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Reprogrammable 3D Mesostructures Through Compressive Buckling of Thin Films with Prestrained Shape Memory Polymer

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Acta Mechanica Solida Sinica 2018年第5期31卷 589-598页

作者： Xiaogang Guo Zheng Xu Fan Zhang Xueju Wang Yanyang Zi John A. rogers Yonggang Huang Yihui Zhang Department of Engineering Mechanics Center for Mechanics and Materials and Center for Flexible Electronics Technology AML Tsinghua University Beijing 100084 China State Key Laboratory for Manufacturing and Systems Engineering School of Mechanical Engineering Xi'an Jiaotong University Xi'an 710049 China Simpson Querrey Institute and Feinberg Medical School Center for Bio-Integrated Electronics Northwestern University Evanston IL 60208 USA Departments of Materials Science and Engineering Biomedical Engineering Chemistry Mechanical Engineering Electrical Engineering and Computer Science and Neurological Surgery Center for Bio-Integrated Electronics Simpson Querrey Institute for Nano/biotechnology Northwestern University Evanston IL 60208 USA Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering Center for Bio-Integrated Electronics Northwestern University Evanston IL 60208 USA

The mechanically guided assembly that relies on the compressive buckling of strate- gically patterned 2D thin films represents a robust route to complex 3D mesostructures in advanced materials and even functional micro-devices. Based on this approach, formation of complex 3D configurations with suspended curvy features or hierarchical geometries remains a challenge. In this paper, we incorporate the prestrained shape memory polymer in the 2D precur- sor design to enable local rolling deformations after the mechanical assembly through compressive buckling. A theoretical model captures quantitatively the effect of key design parameters on local rolling deformations. The combination of precisely controlled global buckling and local rolling expands substantially the range of accessible 3D configurations. The combined experimental and theoretical studies over a dozen of examples demonstrate the utility of the proposed strategy in achieving complex reprogrammable 3D mesostructures.

关键词： Mechanically guided 3D assembly Reprogrammable 3D mesostructures Shapememory polymer Buckling Rolling

MECHANICS ANALYSIS OF TWO-DIMENSIONALLY PRESTRAINED ELASTOMERIC THIN FILM FOR STRETCHABLE ELECTRONICS

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Acta Mechanica Solida Sinica 2010年第6期23卷 592-599页

作者： Ming Li JianUang Xiao Jian Wu Rak-Hwan Kim Zhan Kang Yonggang Huang John A. rogers State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology Dalian 116024 China Departments of Civil and Environmental Engineering and Mechanical Engineering Northwestern University Evanston IL 60208 USA Department of Materials Science and Engineering Beckman Institute for Advanced Science and Technology and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana IL 61801 USA

Various methods have been developed to fabricate highly stretchable electronics. Recent studies show that over 100% two dimensional stretchability can be achieved by mesh structure of brittle functioning devices interconnected with serpentine bridges. Kim et al show that pressing down an inflated elastomeric thin film during transfer printing introduces two di- mensional prestrain, and therefore further improves the system stretchability. This paper gives a theoretical study of this process, through both analytical and numerical approaches. Simple analytical solutions are obtained for meridional and circumferential strains in the thin film, as well as the maximum strain in device islands, which all agree reasonably well with finite element analysis.

关键词： stretchable electronics shell soft materials

Initiation of the Primate Genome Project

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Zoological Research 2022年第2期43卷 147-149页

作者： Dong-Dong Wu Xiao-Guang Qi Li Yu Ming Li Zhi-Jin Liu Anne DYoder Christian Roos Takashi Hayakawa Jeffrey rogers Tomas Marques-Bonet Bing Su Yong-Gang Yao Ya-Ping Zhang Guojie Zhang State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China National Resource Center for Non-Human Primates Kunming Primate Research Centerand National Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility)Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China Kunming Natural History Museum of Zoology Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingYunnan 650223China Shaanxi Key Laboratory for Animal Conservation College of Life SciencesNorthwest UniversityXi’anShaanxi 710069China State Key Laboratory for Conservation and Utilization of Bio-Resource in Yunnan Yunnan UniversityKunmingYunnan 650091China CAS Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Department of Biology Duke UniversityDurhamNC 27708USA Gene Bank of Primates and Primate Genetics Laboratory German Primate CenterLeibniz Institute for Primate ResearchGöttingen 37077Germany Faculty of Environmental Earth Science Hokkaido UniversitySapporoHokkaido 060-0810Japan Japan Monkey Centre InuyamaAichi 484-0081Japan Human Genome Sequencing Center Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTX 77030USA Institute of Evolutionary Biology(UPF-CSIC) PRBBDr.Aiguader 88Barcelona 08003Spain Catalan Institution of Research and Advanced Studies(ICREA) Passeig de Lluis Companys23Barcelona 08010Spain CNAG-CRG Centre for Genomic Regulation(CRG)Barcelona Institute of Science and Technology(BIST)Baldiri i Reixac 4Barcelona 08028Spain Institut Catalade Paleontologia Miquel Crusafont Universitat Autonoma de BarcelonaEdifici ICTA-ICPc/Columnes s/nCerdanyola del VallèsBarcelona 08193Spain Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese

A crucial step for understanding human evolution is to identify the genomic changes that occurred during primate evolution,thus allowing investigators to reconstruct the ancestral states preceding the human *** the past several decades,the primate clade has been a research focus in genome sequencing due to its unique phylogenetic position and key importance.

关键词： Genome evolution condition.

Optical Properties of Laterally Aligned Si Nanowires for Transparent Electronics Applications

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Nano Research 2011年第9期4卷 817-823页

作者： Dong Hyun Lee Jaeseok Yi Won Woo Lee Ungyu Paik John A. rogers Won II Park Division of Materials Science and Engineering Hanyang University Seoul 133-791 Korea Department of Energy Engineering Hanyang University Seoul 133-791 Korea Department of Materials Science and Engineering Department of Chemistry Department of Mechanical Science and Engineering Beckman Institute and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA

我们调查了 nanowire (SiNW ) 穿以便在透明电子学探索他们的潜在的适用性的旁边地排列的 Si 的光性质。SiNW 数组展出了好光透明性在可见光谱每 10 m 为 2025 的 NW 密度与 90% 的发射度变化。另外，极化依赖者大小在取决于在事件光和 ... 详细信息

我们调查了 nanowire (SiNW ) 穿以便在透明电子学探索他们的潜在的适用性的旁边地排列的 Si 的光性质。SiNW 数组展出了好光透明性在可见光谱每 10 m 为 2025 的 NW 密度与 90% 的发射度变化。另外，极化依赖者大小在取决于在事件光和 NW 轴的极化之间的角度的 80%95% 的范围在发射度揭示了一个变化。用 SiNWs，我们证明透明晶体管展出好光透明性(比 80% 大) 并且显示出的典型 p 类型 SiNW 晶体管特征。

关键词：硅纳米线阵列光学性质电子应用光学透明性晶体管特性透光率适用性水密度

A Two-Step Growth Curve: Approach to the von Bertalanffy and Gompertz Equations

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Advances in Pure Mathematics 2016年第5期6卷 321-330页

作者： Laura rogers-Bennett Donald W. rogers California Department of Fish and Wildlife and Karen C. Drayer Wildlife Health Center UC Davis CA USA Bodega Marine Laboratory Bodega Bay CA USA Chemistry Department Long Island University Brooklyn NY USA Friday Harbor Laboratories Whiteley Center University of Washington Friday Harbor WA USA

Many curves have been proposed and debated to model individual growth of marine invertebrates. Broadly, they fall into two classes, first order (e.g. von Bertalanffy) and sigmoidal (e.g. Gompertz). We provide an innovative approach which demonstrates that the growth curves are not mutually exclusive but that either may arise from a simple three-stage growth model with two steps (k1 and k2) depending on the ratio of the growth parameters . The new approach predicts sigmoidal growth when is close to 1, but if either growth from stage A to stage B or B to C is fast relative to the other, the slower of the two steps becomes the growth limiting step and the model reduces to first order growth. The resulting curves indicate that there is a substantial difference in the estimated size at time t during the period of active growth. This novel two-step rate model generates a growth surface that allows for changes in the rate parameters over time as reflected in the new parameter n(t) = k1(t) - k2(t). The added degree of freedom brings about individual growth trajectories across the growth surface that is not easily mapped using conventional growth modeling techniques. This two (or more) stage growth model yields a growth surface that allows for a wide range of growth trajectories, accommodating staged growth, growth lags, as well as indeterminate growth and can help resolve debates as to which growth curves should be used to model animal growth. This flexibility can improve estimates of growth parameters used in population models influencing model outcomes and ultimately management decisions.=

关键词： Growth Model Growth Surface Rate Equation Staged Growth Population Models

Susceptibility of field populations of sugarcane borer from non-Bt and Bt maize plants to five individual Cry toxins

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Insect Science 2012年第5期19卷 570-578页

作者： Fangneng Huang Mukti N. Ghimire B. rogers Leonard Yu-Cheng Zhu Graham P. Head Department of Entomology Louisiana State University Agricultural Center Baton Rouge Macon Ridge Research Station Louisiana State University Agricultural Center Winnsboro Louisiana Jamie Whitten Delta States Research Center USDA-ARS Stoneville Mississippi Monsanto Company St. Louis Missouri USA

Sugarcane borer, Diatraea saccharalis （E）, is a major target of transgenic maize expressing Bacillus thuringiensis （Bt） proteins in South America and the US mid- south region. Resistance development in target pest populations is a major threat to the sustainable use of Bt crops. In our field trials in 2009, a significant number of live borers and plant injury fi＇om D. saccharalis were observed in an experimental SmartStaxTM maize line. The objective of this study was to assess the relative susceptibility of two field popula- tions ofD. saccharalis collected from non-Bt and Bt maize plants containing SmartStaxTM traits to five individual Cry proteins. The five Bt proteins included two proteins （Cry 1A. 105 and Cry2Ab2） that were expressed in SmartStaxTM maize plants and three other common Bt proteins （Cry 1Aa, Cry 1Ab and Cry l Ac） that were not produced in SmartStaxTM. Larval mortality and growth inhibition on Bt diet of the fourth generation after field collections were evaluated 7 days after release of neonates on the diet surface. The laboratory bioassays showed that 50% lethal concentration （LCs0） values for CrylA. 105 and Cry2Ab2 for the population originated from Bt plants were 3.55- and 1.34-fold greater, respectively, than those of the population collected from non-Bt plants. In contrast, relative to the popula- tion from non-Bt plants, the LCs0 of the population sampled from Bt plants were 3.85-, 2.5- and 1.64-fold more sensitive to CrylAa, CrylAb and CrylAc, respectively. The re- sults did not provide clear evidence to conclude that the observed field survival of D. saccharalis on Bt plants was associated with increased levels of resistance.

关键词： Bacillus thuringiensis maize stalk borer susceptibility transgenic crops

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由心出发的设计,克里斯托弗·约翰·罗杰斯

艺术与设计 2022年第1期11卷 168-171页

作者：吉丽 CHRISTOPHER JOHN rogers(图) 不详

近期,CFDA时尚大奖(CFDA Fashion Awards)公布2021年获奖名单,其中美国年度女装设计师奖(American Womenswear Designer of the Year)获奖者是克里斯托弗·约翰·罗杰斯(Christopher John rogers)。克里斯托弗·约翰·罗杰斯曾就读于萨... 详细信息

近期,CFDA时尚大奖(CFDA Fashion Awards)公布2021年获奖名单,其中美国年度女装设计师奖(American Womenswear Designer of the Year)获奖者是克里斯托弗·约翰·罗杰斯(Christopher John rogers)。克里斯托弗·约翰·罗杰斯曾就读于萨凡纳艺术与设计学院,上学期间成立了品牌CJR。

关键词：克里斯托弗约翰·罗杰斯艺术与设计

Acrolein scavenger dimercaprol offers neuroprotection in an animal model of Parkinson’s disease:implication of acrolein and TRPA1

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Translational Neurodegeneration 2021年第2期10卷 151-165页

作者： Liangqin Shi Yazhou Lin Yucheng Jiao Seth AHerr Jonathan Tang Edmond rogers Zhengli Chen Riyi Shi College of Basic Medicine Chengdu University of Traditional Chinese MedicineChengdu 610075China Center for Paralysis Research&Department of Basic Medical Sciences College of Veterinary MedicinePurdue UniversityWest LafayetteIN 47907USA Laboratory of Animal Disease Model College of Veterinary MedicineSichuan Agricultural UniversityChengdu 625014China Department of Orthopedics Ruijin HospitalSchool of MedicineShanghai Jiao Tong UniversityInstitute of Trauma and OrthopedicsShanghai 200025China Weldon School of Biomedical Engineering Purdue University West LafayetteWest LafayetteIN 47907USA

Background:The mechanisms underlying lesions of dopaminergic(DA)neurons,an essential pathology of Parkinson’s disease(PD),are largely unknown,although oxidative stress is recognized as a key *** have previously shown that the pro-oxidative aldehyde acrolein is a critical factor in PD pathology,and that acrolein scavenger hydralazine can reduce the elevated acrolein,mitigate DA neuron death,and alleviate motor deficits in a 6-hydroxydopamine(6-OHDA)rat *** such,we hypothesize that a structurally distinct acrolein scavenger,dimercaprol(DP),can also offer neuroprotection and behavioral ***:DP was used to lower the elevated levels of acrolein in the basal ganglia of 6-OHDA *** acrolein levels and related pathologies were measured by *** and behavioral effects of 6-OHDA injections and DP treatment were examined using the open field test and rotarod *** was assessed using mechanical allodynia,cold hypersensitivity,and plantar ***,the effects of DP were assessed in vitro on SK-N-SH dopaminergic cells exposed to ***:DP reduced acrolein and reversed the upregulation of pain-sensing transient receptor potential ankyrin 1(TRPA1)channels in the substantia nigra,striatum,and *** also mitigated both motor and sensory deficits typical of *** addition,DP lowered acrolein and protected DA-like cells in ***’s ability to upregulate TRPA1 was also verified in vitro using cell ***:These results further elucidated the acrolein-mediated pathogenesis and reinforced the critical role of acrolein in PD while providing strong arguments for anti-acrolein treatments as a novel and feasible strategy to combat neurodegeneration in *** the extensive involvement of acrolein in various nervous system illnesses and beyond,anti-acrolein strategies may have wide applications and broad impacts on human health.

关键词： Oxidative stress Parkinson’s disease Neuroinflammation Acrolein TRPA1 Dimercaprol

Switchable carbamate coagulants to improve recycling ionic liquid from biomass solutions

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Green Chemical Engineering 2021年第4期2卷 384-391页

作者： Julia L.Shamshina Ying Qin Ken Belmore Daniel T.Daly Robin D.rogers Fiber and Biopolymer Research Institute Department of Plant and Soil ScienceTexas Tech UniversityLubbockTX79409USA Alabama Institute for Manufacturing Excellence The University of AlabamaTuscaloosaAL35487USA Department of Chemistry and Biochemistry The University of AlabamaTuscaloosaAL35487USA College of Arts&Sciences The University of AlabamaTuscaloosaAL35487USA Solutions Inc.P.O.Box 2206TuscaloosaAL35403USA

A reversible amine-carbamate approach has been developed to reduce the use of antisolvents such as water in the coagulation of biopolymers from ionic liquid(IL)solution and thus improve the economy of IL *** and chitin were recovered from 1-ethyl-3-methylimidazolium acetate([C_(2)mim][OAc])solution by introducing the miscible amines triethanolamine(TEA),ethylenediamine(EDA),or butylamine(BA)and bubbling CO_(2) at 40℃ and atmospheric pressure through the solutions to form carbamate salts in situ which resulted in biopolymer *** gave the best results because of its low boiling point and low viscosity,which benefited both biopolymer recovery and IL *** films and fibers could be formed by extrusion of an MCC/[C_(2)mim]-[OAc]solution into a coagulating bath comprised of a 1:1 M mixture of[C_(2)mim][OAc]and butylammonium butylcarbamate(BA-carbamate).The cellulose,IL,amine,and CO_(2) were easily separated,although the cellulose recovered required some water washings to remove traces of *** to 96.4%of the[C_(2)mim][OAc]could be recovered,76.2%from the coagulation bath and 20.2%from the water *** recycled IL was suitable for another cycle of cellulose dissolution and extrusion and 84.6%of the IL used for the second cycle was *** further work is needed,not the least of which will be reducing the amount of water needed for washing steps,some promising features of this process point the way for new directions for more economically viable IL recycling processes in biomass treatment with ILs.

关键词： Carbamate Ionic liquid Recovery Switchable Coagulation Biopolymers Carbamates IL recycle