Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Andrew J. Trunek"'
Publikováno v:
Earth and Space 2021.
Publikováno v:
Earth and Space 2018.
To demonstrate proof of concept water extraction from simulated Martian regolith, an open reactor design is presented along with experimental results. The open reactor concept avoids sealing surfaces and complex moving parts. In an abrasive environme
Autor:
Kim Kisslinger, Yu Yang, Philip G. Neudeck, Andrew J. Trunek, Andrew A. Woodworth, Michael Dudley, David J. Spry, Ouloide Yannick Goue, Balaji Raghothamachar, Jianqiu Guo
Publikováno v:
Journal of Electronic Materials. 45:2078-2086
Structural perfection of silicon carbide (SiC) single crystals is essential to achieve high-performance power devices. A new bulk growth process for SiC proposed by researchers at NASA Glenn Research Center, called large tapered crystal (LTC) growth,
Autor:
Philip G. Neudeck, Andrew A. Woodworth, Michael Dudley, Balaji Raghothamachar, Andrew J. Trunek, J. A. Powell, David J. Spry
Publikováno v:
Materials Science Forum. :33-36
Lateral expansion of small mixed polytype 4H/6H-SiC and 6H-SiC slivers were realized by hot wall chemical vapor deposition (HWCVD). Small slivers cut from m-oriented (11 ̅00) SiC boule slices containing regions of 4H and 6H-SiC or just single polyty
Publikováno v:
Journal of Crystal Growth. 347:45-48
Transmission electron microscopy and atomic force microscopy were used to study the origin of a preferred nucleation site on the atomically flat 3C-SiC mesas leading to the formation of tetrahedral hillocks. The hillocks exhibit a “wedding cake”
Autor:
Ali Sayir, J. Anthony Powell, David J. Spry, Andrew J. Trunek, Philip G. Neudeck, Andrew A. Woodworth
Publikováno v:
Materials Science Forum. :49-52
In an effort to grow single crystal SiC fibers for seed crystals the following two growth methods have been coupled in this work: traveling solvent and laser heated floating zone to create the solvent-laser heated floating zone (Solvent-LHFZ) crystal
Autor:
Michael A. Mastro, J. A. Powell, Mark E. Twigg, C. R. Eddy, Andrew J. Trunek, Philip G. Neudeck, Yoosuf N. Picard, Joshua D. Caldwell, Ronald T. Holm
Publikováno v:
Journal of Electronic Materials. 39:743-746
Forescattered electron channeling contrast imaging (ECCI) offers the potential for imaging and analyzing extended defects in a scanning electron microscope (SEM). Indeed, it is shown that ECCI is able to determine the Burgers vector of threading disl
Publikováno v:
Materials Science Forum. :593-596
We report on new observations made, when 4H-SiC, Si-face substrate mesas, having either low tilt-angle (< 1°) with steps or step-free top surfaces, were exposed to three separate HCl etching conditions for five minutes at temperatures of 1130°C, 12
Autor:
Liang-Yu Chen, Philip G. Neudeck, Laura J. Evans, Drago Androjna, Andrew J. Trunek, David J. Spry, Gary W. Hunter
Publikováno v:
Materials Science Forum. :1199-1202
This paper reports on initial results from the first device tested of a “second generation” Pt-SiC Schottky diode hydrogen gas sensor that: 1) resides on the top of atomically flat 4H-SiC webbed cantilevers, 2) has integrated heater resistor, and
Publikováno v:
Journal of Crystal Growth. 310:1794-1798
We report on a recently-observed difference in nitrogen doping during the growth of homoepitaxial films grown on on-axis 4H-SiC (SiC—silicon carbide) substrates patterned with arrays of mesas. In particular, the doping of webbed cantilevered region