When using shape memory materials into active disassembly of actual electronic products, because the elastic modulus of shape memory materials is affected by the temperature is relatively large, therefore, the main di...When using shape memory materials into active disassembly of actual electronic products, because the elastic modulus of shape memory materials is affected by the temperature is relatively large, therefore, the main difference of environmental reliability between active disassembly products and common products is the impact of collision and vibration under different temperature. Establishing three-dimensional analysis model, comparing the impact of collision and vibration of mobile phone shells which are made up of PVC materials after casting & radiation and PC/ABS materials under different temperature. Analyzing the reliability of mobile phone under different temperature and optimizing its structure according to data of testing.展开更多
An aperture design technique using multi-step amplitude quantization for two-dimensional solid-state active phased arrays to achieve low sidelobe is described. It can be applied to antennas with arbitrary complex aper...An aperture design technique using multi-step amplitude quantization for two-dimensional solid-state active phased arrays to achieve low sidelobe is described. It can be applied to antennas with arbitrary complex aperture. Also, the gain drop and sidelobe degradation due to random amplitude and phase errors and element (or T/R module) failures are investigated.展开更多
Mimetic enzymes are devised as alternates or supplements of natural enzymes in broad fields but regulating their activities in a switchable manner remains challenging.Herein,we proposed an enzymatic self-assembly/disa...Mimetic enzymes are devised as alternates or supplements of natural enzymes in broad fields but regulating their activities in a switchable manner remains challenging.Herein,we proposed an enzymatic self-assembly/disassembly strategy to address this issue.A peptide molecule Nap FFEYIH(YH) was rationally designed which,after self-assembling into nanofibers,lined up the histidine moieties to form active hydrolysis centers for mimicking hydrolase activity.Enzymatic dephosphorylation of Nap FFEYp IH(Yp H) by alkaline phosphatase to yield YH also turned “ON” the hydrolase activity.In turn,phosphorylation of YH by phosphokinase epidermal growth factor receptor to yield Yp H disassembled the nanofibers and thus turned the activity “OFF”.As such,the “ON”/“OFF” of the mimetic hydrolase activities could be regulated under physiological conditions through ALP/EGFR-mediated self-assembly/disassembly of histidine nanofibers.This work provides a feasible strategy for the on-demand fabrication of artificial enzymes with controllable and superior activities.展开更多
随着技术的不断进步,产品的更新换代不断加快,废弃产品的回收问题得到越来越多的关注。制约产品回收发展的一个主要因素是产品的拆卸效率低下,成本高昂。智能材料主动拆卸技术(Active disassembly using smart materials,ADSM)就是解决...随着技术的不断进步,产品的更新换代不断加快,废弃产品的回收问题得到越来越多的关注。制约产品回收发展的一个主要因素是产品的拆卸效率低下,成本高昂。智能材料主动拆卸技术(Active disassembly using smart materials,ADSM)就是解决此难题的一种方法。ADSM适用于以塑料为主的产品以及含有可重用零部件的电子电器产品,尤其是用传统拆卸方法难以拆卸或拆卸效率低下,回收成本高昂的小型产品。介绍智能材料主动拆卸的原理及特点,给出基于智能材料主动拆卸的产品设计方法,并提出主动拆卸结构和主动拆卸产品的设计准则。利用这些设计方法和准则对遥控器产品进行重新设计。通过对重新设计后的遥控器进行的主动拆卸试验表明,其拆卸效率明显提高,验证基于智能材料主动拆卸的产品设计方法的可行性与优越性。展开更多
文摘When using shape memory materials into active disassembly of actual electronic products, because the elastic modulus of shape memory materials is affected by the temperature is relatively large, therefore, the main difference of environmental reliability between active disassembly products and common products is the impact of collision and vibration under different temperature. Establishing three-dimensional analysis model, comparing the impact of collision and vibration of mobile phone shells which are made up of PVC materials after casting & radiation and PC/ABS materials under different temperature. Analyzing the reliability of mobile phone under different temperature and optimizing its structure according to data of testing.
文摘An aperture design technique using multi-step amplitude quantization for two-dimensional solid-state active phased arrays to achieve low sidelobe is described. It can be applied to antennas with arbitrary complex aperture. Also, the gain drop and sidelobe degradation due to random amplitude and phase errors and element (or T/R module) failures are investigated.
基金supported by the National Natural Science Foundation of China (22234002,22204019,82172097)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX22_0245)。
文摘Mimetic enzymes are devised as alternates or supplements of natural enzymes in broad fields but regulating their activities in a switchable manner remains challenging.Herein,we proposed an enzymatic self-assembly/disassembly strategy to address this issue.A peptide molecule Nap FFEYIH(YH) was rationally designed which,after self-assembling into nanofibers,lined up the histidine moieties to form active hydrolysis centers for mimicking hydrolase activity.Enzymatic dephosphorylation of Nap FFEYp IH(Yp H) by alkaline phosphatase to yield YH also turned “ON” the hydrolase activity.In turn,phosphorylation of YH by phosphokinase epidermal growth factor receptor to yield Yp H disassembled the nanofibers and thus turned the activity “OFF”.As such,the “ON”/“OFF” of the mimetic hydrolase activities could be regulated under physiological conditions through ALP/EGFR-mediated self-assembly/disassembly of histidine nanofibers.This work provides a feasible strategy for the on-demand fabrication of artificial enzymes with controllable and superior activities.
文摘随着技术的不断进步,产品的更新换代不断加快,废弃产品的回收问题得到越来越多的关注。制约产品回收发展的一个主要因素是产品的拆卸效率低下,成本高昂。智能材料主动拆卸技术(Active disassembly using smart materials,ADSM)就是解决此难题的一种方法。ADSM适用于以塑料为主的产品以及含有可重用零部件的电子电器产品,尤其是用传统拆卸方法难以拆卸或拆卸效率低下,回收成本高昂的小型产品。介绍智能材料主动拆卸的原理及特点,给出基于智能材料主动拆卸的产品设计方法,并提出主动拆卸结构和主动拆卸产品的设计准则。利用这些设计方法和准则对遥控器产品进行重新设计。通过对重新设计后的遥控器进行的主动拆卸试验表明,其拆卸效率明显提高,验证基于智能材料主动拆卸的产品设计方法的可行性与优越性。
