyridinium 1,4-zwitterionic thiolates were applied to a formal [3+2] annulation reaction with modified activated alkynes, affording various tetrasubstituted thiophenes with aryl, alkenyl, alkyl or silyl group at the special position. The structural modification of alkyne substrates enabled the synthesis of diverse thiophenes to be achieved using the pyridinium 1,4-zwitterionic thiolates as the sulfur-containing building blocks. This approach is metal-free and catalyst-free. | Taimin Wang Xuecheng Zhu Qingqing Tao Wei Xu Haiyan Sun Ping Wu Bin Cheng Hongbin Zhai | 2021 | Chinese Chemical Letters2021，32，12： | 0 |
| 7 | Roles of trichomes in tea plant resistance against multiple abiotic and biotic stresses显示文摘Tea trichomes contribute significantly to tea flavors by providing diverse and specific flavor-determining metabolites,including catechins,caffeine,theanine,and volatiles.However,not much is known about the physiological functions of tea trichomes in tea plant adaptation to complex environments,nor the trichome development.Tea trichomes not only build up chemical defenses,but also act as the first physical barrier protecting herbivore attacks,reflecting high light and UV-B radiation,and preventing water loss.Moreover,transcriptome profiling on the tea trichomes compared with the trichome-removed leaves also showed that tea trichomes highly expressed numerous defense-related genes involved in protection from high light and UV-B radiation,cold stress,disease resistance signal transduction,anti-herbivore or anti-abiotic peptide biosynthesis,and other defense responses.Several pieces of experimental evidence supported the notes,highlighting the roles of tea trichomes in plant defenses against both abiotic and biotic stresses.The study provides fresh insights into the multiple protective functions of tea trichome for tea plant adaptation to harsh environments.The new understanding on tea trichomes could benefit the development of better breading strategy for new tea varieties with greater adaption and tolerance to changing environmental challenges. | Penghui Li Yanrui Zhang Zhili Ye Hao Zuo Ping Li Xuecheng Zhao Zhihui Chen Changsong Chen Jian Zhao | 2022 | Beverage Plant Research2022，2，1： | 0 |
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