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Displaying 7226 - 7250 of 143780

Development of NbN THz HEB Mixer Devices and Films

October 12, 2021
Author(s)
Eyal Gerecht, V. A. Bhupathiraju, John Nicholson, Dazhen Gu, Yan Zhuang, Fernando R. Morales, Xin Zhao, Ric Zannoni, Sigfrid Yngvesson
Until recently, the thin-film NbN samples used by most PHEB research groups across the world have been produced in Moscow(MSPU). We have developed a process for fabricating thin NbN films at the National Institute of Standards and Technology (NIST) in

Dielectric Function of Wurtzite GaN and AIN Thin Films

October 12, 2021
Author(s)
L X. Benedict, Eric L. Shirley, T Wethkamp, K Wilmers, C Cobet, N Esser, W Richter, M Cardona
We present measurements and calculations of the dielectric function of wurtzite GaN and AIN. Spectroscopic ellipsometry was used to determine ε (omega) of thin film samples in the energy range from 3 eV to 9.8 eV. Calculations of ε (omega) for the bulk

Displacive Phase Transition in SrTiO 3 Thin Films Grown on Si(001)

October 12, 2021
Author(s)
F S. Aguirre-Tostado, A Herrera-Gomez, Joseph Woicik, R Droopad, Z Yu, D G. Schlom, E Karapetrova, P Zschack
Polarization dependent x-ray absorption fine structure measurements performed at the Ti K edge together with x-ray diffraction have been used to study the local structure in SrTiO3 thin films grown epitaxially on Si(001). SrTiO3 layers on Si(001) are found

Dopant Location Identification in Nd 3+ -Doped TiO 2 Nanoparticles

October 12, 2021
Author(s)
W Li, A I. Frenkel, Joseph Woicik, C Ni, S I. Shah
Doping large bandgap semiconductors is typically done in order to enhance photocatalytic, photovoltaic and other chemical and optoelectronic properties. The identification of dopant position and its local environment is essential to exploring the doping

Effects of Argon Gas-Cluster Ion Beam Processing on Surface Roughness, Crystalline Orientation Texture, Magnetic, and Giant Magnetoresistance Properties of A-Fe 2 O 3 Bottom Spin-Valves

October 12, 2021
Author(s)
S Bae, J H. Judy, P J. Chen, L Gan, William F. Egelhoff Jr., J Hautala
The effects of gas-cluster ion beam (GCIB) processing on the surface roughness, crystalline orientation texture, magnetic, and giant magneto resistance (GMR) properties of exchange biased anti-ferromagnetic (AF) oxide α-Fe 2O 3 bottom spin-vales (BSV) have

Effects of Aspect Ratio of Multi-Walled Carbon Nanotube on Flammability Properties of Polymer Nanocomposites

October 12, 2021
Author(s)
Bani Cipiriano, Takashi Kashiwagi, Srinivasa R. Raghavan, Ying Yang, E A. Grulke, Kazuya Yamammoto, John R. Shields, Jack F. Douglas
The effects of the aspect ratio of multi-walled carbon nanotube (MWNT) on viscoelastic properties and flammability properties of PS/MWNT nanocomposites are studied with two different MWNTs having average aspect ratios of 49 and 150. While no significant

Effects of Bond Coat Surface-Roughness on Residual Stresses of Thermal Barrier Coating Systems

October 12, 2021
Author(s)
C H. Hsueh, J Haynes, M Lance, P Becher, M Ferber, Stephen A. Langer, W Carter, W R. Cannon, Lin-Sien H. Lum
The adherence of plasma-sprayed thermal barrier coatings (TBCs) is dependent on mechanical interlocking at the interface between the ceramic top coat and the underlying metallic bond coat. A rough bond coat surface is required in order to establish
Displaying 7226 - 7250 of 143780
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