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Search Publications by: Hui Wu (Fed)

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Displaying 126 - 150 of 152

Ordered Structure and Thermal Expansion in Tungsten Bronze Pb 2 K 0.5 Li 0.5 Nb 5 O 15

August 12, 2014
Author(s)
Kun Lin, Yangchun Rong, Hui Wu, Qingzhen Huang, Li You, Yang Ren, Longlong Fan, Jun Chen, Xianran Xing
The crystal structure and thermal expansions of a new tetragonal tungsten bronze (TTB) ferroelectrics Pb 2K 0.5Li 0.5Nb 5O 15 were systematically investigated by selected area electron diffraction (SAED), neutron powder diffraction, synchrotron XRD, and

Phase Transitions and Magnetocaloric Effect in Mn 3 Cu 0.89N d0.96^

August 1, 2014
Author(s)
Jun Yan, Ying Sun, Hui Wu, Qingzhen Huang, Cong Wang, Zaixing Shi, Sihao Deng, Kewen Shi, Huiqing Lu, Lihua Chu
We report the large magnetic entropy change observed in the antiperovskite Mn 3Cu 0.89N 0.96. Based in the heat flow peak measured by differential scanning calorimeter (DSC), the total entropy change according to the structural transition (tetragonal to

Alkali Metal Hydride Modification on Hydrazine Boranes for Improved Dehydrogenation

May 29, 2014
Author(s)
Yong Shen Chua, Qijun Pei, Xiaohua Ju, Wei Zhou, Terrence J. Udovic, Guotao Wu, Zhitao Xiong, Ping Chen, Hui Wu
Hydrazinoboranes of various alkali metals, i.e., NaN 2H 3BH 3 and KN 2H 3BH 3, were synthesized via a liquid approach. The crystal structures of NaN 2H 3BH 3 were determined and their dehydrogenation properties were compared with LiN 2H 3BH 3 and N 2H 4BH

Lithiated Primary Amine-A New Material for Hydrogen Storage

May 26, 2014
Author(s)
Juner Chen, Hui Wu, Guotao Wu, Zhitao Xiong, Ruiming Wang, Hongjun Fan, Wei Zhou, Bin Liu, Yongshen Chua, Xiahua Ju, Ping Chen
A facile method in synthesizing crystalline lithiated amines via ball milling primary amines with LiH unprecedented endothermic dehydrogenation feature in the temperature range of 150-250 Degree}C., showing potentials as a new type of hydrogen storage

Structure and Properties of a-NaFeO 2 -type Ternary Sodium Iridates

February 1, 2014
Author(s)
Kristen Baroudi, Cindi Yim, Hui Wu, Qingzhen Huang, John H. Roudebush, Eugenia Vavilova, Hans-Joachim Grafe, Vladislav Kataev, Bernd Buechner, Huiwen Ji, Changyang Kuo, Zhiwei Hu, Tun-Wen Pi, Chiwen Pao, Jyhfu Lee, Daria Mikhailova, Liu Hao Tjeng, R. J. Cava
The synthesis, structure, and elementary magnetic and electronic properties are reported for layered compounds of the type Na 3-xMIr 2O 6 and Na 3-xM 2IrO 6, where M is a transition metal from the 3d series (M=Zn, Cu, Ni, Co, Fe and Mn). The rhombohedral

Monoammoniate of Calcium Amidoborane - Synthesis, Structure and Hydrogen-Storage Properties

January 9, 2012
Author(s)
Yong Shen Chua, Hui Wu, Wei Zhou, Terrence J. Udovic, Guotao Wu, Zhitao Xiong, Ming Wah Wong, Ping Chen
The monoammoniate of calcium amidoborane, Ca(NH 2BH 3) 2¿NH 3 was synthesized by ball milling an equimolar mixture of CaNH and AB. Its crystal structure has been determined and found to contain a complete dihydrogen-bonded network. Thermal decomposition

Low-Temperature Tunneling and Rotational Dynamics of the Ammonium Cations in (NH 4 ) 2 B 12 H 12

September 1, 2011
Author(s)
Kristina Verdal, Terrence J. Udovic, John J. Rush, Vitalie Stavila, Hui Wu, Wei Zhou, Timothy Jenkins
Low-temperature neutron scattering spectra of diammonium dodecahydro-closo-dodecaborate [(NH4)2B12H12] reveal two NH 4 + rotational tunneling peaks (e.g., 18.5 υeV and 37 υeV at 4 K), consistent with the tetrahedral symmetry and environment of the cations

Metal Amidoboranes

September 1, 2011
Author(s)
Hui Wu, Wei Zhou, Taner Yildirim
Metal amidoboranes, consisting of [NH 2BH 3]- anion and various metal cations, are a new class of compounds that have recently attracted great attentions due to their intriguing crystal structures and novel chemical and physical properties. Similar to

Carbon Capture in Metal-Organic Frameworks - A Comparative Study

April 21, 2011
Author(s)
Jason M. Simmons, Hui Wu, Wei Zhou, Taner Yildirim
Metal organic frameworks (MOFs) have been shown to be excellent materials for storage of carbon dioxide, implying that they could be useful for removal of carbon dioxide from flue gas stacks, however their performance in industrial relevant swing

Dehydrogenation Tuning of Ammine Borohydrides using Double-Metal Cations

March 10, 2011
Author(s)
Yanhui Guo, Hui Wu, Wei Zhou, Xuebin Yu
The strategy of using double-cation to tune the temperature and purity of dehydrogenation of ammine borohydrides is reported. The first double-cation ammine borohydride, Li 2Al(BH 4) 5¿6NH 3, which forms a novel structure with ordered arrangement of Al(NH
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