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Search Publications by: Wei-Chang D. Yang (Fed)

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Displaying 1 - 9 of 9

Dynamic Structure of Active Sites in Ceria-Supported Pt Catalysts for the Water Gas Shift Reaction

February 10, 2021
Yuanyuan Li, Matthew Kottwitz, Joshua L. Vincent, Zongyuan Liu, Michael J. Enright, Lihua Zhang, Jiahao Huang, Sanjaya D. Senanayake, Wei-Chang Yang, Peter A. Crozier, Ralph G. Nuzzo, Anatoly I. Frenkel
Oxide-supported noble metal catalysts have been extensively studied for decades for the water gas shift (WGS) reaction, a catalytic transformation central to a host of large volume processes that variously utilize or produce hydrogen. There remains

Endothermic reaction at room temperature enabled by deep-ultraviolet plasmons

November 2, 2020
Canhui Wang, Wei-Chang Yang, David Raciti, Alina Bruma, Ronald Marx, Amit Agrawal, Renu Sharma
Sequestration and conversion of CO2 is a promising method for remedying climate change. However, current technologies remain limited due to infeasible system demands and outputs, such as high-temperature/pressure conditions, use of precious metals, or low

Towards data-driven next-generation transmission electron microscopy

October 26, 2020
Steven R. Spurgeon, Colin Ophus, Lewys Jones, Amanda K. Petford-Long, Sergei Kalinin, Matthew J. Olszta, Rafal Dunin-Borkowski, Norman Salmon, Khalid Hattar, Wei-Chang Yang, Renu Sharma, Yingge Du, Ann Chiaramonti Debay, Haimei Zheng, Edgar C. Buck, Libor Kovarik, R. Lee Penn, Dongsheng Li, Xin Zhang, Mitsuhiro Murayama, Mitra D. Taheri
The rapidly evolving field of electron microscopy touches nearly every aspect of modern life, underpinning impactful materials discoveries in applications such as quantum information science, energy, and medicine. As the field enters a new decade, a

Unveiling defect-mediated charge-carrier recombination at the nanometer scale in polycrystalline solar cells

November 20, 2019
Yohan Yoon, Wei-Chang Yang, Dongheon Ha, Paul M. Haney, Daniel Hirsch, Heayoung Yoon, Renu Sharma, Nikolai Zhitenev
In this work, we employ two techniques, near-field scanning photocurrent microscopy (NSPM) and transmission electron microscope based cathodoluminescence spectroscopy (TEM-CL), to analyze the nanoscale electrical and optical properties of CdTe solar cells

Low-temperature growth of carbon nanotubes catalyzed by sodium-based ingredients

May 27, 2019
Renu Sharma, Richard Li, Erica F. Antunes, Estekke Cohen, Akira Kudo, Luiz Acauan, Wei-Chang D. Yang, Chih-Ming Wang, Kehang Cui, Andrew Liotta, Ananth G. Rajan, Jules Gardner, David C. Bell, Michael S. Strano, James A. Liddle, Brian L. Wardle
Nanoparticle-catalytic synthesis of carbon nanostructures is an attractive route for producing 1-dimensional carbon nanomaterials, such as carbon nanotubes1 (CNTs), in large enough quantities for their multifunctional capabilities to be applied in

In situ Atomic-Scale Probing of Reduction Dynamics of 2-Dimensional Fe2O3 Nanostructures

December 13, 2016
Wenhui Zhu, Jonathan P. Winterstein, Wei-Chang Yang, Lu Yuan, Renu Sharma, Guangwen Zhou
Atomic-scale structure dynamics and phase transformation pathway was probed, in situ, during the reduction of bi-crystalline Fe2O3 nanostructures in H2 by using an environmental transmission electron microscope. It was found that the reduction commenced