Now showing items 1-10 of 15
Advances in ab initio thermodynamic studies on metal/oxide interfaces
(WILEY-VCH Verlag, 2011-05)
We provide a brief overview of the advances in ab initio thermodynamic studies on metal/oxide interfaces in this paper. Firstly, the development in interface modeling is briefly outlined. Secondly, the fundamentals of ...
Stress test measurements of lattice-matched InAlN/AlN/GaN HFET structures
(WILEY-VCH Verlag, 2010-06)
InAlN/GaN heterostructures offer some benefits over existing AlGaN/GaN heterostructures for HFET device applications. In addition to having a larger bandgap than typical AlGaN compounds used in HFET devices (with Al < 30%), ...
GaN/air gap based micro-opto-electro-mechanical (MOEM) Fabry-PÉrot filters
(WILEY-VCH Verlag, 2007-06)
Structural and optical properties of Fabry-PÉrot filters (FPFs) with GaN/air gap based distributed Bragg reflectors (DBRs) were studied. Reflectance of GaN/air gap DBRs on sapphire substrate was calculated from the standard ...
Future directions of positron annihilation spectroscopy in low-k dielectric films
(WILEY-VCH Verlag, 2007-09)
Positronium Annihilation Lifetime Spectroscopy (PALS) has become recognized in the microelectronics industry as one of only several methods capable of quantitatively characterizing engineered nanopores in next-generation ...
Femtosecond pump-probe studies of carrier transport and gain dynamics in quantum cascade lasers
(WILEY-VCH Verlag, 2008-01)
Time-resolved pump-probe differential transmission measurements have been performed on various sets of quantum cascade lasers below and above threshold. Bias-, temperature-, and polarization dependent studies enable a ...
Ultrafast dynamics and interlayer thermal coupling of hot carriers in epitaxial graphene
(WILEY-VCH Verlag, 2009-02)
We report the first application of nondegenerate ultrafast pump-probe spectroscopy to investigate the dynamics of hot Dirac Fermions in epitaxial graphene. The DT spectra can be understood in terms of the effect of hot ...
A multi-sensor study of Cl 2 etching of polycrystalline Si
(WILEY-VCH Verlag, 2008-05)
Cl 2 chemistries are the basis for etching of polycrystalline Si and other conductive gate materials in Si CMOS integrated circuit fabrication. It is now well-known that recombination of atomic Cl neutrals on the chamber ...
Coherent control of bound entangled electrons in a CdMnTe quantum well
(WILEY-VCH Verlag, 2008-07)
Ultrafast laser pulses were used to control the spin state of a pair of entangled, donor-bound electrons in a CdMnTe quantum well. The entanglement, mediated by an optically-excited exciton, was characterized by pumpprobe ...
An integrated vapor source with a porous silicon wick
(WILEY-VCH Verlag, 2007-05)
A micro vapor source has been developed for calibrating micro gas chromatograph (ΜGC) systems. By utilizing a porous silicon wick in a micro diffusion system, vapor generation with excellent stability has been achieved. ...
Hot carrier cooling by acoustic phonons in epitaxial graphene by ultrafast pump-probe spectroscopy
(WILEY-VCH Verlag, 2011-04)
We report the application nondegenerate ultrafast mid-infrared spectroscopy to investigate the acoustic phonon cooling process in epitaxial graphene. We show that the power-dependent experimental results match theoretical ...