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Droplet Dynamics: Dynamically Actuated Liquid‐Infused Poroelastic Film with Precise Control over Droplet Dynamics (Adv. Funct. Mater. 39/2018)

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Advanced Functional materials 2018年第39期28卷

作者： Inkyu Oh Christoph Keplinger Jiaxi Cui Jiehao Chen George M. Whitesides Joanna Aizenberg Yuhang Hu Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA Department of Mechanical Engineering University of Colorado Boulder CO 80309 USA Materials Science and Engineering Program University of Colorado Boulder CO 80309 USA INM – Leibniz Institute for New Materials Campus D2 2 66123 Saarbrücken Germany Department of Chemistry and Chemical Biology Harvard University Cambridge MA 02318 USA Wyss Institute for Biologically Inspired Engineering Harvard University Cambridge MA 02138 USA Kavli Institute for Bionano Science and Technology Harvard University Cambridge MA 02138 USA John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA 30332 USA

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Corrigendum to “Plasticity-induced origami for assembly of three dimensional metallic structures guided by compressive buckling” [Extreme Mech. Lett. 11 (2017) 105–110]

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Extreme mechanics Letters 2017年 15卷 151-151页

作者： Yan Shi Fan Zhang Kewang Nan Xueju Wang Juntong Wang Yijie Zhang Yutong Zhang Haiwen Luan Keh-Chih Hwang Yonggang Huang John A. Rogers Yihui Zhang Department of Engineering Mechanics Center for Mechanics and Materials Applied Mechanics Laboratory Tsinghua University Beijing 100084 PR China Department of Mechanical Science and Engineering University of Illinois at Urbana-Champaign Urbana IL 61801 USA Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA Departments of Civil and Environmental Engineering Mechanical Engineering and Materials Science and Engineering 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

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Reply to “Comment on ‘Correlation and relativistic effects in U metal and U-Zr alloy: Validation of ab initio approaches’ ”

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Physical Review B 2016年第15期93卷 157101-157101页

作者： Wei Xie Chris A. Marianetti Dane Morgan Materials Science Program University of Wisconsin-Madison Madison Wisconsin 53706 USA Department of Applied Physics and Applied Mathematics Columbia University New York New York 10027 USA Department of Materials Science and Engineering University of Wisconsin-Madison Madison Wisconsin 53706 USA

In the Comment by Söderlind et al. [Phys. Rev. B 90, 157101 (2014)], the authors argue that (1) density functional theory (DFT), especially with all-electron methods, already models U metal and U-Zr alloy accurately; and (2) DFT+U results calculated at Ueff=1.24 for volume, enthalpy, and magnetic moments that they select from our study [Phys. Rev. B 88, 235128 (2013)] suggest adding the Hubbard U potential in DFT+U reduces accuracy compared to DFT. With respect to argument (1) by Söderlind et al., we argue that previously neglected and very recent experimental data suggest that DFT in Söderlind's full-potential linear muffin-tin orbital calculations [Phys. Rev. B 66, 085113 (2002)] still models the bulk modulus and elastic constants of αU with errors considerably larger than other related elements, e.g., most transition metals. In addition, we demonstrate that the assertion by Söderlind et al. that our DFT results are not satisfactory because deficiency exists in our projector augmented wave calculation is unfounded. With respect to argument (2) by Söderlind et al., we argue that they have inappropriately focused on just one phase [the bcc phase γ(U,Zr)], neglecting the other phases which represent the majority of our evidence; made overgeneralizations based on results at only one Ueff value of 1.24 eV; and supported their argument with inaccurate assertions that DFT+U predicts for γ(U,Zr) an unprecedentedly large positive volume of mixing and an enthalpy of mixing that is inconsistent with the experimental miscibility gap. We therefore hold to our original conclusion that the accuracy of DFT for modeling U and U-Zr has room for improvement and DFT+U is a good candidate.

关键词： PHYSICS periodicals URANIUM alloys ZIRCONIUM alloys MAGNETIC moments

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Adaptive materials: Light‐Driven Reversible Transformation between Self‐Organized Simple Cubic Lattice and Helical Superstructure Enabled by a Molecular Switch Functionalized Nanocage (Adv. Mater. 26/2018)

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Advanced materials 2018年第26期30卷

作者： Kang Zhou Hari Krishna Bisoyi Jian‐Qiu Jin Cong‐Long Yuan Zhen Liu Dong Shen Yan‐Qing Lu Zhi‐Gang Zheng Weian Zhang Quan Li Department of Physics East China University of Science and Technology Shanghai 200237 China Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA Shanghai Key Laboratory of Functional Materials Chemistry East China University of Science and Technology Shanghai 200237 China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Colleague of Engineering and Applied Sciences Nanjing University Nanjing 210093 China

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A demonstration of improved constraints on primordial gravitational waves with delensing

arXiv

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arXiv 2020年

作者： Ade, P.A.R. Ahmed, Z. Amiri, M. Anderson, A.J. Austermann, J.E. Avva, J.S. Barkats, D. Thakur, R. Basu Beall, J.A. Bender, A.N. Benson, B.A. Bianchini, F. Bischoff, C.A. Bleem, L.E. Bock, J.J. Boenish, H. Bullock, E. Buza, V. Carlstrom, J.E. Chang, C.L. Cheshire, J.R. Chiang, H.C. Chou, T.-L. Citron, R. Connors, J. Moran, C. Corbett Cornelison, J. Crawford, T.M. Crites, A.T. Crumrine, M. Cukierman, A. de Haan, T. Dierickx, M. Dobbs, M.A. Duband, L. Everett, W. Fatigoni, S. Filippini, J.P. Fliescher, S. Gallicchio, J. George, E.M. Germaine, T.St. Goeckner-Wald, N. Goldfinger, D.C. Grayson, J. Gupta, N. Hall, G. Halpern, M. Halverson, N.W. Harrison, S. Henderson, S. Henning, J.W. Hildebrandt, S.R. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hrubes, J.D. Huang, N. Hubmayr, J. Hui, H. Irwin, K.D. Kang, J. Karkare, K.S. Karpel, E. Kefeli, S. Kernasovskiy, S.A. Knox, L. Kovac, J.M. Kuo, C.L. Lau, K. Lee, A.T. Leitch, E.M. Li, D. Lowitz, A. Manzotti, A. McMahon, J.J. Megerian, K.G. Meyer, S.S. Millea, M. Mocanu, L.M. Moncelsi, L. Montgomery, J. Nadolski, A. Namikawa, T. Natoli, T. Netterfield, C.B. Nguyen, H.T. Nibarger, J.P. Noble, G. Novosad, V. O’Brient, R. Ogburn, R.W. Omori, Y. Padin, S. Palladino, S. Patil, S. Prouve, T. Pryke, C. Racine, B. Reichardt, C.L. Reintsema, C.D. Richter, S. Ruhl, J.E. Saliwanchik, B.R. Schaffer, K.K. Schillaci, A. Schmitt, B.L. Schwarz, R. Sheehy, C.D. Sievers, C. Smecher, G. Soliman, A. Stark, A.A. Steinbach, B. Sudiwala, R.V. Teply, G.P. Thompson, K.L. Tolan, J.E. Tucker, C. Turner, A.D. Umiltà, C. Veach, T. Vieira, J.D. Vieregg, A.G. Wandui, A. Wang, G. Weber, A.C. Whitehorn, N. Wiebe, D.V. Willmert, J. Wong, C.L. Wu, W.L. Kimmy Yang, H. Yefremenko, V. Yoon, K.W. Young, E. Yu, C. Zeng, L. Zhang, C. Cardiff University CardiffCF10 3XQ United Kingdom SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States Kavli Institute for Particle Astrophysics and Cosmology Stanford University 452 Lomita Mall StanfordCA94305 United States Department of Physics and Astronomy University of British Columbia VancouverBCV6T 1Z1 Canada Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States Department of Physics University of Colorado BoulderCO80309 United States Department of Physics University of California BerkeleyCA94720 United States Harvard-Smithsonian Center for Astrophysics 60 Garden Street CambridgeMA02138 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia Department of Physics University of Cincinnati CincinnatiOH45221 United States Jet Propulsion Laboratory PasadenaCA91109 United States Department of Physics Harvard University CambridgeMA02138 United States Minnesota Institute for Astrophysics University of Minnesota MinneapolisMN55455 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada School of Mathematics Statistics & Computer Science University of KwaZulu-Natal

We present a constraint on the tensor-to-scalar ratio, r, derived from measurements of cosmic microwave background (CMB) polarization B-modes with "delensing," whereby the uncertainty on r contributed by the sample variance of the gravitational lensing B-modes is reduced by cross-correlating against a lensing B-mode template. This template is constructed by combining an estimate of the polarized CMB with a tracer of the projected large-scale structure. The large-scale-structure tracer used is a map of the cosmic infrared background derived from Planck satellite data, while the polarized CMB map comes from a combination of South Pole Telescope, Bicep/Keck, and Planck data. We expand the Bicep/Keck likelihood analysis framework to accept a lensing template and apply it to the Bicep/Keck data set collected through 2014 using the same parametric foreground modelling as in the previous analysis. From simulations, we find that the uncertainty on r is reduced by ∼ 10%, from σ(r)= 0.024 to 0.022, which can be compared with a ∼ 26% reduction obtained when using a perfect lensing template or if there were zero lensing B-modes. Applying the technique to the real data, the constraint on r is improved from r0.05 Copyright © 2020, The Authors. All rights reserved.

关键词： Cosmology

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Erratum: “Stabilization of orthorhombic phase in single-crystal ZnSnN2 films” [AIP Advances 6, 075019 (2016)]

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AIP Advances 2018年第12期8卷

作者： Nancy Senabulya Nathaniel Feldberg Robert. A. Makin Yongsoo Yang Guangsha Shi Christina M. Jones Emmanouil Kioupakis James Mathis Roy Clarke Steven M. Durbin 1Applied Physics Program University of Michigan Ann Arbor Michigan 48109 USA 2Department of Physics University at Buffalo Buffalo New York 14260 USA 3Department of Electrical and Computer Engineering Western Michigan University Kalamazoo Michigan 49008-5329 USA 4Department of Physics University of Michigan Ann Arbor Michigan 48109 USA 5Department of Materials Science and Engineering University of Michigan Ann Arbor Michigan 48109 USA

Both these corrections are typographical errors that do not affect the validity of results in the original article.

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Real-space investigation of short-range magnetic correlations in uoride pyrochlores NaCaCo2F7 and NaSrCo2F7 with magnetic pair distribution function analysis

arXiv

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arXiv 2017年

作者： Frandsen, Benjamin A. Ross, Kate A. Krizan, Jason W. Nilsen, Goran J. Wildes, Andrew R. Cava, Robert J. Birgeneau, Robert J. Billinge, Simon J.L. Materials Sciences Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Physics University of California BerkeleyCA94720 United States Department of Physics Colorado State University Fort CollinsCO80523 United States Quantum Materials Program Canadian Institute for Advanced Research TorontoONM5G1Z8 Canada Department of Physics Princeton University PrincetonNJ08544 United States Institut Laue-Langevin CS 20156 Grenoble Cedex 938042 France ISIS Neutron and Muon Facility Rutherford Appleton Laboratory DidcotOX110QX United Kingdom Institut Laue-Langevin Grenoble38000 France Materials Science Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Materials Science and Engineering University of California BerkeleyCA94720 United States Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory UptonNY11973 United States Department of Applied Physics and Applied Mathematics Columbia University New YorkNY10027 United States

We present time-of-ight neutron total scattering and polarized neutron scattering measurements of the magnetically frustrated compounds NaCaCo2F7 and NaSrCo2F7, which belong to a class of recently discovered pyrochlore compounds based on transition metals and uorine. The magnetic pair distribution function (mPDF) technique is used to analyze and model the total scattering data in real space. We find that a previously-proposed model of short-range XY-like correlations with a length scale of 10-15 A, combined with nearest-neighbor collinear antiferromagnetic correlations, accurately describes the mPDF data at low temperature, confirming the magnetic ground state in these materials. This model is further verified by the polarized neutron scattering data. From an analysis of the temperature dependence of the mPDF and polarized neutron scattering data, we find that short-range correlations persist on the nearest-neighbor length scale up to 200 K, approximately two orders of magnitude higher than the spin freezing temperatures of these compounds. These results highlight the opportunity presented by these new pyrochlore compounds to study the effects of geometric frustration at relatively high temperatures, while also advancing the mPDF technique and providing a novel opportunity to investigate a genuinely short-range-ordered magnetic ground state directly in real space. Copyright © 2017, The Authors. All rights reserved.

关键词： Magnetism

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Cover Image, Volume 86, Issue 5

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Proteins: Structure, Function, and Bioinformatics 2018年第5期86卷

作者： J. C. Gaines S. Acebes A. Virrueta M. Butler L. Regan C. S. O'Hern Program in Computational Biology and Bioinformatics Yale University New Haven Connecticut 06520 Integrated Graduate Program in Physical and Engineering Biology (IGPPEB) Yale University New Haven Connecticut 06520 Department of Mechanical Engineering and Materials Science Yale University New Haven Connecticut 06520 Department of Physics and Astronomy University of Southern California Los Angeles California 90007 Department of Molecular Biophysics & Biochemistry Yale University New Haven Connecticut 06520 Department of Chemistry Yale University New Haven Connecticut 06520 Department of Physics Yale University New Haven Connecticut 06520 Department of Applied Physics Yale University New Haven Connecticut 06520

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Development of untwisted carbon nanotube yarn with high strength by heat treatment 17

Development of untwisted carbon nanotube yarn with high stre...

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17th European Conference on Composite materials, ECCM 2016

作者： Kim, Taesung Nikawa, Hidefumi Hosoi, Atsushi Kawada, Hiroyuki Department of Applied Mechanics Waseda University 3-4-1 Okubo Shinjuku-kuTokyo Japan Honda RandD Co. Ltd. Automobile RandD Center 1-4-1 Chuo WakoSaitama Japan Department of Applied Mechanics and Aerospace Engineering Waseda University 3-4-1 Okubo Shinjuku-kuTokyo Japan Kagami Memorial Laboratory for Materials Science and Technology Waseda University 2-8-26 Nishiwaseda Shinjuku-kuTokyo Japan

ISBN: (纸本)9783000533877

Carbon nanotube (CNT) is increasingly applied as a reinforcement of polymer matrix composite because of extremely high mechanical properties. Among several forms of CNT reinforcement, CNT yarn can be a next-generation reinforcement which enables the use of CNTs in the macro-scale. In this study, untwisted CNT yarns were fabricated by the dry spinning method using a die and graphitized in order to develop CNT yarns with high strength and stiffness. Impure materials and defective structures on MWCNTs were removed after graphitization treatment. G/D ratio was improved more than 10 times. Stress transfer between constituent MWCNTs of CNT yarns became more effectively by removing impure materials. Consequently, macroscopic mechanical properties of CNT yarns were improved by the graphitization treatment in addition to improvement of MWCNT itself. © 2016, European Conference on Composite materials, ECCM. All rights reserved.

关键词： Heat treatment

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Enhanced electrochemical performance promoted by monolayer graphene and void space in silicon composite anode materials

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Nano Energy 2016年 27卷 647-657页

作者： Xuli Ding XiaoXiao Liu Yangyang Huang Xuefu Zhang Qianjin Zhao Xinghua Xiang Guolong Li Pengfei He Zhaoyin Wen Ju Li Yunhui Huang Collaborative Innovation Center of Intelligent New Energy Vehicle School of Materials Science and Engineering Tongji University Shanghai 201804 China School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China School of Aerospace Engineering and Applied Mechanics Shanghai 200092 China CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China Department of Nuclear Science and Engineering and Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 United States

The high specific capacity battery electrode materials have stimulated great research interest. Silicon (Si) as a low-cost abundant material with a theoretical specific capacity of 4200 mA h g −1 , offers an attractive option for the low-cost next-generation high capacity Li-ion batteries anode. However, successful applications of silicon anode have been impeded by several limitations such as large volume expansion (400%) with lithiation, poor conductivity and unstable solid electrolyte interphase (SEI) with cycles. To address these challenges, we engineered Si nanoparticles by encapsulating them with monolayer graphene (mGra) with empty space generated by melt-self-assembly Cu layer. Here, a new method is introduced to uniform encapsulate the nano-silicon particles. The synthesis process used low-cost Si nanoparticles and Cu foils via chemical vapor deposition methods. The mGra and void space around the Si nanoparticles guaranteed to overcome mentioned problems. The flexibility nature and high conductivity of mGra effectively accommodate the Si volume expansion associated with the lithiation, and function as charges fast channels that allow for ions and electrons transport in fast kinetics. Most important, the crystalized mGra layer served as a flexible protective layer avoiding the SNPs direct exposed to electrolyte, which boosted the formation of stable and thin SEI interface. Our anode demonstrated a high initial coulomb efficiency (CE) 85% with gravimetric capacity ~1450 mA h g −1 (based on the total mass) and long cycle life (500 cycles with 89% capacity retention). Such [email protected] @mGra structure orienting excellent cycle life and high charge capacity provide a promising prospect for the next-generation high specific energy battery.

关键词： Nano-silicon Monolayer graphene Chemical vapor deposition Melt-self-assembly Composite anode

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