The gate current of MOS tunneling diodes biased at inversion region with different substrate doping is investigated. For p-type substrate (1–5 -cm) devices, the tunneling diode works in the deep depletion region and the inversion current is dominated by the thermal generation rate of minority electrons via traps at Si/SiO2 interface and in the deep depletion region. The activation energy is app...

Infrared emission spectra recorded by airborne or satellite spectrometers can be searched for spectral features to determine the composition of rocks on planetary surfaces. Surface materials are identified by detections of characteristic spectral bands. We show how to define whether to accept an observed spectral feature as a detection when the target material is unknown. We also use remotely s...

The samples of CR-39 polymer (TASTRAK, Bristol, England) were annealled thermally at various temperatures ranging from 100oC to 180oC for 1 hour, in air. FTIR spectroscopy reveals the structural degradation of CR-39 polymer due to thermal annealing above its glass transition temperature. Optical band gap of pristine and thermally annealed samples has been determined using UV-Visible absorption ...

A sample of the β-Ga2O3/wurtzite GaN heterostructure has been grown by dry thermal oxidation of GaN on a sapphire substrate. X-ray diffraction measurements show that the β-Ga2O3 layer was formed epitaxially on GaN. The valence band offset of the β-Ga2O3/wurtzite GaN heterostructure is measured by X-ray photoelectron spectroscopy. It is demonstrated that the valence band of the β-Ga2O3/GaN struc...

The photoconductance of poiycrystaHine silicon films at photon energies smaller than the band gap has been measured as a function of intensity applying a 1.3 pm wavelength semiconductor laser. The observed photosignaI increases superlinearly at low intensities and saturates above about 1.5 W / em 2. This distinct nonlinearity is caused by a significant energy dependence of optical to thermal cr...

Interdigital and combline filters, constructed from commonly available metallic components, such as brass, aluminium, steel etc, invariably are affected by their thermal expansion and contraction. The effect is especially significant in very narrow band filters where the change in the resonant frequency of slabline and coaxial resonators can result in a significant unwanted shift in the pass or...

In this paper, we investigate the performance of turbo codes when applied to a frequency hopped spread spectrum system with partial-band interference, full-band thermal noise, and Rayleigh fading. We consider two types of channel side information: knowledge that the transmitted bit is jammed or unjammed and knowledge of the instantaneous fading amplitudes. Simulation is performed for coherent a...

In this paper, we investigate the performance of turbo codes when applied to a frequency hopped spread spectrum system with partial-band interference, full-band thermal noise, and Rayleigh fading. We consider two types of channel side information: knowledge that the transmitted bit is jammed or unjammed and knowledge of the instantaneous fading amplitudes. Simulation is performed for coherent a...

We investigate thermal emission from a metamaterial wire medium embedded in a dielectric host and highlight two different regimes for efficient emission, respectively characterized by broadband emission near the effective plasma frequency of the metamaterial, and by narrow-band resonant emission at the band-edge in the Bragg scattering regime. We discuss how to control the spectral position and...

Abstract This chapter presents the unique atomic structure and properties of carbon nanotube (CNT). The electronic band structure of carbon nanotube along with their small size and low dimension are responsible for their unique electrical, mechanical, and thermal properties. This chapter summarizes the electronic band structure of one-dimensional CNTs, various transport properties, and their re...