|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Modeling and optimal design of multilayer thermal cantilever microactuators显示文摘A model of curvature and tip deflection of multilayer thermal cantilever actuators is derived.The sim-plified expression received from the model avoids inverting complex matrices enhances understanding and makes it easier to optimize the structure parameters.Experiment is performed,the modeled and experimental results demonstrate the validity of the model,and it also indicates that Young's module makes great contribution to the deflection;therefore,thin layers cannot be ignored arbitrarily. | FU JianYu CHEN DaPeng YE TianChun JIAO BinBin OU Yi | 2009 | Science China(Technological Sciences)2009，52，5： | 5 |
| 2 | Mechanics of flexible and stretchable piezoelectrics for energy harvesting显示文摘As rapid development in wearable/implantable electronic devices benefit human life in daily health monitoring and disease treatment medically, all kinds of flexible and/or stretchable electronic devices are booming, together with which is the demanding of energy supply with similar mechanical property. Due to its ability in converting mechanical energy lying in human body into electric energy, energy harvesters based on piezoelectric materials are promising for applications in wearable/implantable device's energy supply in a renewable, clean and life-long way. Here the mechanics of traditional piezoelectrics in energy harvesting is reviewed, including why piezoelectricity is the choice for minor energy harvesting to power the implantable/wearable electronics and how. Different kinds of up to date flexible piezoelectric devices for energy harvesting are introduced, such as nanogenerators based on Zn O and thin and conformal energy harvester based on PZT. A detailed theoretical model of the flexible thin film energy harvester based on PZT nanoribbons is summarized, together with the in vivo demonstration of energy harvesting by integrating it with swine heart. Then the initial researches on stretchable energy harvesters based on piezoelectric material in wavy or serpentine configuration are introduced as well. | CHEN Ying LU BingWei OU DaPeng FENG Xue | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，9： | 5 |
| 3 | Controlled mechanical assembly of complex 3D mesostructures and strain sensors by tensile buckling显示文摘Recent research establishes methods of controlled mechanical assembly as versatile routes to three-dimensional(3D)mesostructures from patterned 2D films,with demonstrated applicability to a broad range of materials(e.g.,semiconductors,polymers,metals,and their combinations)and length scales(e.g.,from sub-microscale to centimeter scale).Previously reported schemes use pre-stretched elastomeric substrates as assembly platforms to induce compressive buckling of 2D precursor structures,thereby enabling their controlled transformation into 3D architectures.Here,we introduce tensile buckling as a different,complementary strategy that bypasses the need for a pre-stretched platform,thereby simplifying the assembly process and opening routes to additional classes of 3D geometries unobtainable with compressive buckling.A few basic principles in mechanics serve as guidelines for the design of 2D precursor structures that achieve large out-of-plane motions and associated 3D transformations due to tensile buckling.Experimental and computational studies of nearly 20 examples demonstrate the utility of this approach in the assembly of complex 3D mesostructures with characteristic dimensions from micron to millimeter scales.The results also establish the use of nonlinear mechanics modeling as a mechanism for designing systems that yield desired 3D geometries.A strain sensor that offers visible readout and large detectable strain range through a collection of mechanically triggered electrical switches and LEDs serves as an application example. | Xiaogang Guo Xueju Wang Dapeng Ou Jilong Ye Wenbo Pang Yonggang Huang John A.Rogers Yihui Zhang | 2018 | npj Flexible Electronics2018，2，1： | 4 |
| 4 | Pure aromatic hydrocarbons with meta-linked phenyl-core and perihedral fluorene substitutions with/without inert groups of tert-butyl: bipolar hosts for blue phosphorescence显示文摘Two pure hydrocarbon molecules of l,3,5-tris(9-phenyl-9H-fluoren-9-yl)benzene(mTPFB)and l,3,5-tris(2-tert-butyl-9-phenyl-9H-fluoren-9-yl)benzene(tBu-mTPFB)were synthesized.Due to the conjugation blocked connection mode and rigid/bulky substitutions,these two materials possess high triplet energy,enabling them as good hosts for blue phosphor in PhOLEDs.By studying their thermal,electrochemical,electronic absorption and photoluminescent properties,it was found that the influence of the inert tert-butyl group on material photoelectrical properties is negligible.For instance,mTPFB and tBu-mTPFB showed very similar absorption and emission profiles,with almost the same bandgap,triplet energy and energy levels.However,the encapsulation of tert-butyl on the 2-position of 9-phenylfluorene enhanced material thermal stability.Most importantly,carrier transport properties were improved dramatically,as proved by the mono carrier device.Blue phosphorescent OLEDs hosted by tBu-mTPFB showed external quantum efficiency of 15.2%and current efficiency of 23.0 cd/A,which were much higher than that of the OLEDs based on mTPFB with the analogous structure. | Gaowen Liu Chuanjun Wang Baoxiu Mi Minjie Zhuo Changjin Ou Jie Wang Shuchao Zheng Juan Song Zhiqiang Gao Dapeng Cao | 2017 | Science China Chemistry2017，60，2： | 0 |
| 5 | Nanopillar-forest based surface-enhanced Raman scattering substrates显示文摘In this work,nanopillar-forest based surface-enhanced Raman scattering substrates were fabricated using a novel approach.The key technique of the approach is taking advantage of convexes on Poly-Si surfaces as support structures in sidewall technology.The tip-diameters of the fabricated nanopillars are from 5 to 10 nm,heights are of several microns,and density of the nanopillar-based forests is around 20/μm2.In these nanopillar forests,there are plenty of nanoscale gaps.When covered with a thin layer of noble metal,the nanopillar forests exhibit a high SERS-active capability.Primary measurement results demonstrate that the nanopillar-forest based SERS substrates have an enhancement factor of an order of 4.62×106.It is expected that such SERS substrates may have applications in biological monitoring and chemical detection. | BAO AiDa MAO HaiYang XIONG JiJun CHEN ZhuoJie OU Wen CHEN DaPeng | 2014 | Science China(Information Sciences)2014，57，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员