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| 1 | A thermal actuated switchable dry adhesive with high reversibility for transfer printing显示文摘Transfer printing based on switchable adhesive that heterogeneously integrates materials is essential to develop novel electronic systems,such as flexible electronics and micro LED displays.Here,we report a robust design of a thermal actuated switchable dry adhesive,which features a stiff sphere embedded in a thermally responsive shape memory polymer(SMP)substrate and encapsulated by an elastomeric membrane.This construct bypasses the unfavorable micro-and nano-fabrication processes and yields an adhesion switchability of over1000 by combining the peel-rate dependent effect of the elastomeric membrane and the thermal actuation of the sub-surface embedded stiff sphere.Experimental and numerical studies reveal the underlying thermal actuated mechanism and provide insights into the design and operation of the switchable adhesive.Demonstrations of this concept in stamps for transfer printing of fragile objects,such as silicon wafers,silicon chips,and inorganic micro-LED chips,onto challenging non-adhesive surfaces illustrate its potential in heterogeneous material integration applications,such as flexible electronics manufacturing and deterministic assembly. | Shun Zhang Hongyu Luo Suhao Wang Zhou Chen Shuang Nie Changying Liu Jizhou Song | 2021 | International Journal of Extreme Manufacturing2021，3，3： | 2 |
| 2 | Phylogenetic and Expression Analyses of With-No-Lysine Kinase Genes Reveal Novel Gene Family Diversity in Fruit Trees显示文摘With-No-Lysine kinases(WNK) have been reported to be associated with plant growth regulation in Arabidopsis, soybean, and rice, but little is known of their roles in fruits. In this study, a total of 114 WNK genes were identified from 8 fruit trees species, and these WNK genes belonged to 2 classes(I and II) that respectively contain 4(A, B, C, D) and 2 groups(E, F). The WNK genes had variable exon-intron structures and were randomly distributed among most chromosomes of each genus. The expression levels of six of the 18 WNK genes in peach were almost undetectable in fruits, suggesting that they may not be associated with fruit development and ripening. Of the other 12 WNK genes, PpWNK.B1 exhibited stronger stability of expression levels than the best reference genes reported previously in fruits from two peach cultivars. These results suggested that PpWNK.B1 could be a reliable reference gene for gene expression studies of peach fruit. Moreover, qRT-PCR assays yielded evidence that when using single reference gene as internal control, mistakes were more possible, indicating that the use of three reference genes is necessary for gene expression studies. Based on the gene expression profiles validated by qRT-PCR, PpWNK.A1 is predicted to likely be involved in fruit ripening, while PpWNK.A2 and PpWNK.E3.1 are likely associated with early fruit development. The present study represented the WNK genes in fruits, and it will be a valuable resource in continuing investigation of gene regulation network during fruit development and ripening. | Suhao Cao Pingping Hao Weishen Shu Guoming Wang Zhihua Xie Chao Gu Shaoling Zhang | 2019 | Horticultural Plant Journal2019，5，2： | 1 |
| 3 | Measurement of viscoelastic properties of injured mouse brain after controlled cortical impact显示文摘Mechanical properties of brain tissue can provide vital information for understanding the mechanism of traumatic brain injury(TBI).As mouse models were commonly adopted for TBI studies,a method to produce injury to the brain and characterize the injured tissue is desired.In this paper,a complete workflow of TBI induction,sample preparation,and biomechanical characterization is presented for measurement of the injured brain tissue.A controlled cortical impact device was used to induce injury to the brain.By setting the angle,speed,and position of the impact,the level of brain injuries could be controlled.Viscoelastic properties of both injured and non-injured brain tissues were measured using a ramp-hold indentation test.Regions of interests(ROIs)were tested and compared to contralateral corresponding counterparts.Methods introduced in this paper could be easily extended to produce and test a variety of other injured soft biological tissues. | Yu Chen Suhao Qiu Cheng Wang Xiaowei Li Yaohui Tang Yuan Feng | 2020 | Biophysics Reports2020，6，4： | 0 |
| 4 | Realization of a full hierarchical topology in hexagonal bilayer acoustic crystals显示文摘Recently, there has been significant research interest in higher-order topological states within artificial lattices, primarily due to their potential for manipulating waves. In this study, we focus on a three-dimensional hexagonal bilayer acoustic crystal with rotation, layer, and translation degrees of freedom. By systematically reducing the crystal symmetries, we realize a full hierarchical structure of the higher-order topological states. This hierarchical progression begins with the valley-induced twodimensional surface state, followed by the one-dimensional hinge state that arises from the topological obstruction, and ultimately culminating in the zero-dimensional corner state resulting from the edge polarization mechanism. Through finite element simulations and numerical calculations of topological invariants, we confirm the topological origins of all these hierarchical states. Moreover, we successfully verified the full hierarchical topology by directly probing the acoustic field within a finitesized three-dimensional sample. This study offers novel perspectives on the fundamental research pertaining to wave modulation and the intelligent control of sound fields. | Suhao Wang Han Jia Xinghang Yang Peng Zhang Yunhan Yang Yuzhen Yang Xiaodong Li | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，10： | 0 |
| 5 | Soft,stretchable thermal protective substrates for wearable electronics显示文摘Wearable electronics have continued to attract the attention of researchers and clinicians due to their great potential in medical applications.During their operations,the undesired heating may cause thermal discomfort or damage to skin.Seeking materials and structures for advanced thermal protection has become an urgent issue.Here,we report a soft,stretchable thermal protective substrate for wearable electronics with remarkable thermal insulating performance,mechanical compliance and stretchability.The thermal protective substrate features a composite design of the widely used polymeric material polydimethylsiloxane with embedded heat absorbing microspheres,consisting of phase change materials encapsulated inside the resin shell.Experimental and numerical studies show that the thermal protective substrate could be subjected to complex deformations over 150% and could reduce the peak skin temperature increase by 82% or higher under optimizations.In vivo demonstration of this concept on the mouse skin illustrates its unusual thermal protection capability for wearable thermal management. | Shuang Nie Min Cai Huang Yang Liyin Shen Suhao Wang Yang Zhu Jizhou Song | 2022 | npj Flexible Electronics2022，6，1： | 0 |
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