Jinhui Tao

Pacific Northwest National Laboratory

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Garry W. Buchko

Pacific Northwest National Laboratory

James J. De Yoreo

University of Washington

Brian O'callahan

Pacific Northwest National Laboratory

Ruikang Tang

Zhejiang University

Scott Baker

Environmental Molecular Sciences Laboratory

Montana Smith

Environmental Molecular Sciences Laboratory

Ying Xia

Fudan University

Zhe-Ming Wang

Pacific Northwest National Laboratory

Rick Washburn

Environmental Molecular Sciences Laboratory

Kelly Hatter

Environmental Molecular Sciences Laboratory

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Pacific Northwest National Laboratory

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Richland College

Environmental Molecular Sciences Laboratory

University of Washington

Lawrence Berkeley National Laboratory

Zhejiang University

Chinese Academy of Sciences

Government of the United States of America

Physical Sciences (United States)

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Data for EMSL Project 49672 from October 2020

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2020)

Zhe-Ming Wang Hongfei Wang Ying Wāng Zizwe Chase Libing Zhang

10.25582/data.2020-10.2082443/2360923

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Improvements to amorphous silicon radiation detectors by doping profile changes

IEEE Conference on Nuclear Science Symposium and Medical Imaging (2003)

J. Drewery G. Cho Wan‐Shick Hong K.K. Lee S.N. Kaplan

Application of thick ( approximately 50 mu m) amorphous Si p-i-n diodes as direct radiation detectors for minimum ionizing particles is hampered by the need to apply large bias voltages in order fully to deplete the detecting intrinsic layer, which typically contains 5-10*10/sup 14/ ionizable dangling bonds per cm/sup 3/. A voltage of about 1 kV is required to deplete a 50- mu m-thick detector and a large field (500 kV/cm) builds up at the p/i contact. This leads to an undesirable leakage current and related noise. These problems can be mitigated by addition of thin doped layers within the intrinsic layers. By insertion of thin p-type layers at equal intervals within the intrinsic layer, the required depletion voltage can be reduced by a factor of at least 1/(n+1), where n is the number of layers inserted. This principle is demonstrated for devices approximately 12 mu m in thickness. Electron losses within the p-type layer can be kept to a minimum by choice of a low doping concentration for the introduced p-layers. The electric field at the contacts can also be reduced by doped layers buried in the intrinsic layer close to the main p/i and i/n interfaces.< >

Dangling bond

10.1109/nssmic.1992.301151

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Data for EMSL Project 48379 from March 2020

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2020)

Yongsoon Shin Mark Engelhard Chongmin Wang Jian Zhi Hu Donghai Mei

10.25582/data.2020-03.1970405/2365025

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Alternate Path to the Formation of Co-aligned Hierarchical Mesocrystals

Bulletin of the American Physical Society (2018)

Guomin Zhu Jennifer Solits Jinhui Tao Benjamin A. Legg Chongmin Wang

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Anisotropic Demineralization and Oriented Assembly of Hydroxyapatite Crystals in Enamel: Smart Structures of Biominerals

The Journal of Physical Chemistry B (2008)

Haihua Pan Jinhui Tao Xinwei Yu Lei Fu Jiali Zhang

It is interesting to note that the demineralization of natural enamel does not happen as readily as that of the synthesized hydroxyapatite (HAP), although they share a similar chemical composition. We suggest that the hierarchical structure of enamel is an important factor in the preservation of the natural material against dissolution. The anisotropic demineralization of HAP is revealed experimentally, and this phenomenon is understood by the different interfacial structures of HAP−water at the atomic level. It is found that HAP {001} facets can be more resistant against dissolution than {100} under acidic conditions. Although {100} is the largest surface of the typical HAP crystal, it is {001}, the smallest habit face, that is chosen by the living organisms to build the outer surface of enamel by an oriented assembly of the rodlike crystals. We reveal that such a biological construction can confer on enamel protections against erosion, since {001} is relatively dissolution-insensitive. Thus, the spontaneous dissolution of enamel surface can be retarded in biological milieu by such a smart construction. The current study demonstrates the importance of hierarchical structures in the functional biomaterials.

10.1021/jp802739f

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Data for EMSL Project 60284 from April 2022

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2022)

Wendy J. Shaw Garry W. Buchko Bojana Ginovska Arun Devaraj Sandra D. Taylor

10.25582/data.2022-04.2473158/2221739

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Self‐Assembly and Oriented Growth of Conductive Ni‐CAT‐1 Metal‐Organic Framework at Solid–Liquid Interfaces

Advanced Materials Interfaces (2022)

Sun Hae Ra Shin Jinhui Tao Nathan L. Canfield Mark Bowden Jaeyoung Heo

Abstract Two‐dimensional (2D) conductive metal‐organic frameworks (MOF) represent a unique class of electrode materials with high capacity and power density. Understanding molecular mechanisms and pathways for heterogeneous nucleation of 2D π‐conjugated MOFs is highly desirable for controlling the structure and properties of conductive MOFs on solid substrates. Herein, a systematic study of nucleation and growth of 2D π‐conjugated Ni‐catecholate (Ni‐CAT‐1) MOFs on highly oriented pyrolytic graphite (HOPG) and copper substrates is reported. It is discovered that the nucleation density and growth kinetics of the MOF film can be controlled by varying substrate interactions with the organic linker. Specifically, π–π interactions between the linker and the HOPG dictate lower nucleation density, whereas π–metal interactions between the linker and the copper substrate dictate faster nucleation and higher nucleation densities. These studies reveal the key mechanism for Ni‐CAT‐1 nucleation on different surfaces and provide insights into interfacial control over the growth of other 2D π‐conjugated MOF films on solid substrates to inform synthesis of functional materials.

Linker

Pyrolytic carbon

10.1002/admi.202202031

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A Size-controlled Synthesis of Hollow Apatite Nanospheres at Water–Oil Interfaces

Chemistry Letters (2010)

Wenhui He Jinhui Tao Haihua Pan Xurong Xu Ruikang Tang

Abstract A size-controllable synthesis of hollow structures of apatite in the hexane–water–bis(2-ethylhexyl) sulfosuccinate is presented, and the hollow sphere sizes can be easily regulated within a range of 50–1000 nm. The isotherm curves of the size controls and the roles of different experimental parameters are discussed. This feasible pathway may offer an ideal strategy of the size-controlled synthesis of hollow nanomaterials.

10.1246/cl.2010.674

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Single‐Molecule Determination of the Face‐Specific Adsorption of Amelogenin’s C‐Terminus on Hydroxyapatite

Angewandte Chemie (2011)

Raymond W. Friddle Keith Battle Vasily Trubetskoy Jinhui Tao E. Alan Salter

Mit der Spitze eines Rasterkraftmikroskops, die mit dem Protein Amelogenin (Amel) funktionalisiert ist, kann die Freie Energie der Bindung einzelner Amel-Moleküle an verschiedene Flächen von kristallinem Hydroxyapatit direkt bestimmt werden (siehe Bild). Die experimentellen Werte stimmen gut mit Ergebnissen aus Moleküldynamiksimulationen überein; somit konnten die Schlüsselwechselwirkungen für die flächenspezifische Bindung identifiziert werden.

Amelogenin

10.1002/ange.201100181

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Kinetics and Mechanisms of ZnO to ZIF‐8 Transformations in Supercritical CO₂Revealed by In Situ X‐ray Diffraction

ChemSusChem (2020)

Michael A. Sinnwell Quin R. S. Miller Lili Liu Jinhui Tao Mark Bowden

ZIF-8 was synthesized in supercritical carbon dioxide (scCO2 ). In situ powder X-ray diffraction, ex situ microscopy, and simulations provide an encompassing view of the formation of ZIF-8 and intermediary ZnO@ZIF-8 composites in this nontraditional solvent. Time-resolved imaging exposed divergent physicochemical reaction pathways from previous studies of the growth of anisotropic ZIF-8 core@shell structures in traditional solvents. Synthetically relevant physiochemical properties of scCO2 were integrated into classical nucleation theory, relating interfacial forces, calculated through DFTB+ based molecular dynamics (MD), with 3D nucleation outcomes. The kinetics of crystallization were examined and displayed a characteristic signature of time- and temperature-dependent mechanisms over the extent of the reaction. Lastly, it is shown that subtle factors, such as the extent of reaction and the size/shape of sacrificial templates can tailor ZIF-8 composition and size, eliciting control over hierarchical porosity in a nonconventional green solvent.

Supercritical Carbon Dioxide

10.1002/cssc.202000434

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Citations (13)