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Energy

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Displaying 176 - 200 of 571

Control of thermal expansion in a low-density framework modification of silicon

September 30, 2018
Author(s)
Beekman Mathew, James A. Kaduk, Winnie Wong-Ng, George S. Nolas
The low-density clathrate-II modification of silicon, Si136, contains two distinct cage-like voids large enough to accommodate various types of guest atoms which influence both the host structure and its properties. Although the linear coefficient of

Initiation of flash boiling of multicomponent miscible mixtures with application to transportation fuels and their surrogates

August 16, 2018
Author(s)
Charles T. Avedisian, Kyle Skyllingstad1, Richard E. Cavicchi, Corinne Lippe, Michael J. Carrier
This paper presents methodologies to predict thermodynamic conditions that initiate flash boiling by spontaneous nucleation of liquids consisting of hundreds of miscible liquids and their lower order surrogate mixtures. The methods are illustrated with a

Ba8Cu16As30: A cationic-framework clathrate-I arsenide

August 10, 2018
Author(s)
Kaya Wei, Artem R. Khabibullin, Dean Hobbis, Winnie Wong-Ng, Tieyan Chang, SuYin G. Wang, Igor Levin, Yu-Sheng Chen, Lilia M. Woods, George S. Nolas
Single crystals of clathrate-I Ba8Cu16As30 have been synthesized, and their structure and electronic properties deter-mined using synchrotron-based X-ray diffraction and first principles calculations. The structure is confirmed to be cubic and defined by a

Identity and Access Management for Electric Utilities

July 13, 2018
Author(s)
James J. McCarthy
To protect power generation, transmission, and distribution, energy companies need to control physical and logical access to their resources, including buildings, equipment, information technology (IT), and operational technology (OT). They must

A practical field guide to thermoelectrics: fundamentals, synthesis, and characterization

June 27, 2018
Author(s)
Alex Zevalkink, David M. Smiadak, Joshua Martin, Michael Chabinyc, Olivier Delaire, Jeffrey Blackburn, Andrew Ferguson, Jian Wang, Kirill Kovnir, Laura Schelhas, Stephen D. Kang, Maxwell T. Dylla, G. J. Snyder, Brenden Ortiz, Eric Toberer
The study of thermoelectric materials spans condensed matter physics, materials science and engineering, and solid-state chemistry. The diversity of the participants and the inherent complexity of the topic means that it is difficult, if not impossible, for

Nanoscale photocurrent mapping in perovskite solar cells

June 1, 2018
Author(s)
Yohan Yoon, Dongheon Ha, Ik Jae Park, Paul M. Haney, Sangwook Lee, Nikolai Zhitenev
In this work, we study spatially-resolved generation of photocurrent of methylammonium lead iodide (CH3NH3PbI3) perovskite solar cells to reveal the microscopic effects of annealing temperature and degradation under light exposure. Correlating a novel

Synchrotron Methods for Flexible Hybrid Electronics Industrial Recommendations on Interagency (DoC-DoD-DoE) Partnerships to Address Measurement Challenges Hindering the Flexible Hybrid Electronics Manufacturing Ecosystem

February 12, 2018
Author(s)
Christopher L. Soles, Richard A. Vaia, Ronald Pindak
The round-table participants concluded that facilities at NSLS-II provide immediate opportunities to address some of the critical processing and measurement challenges that are blocking the path towards a sustainable US-centric Flexible Hybrid Electronic

Structural Aspects of Porphyrins for Functional Materials Applications

November 15, 2017
Author(s)
Lawrence P. Cook, Greg Brewer, Winnie Wong-Ng
Porphyrinic compounds comprise a diverse group of materials which have in common the presence of one or more cyclic tetrapyrrole units known as porphyrins in their molecular structures. The resulting aromaticity gives rise to the semiconducting properties

Electrochemical capacitance of CO-terminated Pt(111) is dominated by CO-solvent gap

October 17, 2017
Author(s)
Ravishankar Sundararaman, Marta C. Figueiredo, Marc Koper, Kathleen Schwarz
The distribution of electric fields within the electrochemical double layer depends on both the electrode and electrolyte in complex ways. These fields strongly influence chemical dynamics in the electrode-electrolyte interface, but cannot be measured

Towards Detecting Data Integrity Attacks in Smart Grid

October 6, 2017
Author(s)
Linqiang Ge, Wei Yu, Paul Moulema, Guobin Xu, David W. Griffith, Nada T. Golmie
An effective operation of the smart grid relies on the integration of sensing, computing, and communication. Attempting to disrupt the system, an adversary may launch cyber-attacks against the smart grid by compromising components, including meters

Small Changes Yield Large Results at NIST's Net-Zero Energy Residential Test Facility

September 28, 2017
Author(s)
Arthur H. Fanney, William V. Payne, Joshua D. Kneifel, Lisa C. Ng, Brian P. Dougherty, Tania Ullah, William M. Healy, Farhad Omar
The National Institute of Standards and Technology (NIST) has embarked on a multi-year project to establish that a residence can generate, through the use of renewables, the same amount of energy as it consumes while meeting the energy needs of a typical
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