期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
Interaction between bending and mobile charges in a piezoelectric semiconductor bimorph 被引量:1
1
作者 Lei YANG Jianke DU J.S.YANG 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2022年第8期1171-1186,共16页
We study the bending of a two-layer piezoelectric semiconductor plate(bimorph).The macroscopic theory of piezoelectric semiconductors is employed.A set of two-dimensional plate equations is derived from the three-dime... We study the bending of a two-layer piezoelectric semiconductor plate(bimorph).The macroscopic theory of piezoelectric semiconductors is employed.A set of two-dimensional plate equations is derived from the three-dimensional equations.The plate equations exhibit direct couplings among bending,electric polarization along the plate thickness,and mobile charges.In the case of pure bending,a combination of physical and geometric parameters is identified which characterizes the strength of the interaction between the mechanical load and the distribution of mobile charges.In the bending of a rectangular plate under a distributed transverse mechanical load,it is shown that mobile charge distributions and potential barriers/wells develop in the plate.When the mechanical load is local and self-balanced,the induced carrier distributions and potential barriers/wells are also localized near the loading area.The results are fundamentally useful for mechanically manipulating mobile charges in piezoelectric semiconductor devices. 展开更多
关键词 PIEZOELECTRIC PLATE BIMORPH BENDING piezotronic
下载PDF
Nano-frictional mechano-reinforcing porous nanowires scaffolds
2
作者 Licheng HUA Conghu HU +6 位作者 Jingkang ZHANG Jin LI Chenjie GU Bin HUANG Guangyong LI Jianke DU Wanlin GUO 《Friction》 SCIE EI CAS CSCD 2024年第5期968-980,共13页
Artificial biomaterials with dynamic mechano-responsive behaviors similar to those of biological tissues have been drawing great attention.In this study,we report a TiO_(2)-based nanowire(TiO_(2)NWs)scaffolds,which ex... Artificial biomaterials with dynamic mechano-responsive behaviors similar to those of biological tissues have been drawing great attention.In this study,we report a TiO_(2)-based nanowire(TiO_(2)NWs)scaffolds,which exhibit dynamic mechano-responsive behaviors varying with the number and amplitude of nano-deformation cycles.It is found that the elastic and adhesive forces in the TiO_(2)NWs scaffolds can increase significantly after multiple cycles of nano-deformation.Further nanofriction experiments show the triboelectric effect of increasing elastic and adhesive forces during the nano-deformation cycles of TiO_(2)NWs scaffolds.These properties allow the TiO_(2)NW scaffolds to be designed and applied as intelligent artificial biomaterials to simulate biological tissues in the future. 展开更多
关键词 TiO_(2)NWs scaffolds nano-deformation mechano-reinforcing triboelectric effect intelligent artificial biomaterials
原文传递
Epidermal restriction confers robustness to organ shapes 被引量:2
3
作者 LV wen Zhou Fei Du +4 位作者 Shiliang Feng Jinrong Hu Shouqin Lv Mian Long Yuling Jiao 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2020年第12期1853-1867,共15页
The shape of comparable tissues and organs is consistent among individuals of a given species,but how this consistency or robustness is achieved remains an open question.The interaction between morphogenetic factors d... The shape of comparable tissues and organs is consistent among individuals of a given species,but how this consistency or robustness is achieved remains an open question.The interaction between morphogenetic factors determines organ formation and subsequent shaping,which is ultimately a mechanical process.Using a computational approach,we show that the epidermal layer is essential for the robustness of organ geometry control.Specifically,proper epidermal restriction allows organ asymmetry maintenance,and the tensile epidermal layer is sufficient to suppress local variability in growth,leading to shape robustness.The model explains the enhanced organ shape variations in epidermal mutant plants.In addition,differences in the patterns of epidermal restriction may underlie the initial establishment of organ asymmetry.Our results show that epidermal restriction can answer the longstanding question of how cellular growth noise is averaged to produce precise organ shapes,and the findings also shed light on organ asymmetry establishment. 展开更多
关键词 process. shape PRECISE
原文传递
Thermally controlled large deformation in temperaturesensitive hydrogels bilayers
4
作者 Jianying Hu Nan Jiang Jianke Du 《International Journal of Smart and Nano Materials》 SCIE EI 2021年第4期450-471,共22页
The present work investigates the thermally controlled deformation characteristics in temperature-sensitive hydrogels bilayers.The free energy density for temperature-sensitive hydrogels is modified,upon which the fin... The present work investigates the thermally controlled deformation characteristics in temperature-sensitive hydrogels bilayers.The free energy density for temperature-sensitive hydrogels is modified,upon which the finite element model is developed and implemented through user-defined material subroutine UHYPER in the commercial software ABAQUS.The modified UHYPER implementation allows for more vividly depicting the continuous deformation in phase temperature region for temperature-sensitive hydrogels.Several thermally controlled cases of temperature-sensitive hydrogel including grippers,self-folding boxes,thermally driven origami are presented to illustrate a wide array of complex interesting applications or phenomena.Furthermore,we develop a simple model to theoretically calculate the bending angle of the temperature-sensitive hydrogel bilayers,which has been validated by the finite element simulation results.Our study can provide more insights for optimal design in thermally controlled hydrogels structures. 展开更多
关键词 Temperature-sensitive hydrogels thermally controlled deformation swelling-induced bending
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部