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ORNL researchers invented a detector that uses photoacoustic waves to excite a vibratory sensor coated with unknown molecules. This invention can be used to identify these molecules and study solid, gas, or liquid samples. The device is an advance over other photoacoustic spectroscopy techniques, because it uses a vibratory sensor instead of a resonant chamber and microphone. This approach is …

Sensingindividualcarbon Contour plot of FE current (in nA) from an isolated VACNC, measured during a raster scan of the 2- m- diam probe at a height of 10 m above the substrate surface and biased at 300 V. The probe was scanned in discrete steps of 2 m with a current measurement taken after each step. Sensing Individual Carbon Nanotube Emissions Probe for mapping field emission from individua…

Glass Capacitor for High-Temperature Applications To meet the demand for smaller, lighter capacitors that have high energy densities, an ORNL researcher developed a capacitor made of glass rods that is constructed like insulated wire. This device can be used for power factor correction, high-voltage capacitors, power electronic filters, energy storage, and components in electric and hybrid-electr…

: Fact Sheets

Atomichydrogensensor Atomic Hydrogen Sensor Low-cost sensor for measuring the atomic fraction in highly dissociated hydrogen Atomic hydrogen is a very important constituent for a number of important processes. These include the removal of oxides from GaAs, the effective cleaning of oxides and hydrocarbons from Ge and Si surfaces, the chemical passivation and surface reconstruction of cleaned Si …

: Design, Sensor, Hydrogen...

Method of Rapidly Screening Buffer Layers in Photovoltaics This ORNL invention offers a new method to characterize the electrical properties of a material over a large area. Current methods permit measurement of only one spot of a substrate material at a time; the new method can measure the impedance of many spots on a large substrate simultaneously. This approach is particularly useful for solar…

Under-Prediction of Localized Tally Uncertainties in Monte Carlo Eigenvalue Calculations Brenden Mervin, Scott Mosher, John Wagner, Ivan Maldonado The University of Tennessee, Department of Nuclear Engineering, 310 Pasqua Engineering Building, Knoxville, TN 37996 Oak Ridge National Laboratory, Nuclear Science and Technology Division, PO BOX 2008, Oak Ridge, TN 37831 INTRODUCTI…

ENHS : the encapsulated nuclear heat source - a nuclear energy concept for emerging worldwide energy markets. ICONE Conference Paper American Society of Mechanical Engineers (ASME) owns all copyright and publication subject to this requirement: Verbatim reproduction of this paper by anyone will be permitted by ASME provided appropriate credit is given to the author(s) and ASME. 1 …

Fs Ees Energy and Engineering Sciences The Energy and Engineering Sciences Directorate at Oak Ridge National Laboratory conducts applied research and development programs that directly contribute to national goals of increasing energy production, improving energy transmission, and reducing energy consumption. These three goals form the foundation of a secure energy and environmental future. R…

The Encapsulated Nuclear Heat Source for Proliferation-Resistant Low-Waste Nuclear Energy Approved for public release; further dissemination unlimited Preprint UCRL-JC-143186 The Encapsulated Nuclear Heat Source for Proliferation-Resistant Low-Waste Nuclear Energy N. Brown, M. Carelli, L. Conway, M. Dzodzo, E. Greenspan, Q. Hossain, D. Saphier, H. Shimada, J. Sienicki, and D. Wade This …

Superhydrophobic Coating for Evaporative Purification and Minerals Extraction Researchers at ORNL are using their superhydrophobic coating technology to tackle the age-old problem of obtaining potable water. In the process, they have also developed a cost-effective method to extract industrial minerals and metals such as potassium, lithium, and magnesium from the seas and other waters. Potable w…

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: Mineral, Metal, Superhydrophobic...
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