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Publisher Correction: Bistable and photoswitchable states of matter

Nature communications 2018年第1期9卷 3204页

作者： Brady T Worrell Matthew K McBride Gayla B Lyon Lewis M Cox Chen Wang Sudheendran Mavila Chern-Hooi Lim Hannah M Coley Charles B Musgrave Yifu Ding Christopher N Bowman Department of Chemical and Biological Engineering University of Colorado Boulder CO 80309 USA. Formlabs Inc 35 Medford St. #201 Somerville MA 02143 USA. Applied Chemicals and Materials Division National Institute of Standards and Technology Boulder CO 80305 USA. Department of Mechanical Engineering University of Colorado Boulder CO 80309 USA. Department of Chemistry Colorado State University Fort Collins CO 80523 USA. Material Science and Engineering Program University of Colorado Boulder CO 80309 USA. Department of Chemical and Biological Engineering University of Colorado Boulder CO 80309 USA. Christopher.Bowman@colorado.edu. Material Science and Engineering Program University of Colorado Boulder CO 80309 USA. Christopher.Bowman@colorado.edu. BioFrontiers Institute University of Colorado Boulder CO 80309 USA. Christopher.Bowman@colorado.edu. Department of Restorative Dentistry University of Colorado Anschutz Medical Campus Aurora CO 80045 USA. Christopher.Bowman@colorado.edu.

The original version of this Article contained errors in Fig. 3. In Fig. 3a, the word 'fluid' in grey was incorrectly given as 'solid' in green, below that, 'solid' in green was previously '...

The original version of this Article contained errors in Fig. 3. In Fig. 3a, the word 'fluid' in grey was incorrectly given as 'solid' in green, below that, 'solid' in green was previously 'fluid' in grey. Also, the label on the arrow incorrectly read 'TMG (1 mol%) HABI-Cl (3 mol%) 455 nm, 1 min'; the correct version reads 'TMG (1 mol%) HABI-O-n-oct (4 mol%) 455 nm, 4 min'. In the accompanying legend, the word 'photobase' was originally incorrectly given as 'photoacid'. Additionally, in Fig. 3b, the label on the central image was 'As is: solid', rather than the correct 'As is: fluid'. This has been corrected in both the PDF and HTML versions of the Article.

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Reducing Electron Dose and Sample Damage with Bayesian Machine Learning and Self-Organizing Neural Networks

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Microscopy and Microanalysis 2016年第S3期22卷 1434-1435页

作者： Karl Hujsak Benjamin D. Myers Eric Roth Yue Li Vinayak P. Dravid Department of Materials Science & Engineering Northwestern University Evanston Illinois 60208-3108 Electron Probe and Instrumentation Center NUANCE Northwestern University Evanston Illinois 60208-3108 Applied Physics Program Northwestern University Evanston Illinois 60208-3108

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Flexible Electronics: An Epidermal Stimulation and Sensing Platform for Sensorimotor Prosthetic Control, Management of Lower Back Exertion, and Electrical Muscle Activation (Adv. Mater. 22/2016)

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Advanced materials 2016年第22期28卷 4563-4563页

作者： Xu, Baoxing Akhtar, Aadeel Liu, Yuhao Chen, Hang Yeo, Woon-Hong Park, Sung II Boyce, Brandon Kim, Hyunjin Yu, Jiwoo Lai, Hsin-Yen Jung, Sungyoung Zhou, Yuhao Kim, Jeonghyun Cho, Seongkyu Huang, Yonggang Bretl, Timothy Rogers, John A. Department of Mechanical and Aerospace Engineering University of Virginia CharlottesvilleVA22904 United States Department of Materials Science and Engineering Beckman Institute and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign UrbanaIL61801 United States Neuroscience Program Medical Scholars Program Beckman Institute and Coordinated Science Laboratory University of Illinois at Urbana-Champaign UrbanaIL61801 United States Department of Engineering Mechanics and Center for Mechanics and Materials Tsinghua University Beijing100084 China Department of Mechanical Engineering and Department of Civil and Environmental Engineering Center for Engineering and Healthand Skin Disease Research Center Northwestern University EvanstonIL60208 United States Department of Mechanical and Nuclear Engineering Center for Rehabilitation Science and Engineering Virginia Commonwealth University RichmondVA23284 United States Department of Aerospace Engineering Beckman Institute and Coordinated Science Laboratory University of Illinois at Urbana-Champaign UrbanaIL61801 United States

The design of an ultrathin, conformal electronic device that integrates electrotactile stimulation with electromyography, temperature, and strain sensing in a single, simple platform is reported by J. A. Rogers and co-workers on page 4462. Demonstrated application possibilities include prosthetic control with sensory feedback, monitors, and stimulation signals related to lower back exertion, and electrical muscle stimulation with feedback control.

关键词： epidermal sensors electrostimulation ultrathin electronics electromyography, sensorimotor control

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Electrochemical behavior of Ti(C,N)-Ni3Al cermets

Electrochemical behavior of Ti(C,N)-Ni3Al cermets

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Processing and Properties of Advanced Ceramics and Composites VII - materials science and Technology 2014 Conference, MS and T 2014

作者： Holmes, M.B. Kipouros, G.J. Farhat, Z.N. Plucknett, K.P. Dalhousie University Materials Engineering Program Department of Process Engineering and Applied Science 1360 Barrington St. HalifaxNS Canada

ISBN: (纸本)9781119183877

TiCxN1-x (with x = 0.7, 0.5 and 0.3) cermets were successfully prepared with 40 vol.% Ni3Al metallic binder, using a simple melt-infiltration sintering process. In order to assess their susceptibility to electrochemical corrosion, the polished cermets were then evaluated immersed in a 3.5 wt.% NaCl aqueous solution. An increasing corrosion current density was observed with increasing carbon content in the Ti(C,N) matrix. However, there also appear to be greater areas of passivation/re-passivation with increasing carbon content, suggesting that although the higher carbon content samples displayed a predisposition to corrosive attack, they were more suited to withstand that attack, possibly by the oxide formation of the passivating metal binders. Pitting corrosion was observed wim each sample, demonstrating an increasing degree of formation of deep crevices wim rising carbon content. Copyright © 2015 by the American Ceramic Society. All rights reserved.

关键词： Sodium chloride

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Electrical charge induced selective ions transportation in ionic diode nano-membrane for desalination 19

Electrical charge induced selective ions transportation in i...

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19th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2015

作者： Lin, Chia-Kai Lai, Chih-Chung Chueh, Yu-Lun Tseng, Fan-Gang Department of Engineering and System Science National Tsing Hua University Taiwan Department of Materials Science and Engineering National Tsing Hua University Taiwan Division of Mechanics Research Center for Applied Sciences Academia Sinica Taiwan

ISBN: (纸本)9780979806483

This paper proposes the manipulation of electric-double-layer (EDL) overlap inside nanochannels of ALD-HfO2/Anodic-Alumina-Oxide (AAO) structures for retardation of both cations and anions spontaneously for desalination. Theoretically, our approach is more energy-efficient than reversal osmosis (RO) technology for water purification [1]. This abstract further investigated the ionic-diode characteristic of the nano-membrane for enhancing desalination efficiency to 86.7 % drop of NaCl concentration in 12 hours. © 15CBMS-0001.

关键词： Desalination

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Corrigendum to “Nano-crystals of cerium-hafnium binary oxide: Their size-dependent structure” [J. Alloys Compd. 644 (2015) 996–1002]

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Journal of Alloys and Compounds 2017年 725卷 1330-1330页

作者： Joan M. Raitano Syed Khalid Nebojsa Marinkovic Siu-Wai Chan Department of Applied Physics and Applied Mathematics Materials Science and Engineering Program Columbia University New York NY 10027 USA National Synchrotron Light Source Brookhaven National Laboratory Upton NY 11973 USA Chemical Engineering Department Columbia University 500 W 120th St Mudd 801 New York NY 10027 USA

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A high efficient phosphoric acid micro fuel cell with nano/micro synergic composite membranes 19

A high efficient phosphoric acid micro fuel cell with nano/m...

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19th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2015

作者： Chang, Cheng-Ping Lu, Chia-Lien Tseng, Fang-Gang Interdisciplinary Program of Nuclear Science National Tsing Hua University Taiwan Department of Engineering and System Science National Tsing Hua University Taiwan Division of Mechanics Reschanics Researchnter for Applied Science Academia Sinica Taiwan

ISBN: (纸本)9780979806483

This paper reports a high efficient phosphoric acid micro fuel cell by employing a micro/nano composite proton exchange membrane, which incorporates glass microporous fiber (GMF) sealed by polytetrafluoroethene (PTFE) nanoporous film. The multilayer membrane possesses synergic membrane's advantages, such as high proton conductivity from large porosity (93%) of glass microporous fiber, and leakage prevention of phosphoric acid by covering the microporous glass fiber with a nanoporous (50-400 nm) PTFE film. Current density of 1320 mA/cm2 and power density of 469 mW/cm2 were achieved by this novel configuration. © 15CBMS-0001.

关键词： Glass

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Influence of the cavity geometry on the heat transfer conditions inside highly perforated bricks

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AIP Conference Proceedings 2017年第1期1863卷

作者： Václav Kočí Jan Kočí Jiří Maděra Pavel Beran Robert Černý 1Department of Materials Engineering and Chemistry Faculty of Civil Engineering Czech Technical University in Prague Thákurova 7/2077 166 29 Prague 6 Czech Republic 2Institute of Theoretical and Applied Mechanics Czech Academy of Science Prosecká 809/76 190 00 Prague 9 Czech Republic

Heat transfer conditions inside a segment of highly perforated bricks are investigated in the paper. The main objective of the presented analysis is to quantify the influence of the cavity geometry and orientation on the equivalent thermal conductivity of the segment. Five cavities with the same area but different shape are assumed. The calculations are performed by finite element method, while the steady-state two-dimensional heat transfer is assumed. Considering the generalized heat-conduction model, radiative heat fluxes on the cavity surface are quantified based on view factors determined using the cross-string method. Calculated radiative heat fluxes are explicitly added to the surface cavity nodes. Then, after convergence of the temperature field, equivalent thermal conductivity of the segment can be expressed. The results show that circle-shaped cavity exhibits the lowest radiative heat transfer but the lowest equivalent thermal conductivity is obtained when triangle cavities are assumed. The radiative heat transfer is found significant for all analyzed cavities; it can account for more than 30 % of the overall heat transfer.

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Magnetoelectric memory function with optical readout

arXiv

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arXiv 2017年

作者： Kocsis, V. Penc, K. Rõõm, T. Nagel, U. Vít, J. Romhányi, J. Tokunaga, Y. Taguchi, Y. Tokura, Y. Kézsmárki, I. Bordács, S. Wako Saitama351-0198 Japan Department of Physics Budapest University of Technology and Economics and MTA-BME Lendület Magneto-optical Spectroscopy Research Group Budapest1111 Hungary Institute for Solid State Physics and Optics Wigner Research Centre for Physics Hungarian Academy of Sciences P.O.B. 49 BudapestH-1525 Hungary National Institute of Chemical Physics and Biophysics Tallinn12618 Estonia Institute of Physics ASCR Na Slovance 2 Prague 8182 21 Eue Faculty of Nuclear Science and Physical Engineering Czech Technical University Břehová 7 Prague 1115 19 Eue Okinawa Institute of Science and Technology Graduate University Onna-sonOkinawa904-0395 Japan Department of Advanced Materials Science University of Tokyo Kashiwa277-8561 Japan Quantum-Phase Electronics Center Department of Applied Physics University of Tokyo Tokyo113-8656 Japan Department of Applied Physics University of Tokyo Hongo Tokyo113-8656 Japan Experimental Physics 5 Center for Electronic Correlations and Magnetism Institute of Physics University of Augsburg Augsburg86159 Germany Hungarian Academy of Sciences Premium Postdoctor Program Budapest1051 Hungary

The ultimate goal of multiferroic research is the development of new-generation non-volatile memory devices1, the so-called magnetoelectric (ME) memories, where magnetic bits are controlled via electric fields without the application of electrical currents subject to dissipation. This low-power operation exploits the entanglement of the magnetization and the electric polarization coexisting in multiferroic materials2,3. Here we demonstrate the optical readout of ME memory states in the antiferromagnetic (AFM) and antiferroelectric (AFE) LiCoPO4, based on the strong absorption difference of THz radiation between its two types of ME domains. This unusual contrast is attributed to the dynamic ME effect of the spin-wave excitations, as confirmed by our microscopic model, which also captures the characteristics of the observed static ME effect. Our proof-of-principle study, demonstrating the control and the optical readout of ME domains in LiCoPO4, lays down the foundation for future ME memory devices based on antiferroelectric-antiferromagnetic insulators. Copyright © 2017, The Authors. All rights reserved.

关键词： Digital storage

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Time-of-flight three dimensional neutron diffraction in transmission mode for mapping crystal grain structures

arXiv

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arXiv 2017年

作者： Cereser, Alberto Strobl, Markus Hall, Stephen Steuwer, Axel Kiyanagi, Ryoji Tremsin, Anton Knudsen, Erik Bergbäck Shinohara, Takenao Willendrup, Peter da Silva Fanta, Alice Bastos Iyengar, Srinivasan Larsen, Peter Mahler Hanashima, Takayasu Moyoshi, Taketo Kadletz, Peter M. Krooß, Philip Niendorf, Thomas Sales, Morten Schmahl, Wolfgang W. Schmidt, Søren NEXMAP Department of Physics Technical University of Denmark Kgs. Lyngby2800 Denmark European Spallation Source ESS AB Lund22592 Sweden Niels Bohr Institute University of Copenhagen Copenhagen2100 Denmark Division of Solid Mechanics Lund University Lund22362 Sweden Nelson Mandela Metropolitan University Port Elizabeth6031 South Africa University of Malta MsidaMSD 2080 Malta J-PARC center Japan Atomic Energy Agency Tokai-mura319-1195 Japan Space Sciences Laboratory University of California at Berkeley BerkeleyCA94720 United States Center for Electron Nanoscopy Technical University of Denmark Kgs. Lyngby2800 Denmark Division of Materials Engineering Lund University Lund22362 Sweden Research Center for Neutron Science and Technology CROSS Tokai Naka-gun319-1106 Japan Applied Crystallography and Materials Science Department of Earth and Environmental Sciences Ludwig-Maximilians-Universität München80333 Germany Universität Kassel Kassel34125 Germany

The physical properties of polycrystalline materials depend on their microstructure, which is the nano-to-centimeter-scale arrangement of phases and defects in their interior. Such microstructure depends on the shape, crystallographic phase and orientation, and interfacing of the grains constituting the material. This article presents a new non-destructive 3D technique to study bulk samples with sizes in the cm range with a resolution of hundred micrometers: time-of-flight three-dimensional neutron diffraction (ToF 3DND). Compared to existing analogous X-ray diffraction techniques, ToF 3DND enables studies of samples that can be both larger in size and made of heavier elements. Moreover, ToF 3DND facilitates the use of complicated sample environments. The basic ToF 3DND setup, utilizing an imaging detector with high spatial and temporal resolution, can easily be implemented at a time-of-flight neutron beamline. The technique was developed and tested with data collected at the materials and Life science Experimental Facility of the Japan Proton Accelerator Complex (J-PARC) for an iron sample. We successfully reconstructed the shape of 108 grains and developed an indexing procedure. The reconstruction algorithms have been validated by reconstructing two stacked Co-Ni-Ga single crystals, and by comparison with a grain map obtained by post-mortem electron backscatter diffraction (EBSD). Copyright © 2017, The Authors. All rights reserved.

关键词： Neutron diffraction

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