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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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Flammability Characterization and Effects of Magnesium Oxide in Halogen-free Flame-retardant EVA Blends

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Chinese Journal of Polymer science 2015年第12期33卷 1683-1690页

作者： Yan Zhang Rui-qun Peng 周光大 Zheng-ping Fang Xiao-nan Li Lab of Polymer Materials and Engineering Ningbo Institute of Technology Zhejiang University Hangzhou First PV Material Co. Ltd. MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University

The effects of magnesium oxide （MgO） on the flame retardant performance of intumescent systems based on ammonium polyphosphate （APP） and pentaerythritol （PER） in ethylene vinyl acetate copolymer （EVA） were studied. The results showed that MgO affects both the quality and quantity of residual char. There is an optimal value for the loading amount of MgO. More or less MgO loading may cause the formation of defective char layers and worsen the flame retardancy of EVA. According to the results of limiting oxygen index （LOI）, vertical flammability test （UL94 rating） and cone calorimetry （CONE）, the best flame retardancy with a strong and well intumescent char is obtained from the sample with 1 wt% of MgO, which has the highest LOI value of 27.9, UL94 rating of V-0 and the lowest peak heat release rate of 242 kW·m-2.

关键词： Flammability Magnesium oxide Flame retardancy Ethylene vinyl acetate copolymer Intumescence.

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Macromol. Biosci. 4/2018

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macromolecular Bioscience 2018年第4期18卷

作者： Raviraj Vankayala Samantha R. Corber Jenny T. Mac Masaru P. Rao Mohammad Shafie Bahman Anvari Department of Bioengineering University of California Riverside 900 University Avenue Riverside CA 92521 USA Department of Mechanical Engineering University of California Riverside 900 University Avenue Riverside CA 92521 USA Department of Biochemistry University of California Riverside 900 University Avenue Riverside CA 92521 USA Material Science and Engineering Program University of California Riverside 900 University Avenue Riverside CA 92521 USA School of Medicine Department of Neurology University of California Irvine 200 S. Manchester Ave. Ste 206 Orange CA 92868 USA

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The Influence of Chemical Modification on Linker Rotational Dynamics in Metal–Organic Frameworks

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Angewandte Chemie 2018年第28期130卷

作者： Joshua T. Damron Jialiu Ma Ricardo Kurz Kay Saalwächter Adam J. Matzger Ayyalusamy Ramamoorthy Department of Chemistry University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA Institut für Physik-NMR Halle/Saale Germany Macromolecular Science and Engineering University of Michigan 2300 Hayward Avenue Ann Arbor MI 48109-1055 USA Biophysics Program University of Michigan 930 N. University Ave. Ann Arbor MI 48109-1055 USA

The robust synthetic flexibility of metal–organic frameworks (MOFs) offers a promising class of tailorable materials, for which the ability to tune specific physicochemical properties is highly desired. This is achievable only through a thorough description of the consequences for chemical manipulations both in structure and dynamics. Magic angle spinning solid‐state NMR spectroscopy offers many modalities in this pursuit, particularly for dynamic studies. Herein, we employ a separated‐local‐field NMR approach to show how specific intraframework chemical modifications to MOF UiO‐66 heavily modulate the dynamic evolution of the organic ring moiety over several orders of magnitude.

关键词： DFT-Rechnungen Dynamik Metall-organische Gerüste Mikroporöse materialien NMR-Spektroskopie

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Optical manipulation of shape-morphing elastomeric liquid crystal microparticles doped with gold nanocrystals

arXiv

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arXiv 2017年

作者： Sun, Yaoran Evans, Julian S. Lee, Taewoo Senyuk, Bohdan Keller, Patrick He, Sailing Smalyukh, Ivan I. Department of Physics Material Science and Engineering Program Department of Electrical Computer & Energy Engineering and Liquid Crystal Materials Research Center University of Colorado BoulderCO80309 United States Centre for Optical and Electromagnetic Research Zhejiang University Hangzhou310058 China Institut Curie Centre de Recherche CNRS UMR 168 Université Pierre et Marie Curie Paris cedex 0575248 France Department of Chemistry and Biochemistry and Liquid Crystal Materials Research Center University of Colorado BoulderCO80309 United States Department of Electromagnetic Engineering Royal Institute of Technology StockholmS-100 44 Sweden Renewable and Sustainable Energy Institute National Renewable Energy Laboratory University of Colorado BoulderCO80309 United States

We demonstrate facile optical manipulation of shape of birefringent colloidal microparticles made from liquid crystal elastomers. Using soft lithography and polymerization, we fabricate elastomeric microcylinders with weakly undulating director oriented on average along their long axes. These particles are infiltrated with gold nanospheres acting as heat transducers that allow for an efficient localized transfer of heat from a focused infrared laser beam to a submicrometer region within a microparticle. Photothermal control of ordering in the liquid crystal elastomer using scanned beams allows for a robust control of colloidal particles, enabling both reversible and irreversible changes of shape. Possible applications include optomechanics, microfluidics, and reconfigurable colloidal composites with shape-dependent self-assembly. Copyright © 2017, The Authors. All rights reserved.

关键词： Liquid crystals

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Ultrafast optical spectroscopy of surface-modified silicon quantum dots: unraveling the underlying mechanism of the ultrabright and color-tunable photoluminescence

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Light(science & Applications) 2015年第1期4卷 524-531页

作者： Lei Wang Qi Li Hai-Yu Wang Jing-Chun Huang Ran Zhang Qi-Dai Chen Huai-Liang Xu Wei Han Zheng-Zhong Shao Hong-Bo Sun State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China College of Physics Jilin UniversityChangchun 130012China State Key Laboratory of Molecular Engineering of Polymers Advanced Material LaboratoryDepartment of Macromolecular ScienceFudan UniversityShanghai 200433China

In this work,the fundamental mechanism of ultrabright fluorescence from surface-modified colloidal silicon quantum dots is investigated in depth using ultrafast *** underlying energy band structure corresponding to such highly efficient direct bandgap-like emissions in our surface-modified silicon quantum dots is unraveled by analyzing the transient optical spectrum,which demonstrates the significant effect of surface molecular *** is observed that special surface modification,which creates novel surface states,is responsible for the different emission wavelengths and the significant improvement in the photoluminescence quantum *** this essential understanding,surface-modified silicon quantum dots with deep blue to orange emission are successfully prepared without changing their sizes.

关键词： quantum confinement silicon quantum dots surface molecular engineering ultrafast spectroscopy wave function modification

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A synthetic biological secondary metabolite,Lycogen^TM,produced and extracted from Rhodobacter sphaeroides WL-APD911 in an optimizatioal scale-up strategy

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Food science and Human Wellness 2017年第4期6卷 195-201页

作者： Cheng-Chin Wang Shi-Ying Huang Shu-Hung Huang Zhi-Hong Wen Jyun-Ying Huang Wen-Sheng Liu Hui-Min David Wang Research and Development Department Chia-Yi SteelTainan 717TaiwanChina College of Oceanology and Food Science Quanzhou Normal UniversityQuanzhou 362000China Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae Quanzhou 362000China Division of Plastic Surgery Department of SurgeryKaohsiung Medical University HospitalKaohsiung Medical UniversityKaohsiung 807TaiwanChina Graduate Institute of Medicine College of MedicineKaohsiung Medical UniversityKaohsiung 807TaiwanChina Center for Stem Cell Research Kaohsiung Medical UniversityKaohsiung 807TaiwanChina Department of Surgery Faculty of MedicineCollege of MedicineKaohsiung Medical UniversityKaohsiung 807TaiwanChina Orthopaedic Research Center Kaohsiung Medical UniversityKaohsiung 807TaiwanChina Doctoral Degree Program in Marine Biotechnology National Sun Yat-sen University and Academia SinicaKaohsiung 804TaiwanChina Marine Biomedical Laboratory and Center for Translational Biopharmaceuticals Department of Marine Biotechnology and ResourcesNational Sun Yat-sen UniversityKaohsiung 804TaiwanChina Graduate Institute of Biomedical Engineering National Chung Hsing UniversityTaichung 402TaiwanChina Department and Graduate Institute of Aquaculture National Kaohsiung Marine UniversityKaohsiung 811TaiwanChina Asia-Pacific Biotech Developing Inc.Kaohsiung 803TaiwanChina Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 404TaiwanChina

The optimization of fermentation medium is important for synthetic biological secondary metabolite *** effect of rotation speed,inoculum amount,and medium supplements on the cell growth and Lycogen^TM secretion of photobacterium Rhodobacter sphaeroides WL-APD911 was *** results reveal that a higher rotational speed exhibit a higher cell density,and the increasing in the amount of inoculum amount show a slight augment on the growth of *** *** the case of nitrogen sources adding,Lycogen^TM production was achieved with a 0.5 mM l-lysine ***,the attention of Tween 80 presented a tremendous increase in the secondary *** surface methodology(RSM)exhibited the optimization of medium supplements for Lycogen^TM invention is accomplished at molasses concentration of 10 g/L,yeast extract concentration of 40 g/L,0.3%Tween 80 and NaCl concentration of 5 g/L,***,the batch fermentation is carried out in both 5 L and 20 L fermentors to study the scale-up process factors to be *** a 20 L fermentor,Lycogen^TM yields under the optimal culture condition are over 2 times than in the shake *** present results provide the Lycogen^TM optimal culture mediums,scale-up procedures and efficient extractions from *** WL-APD911.

关键词： Rhodobacter sphaeroides WL-APD911 Lycogen^TM Response surface methodology(RSM) Ferementation

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Fabrication and characterization of InGaAsP/Ag luminescent hyperbolic metamaterials

Fabrication and characterization of InGaAsP/Ag luminescent h...

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Microelectronics Technology and Devices (SBMicro)

作者： J. S. T. Smalley F. Vallini S. Montoya S. Shahin B. Kanté Z. Liu Y. Fainman L. Ferrari C. T. Riley E. E. Fullerton Department of Electrical & Computer Engineering University of California San Diego La Jolla USA Material Science and Engineering Program University of California San Diego La Jolla USA Department of NanoEngineering University of California San Diego La Jolla USA

We fabricate and characterize a luminescent hyperbolic metamaterial consisting of InGaAsP/Ag multilayers. For the first time, one of the metamaterial constituents is a gain media. The hyperbolic dispersion is confirme... 详细信息

关键词： Metamaterials Anisotropic magnetoresistance Optical polarization Optical device fabrication Optical pumping Optimized production technology

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Moldable setting time evaluation between sodium alginate and bovine gelatine of glutinous rice mixture as dental putty materials

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IOP Conference Series: materials science and engineering 2017年第1期172卷

作者： V Takarini Z Hasratiningsih E Karlina R Febrida L A T W Asri BS Purwasasmita Department of Dental Materials Science and Technology Faculty of Dentistry University of Padjadjaran Sekeloa Selatan 1 Bandung 40132 Indonesia Advanced Material Processing Laboratory Engineering Physics Study Program Institute of Technology Bandung Ganesha 10 Bandung 40132 Indonesia

Putty elastomeric material is a viscous, moldable material that can be used as a dental impression to record and duplicate the tooth structure. Commercially available putty materials are hardly found in the Indonesian market. The aim of this work is to develop an alternative putty dental material from glutinous rice with two different gelling agents; sodium alginate and bovine gelatine. A commercially putty material was used as a control. The length of time required for the putty materials to set (setting time) was evaluated with compression set test. The result showed that sodium alginate and bovine gelatine gelling agents resulted in moldable putty materials that comparable to the commercial product. Glutinous rice mixed with sodium alginate gelling agent demonstrated longer setting time (more than 1 hours) compared to bovine gelatine (6 minutes). These may occur due to heat treatment applied to the bovine gelatine, while sodium alginate mixture has a chemical reaction since CaCl2 crosslink agent had been added to the mixture. Glutinous rice with bovine gelatine mixture is a promising candidate to be used as a dental putty material.

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A new role for universities in training the nuclear workforce

A new role for universities in training the nuclear workforc...

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Conference on Nuclear Training and Education 2015, CONTE 2015

作者： Littrell, Janet L. Cole, Daniel G. University of Pittsburgh Swanson School of Engineering Department of Mechanical Engineering and Material Science Nuclear Engineering Program Benedum Hall 3700 0 Hara Street PittsburghPA United States

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