Zobrazeno 1 - 10
of 33
pro vyhledávání: '"J. Tolev"'
Autor:
Alexander Melnikov, Andreas Mandelis, J. Tolev, K. Ly, R. Lawcock, Koneswaran Sivagurunathan, Xinxin Guo
Publikováno v:
NDT & E International. 86:140-152
Thermal wave radar imaging (TWRI) was developed to detect manufacturing cracks in automotive powder metallurgy components (transmission sprockets) in their green (unsintered) state. The crack detection capability of the TWRI phase was validated by tw
Publikováno v:
Quantitative InfraRed Thermography Journal. 7:35-54
A novel non-destructive, non-contact laser-induced infrared lock-in carrierographic imaging technique based on photocarrier radiometry (PCR) was introduced to characterize industrial multi-crystall...
Autor:
Andreas Mandelis, J. Tolev
Publikováno v:
NDT & E International. 43:283-296
A statistical non-contacting and non-intrusive method for revealing the presence of cracks in unsintered (green) parts manufactured by powder metallurgy (PM) technology was developed based on photothermal radiometry (PTR). The technique relies on the
Publikováno v:
The European Physical Journal Special Topics. 153:271-274
Industrial n-type Si wafers were H+-ion-implanted and the electronic transport properties were studied using photo-carrier radiometry (PCR). A fitting procedure was introduced using a relatively simple 2-layer PCR model in lieu of the more realistic
Publikováno v:
The European Physical Journal Special Topics. 153:317-320
The subject of this research was the dependence of the infrared photocarrier radiometric (PCR) signal on the intensity of the exciting super-bandgap laser beam. It has been shown that the amplitude of the PCR signal is proportional to the intensity t
Autor:
J. Tolev, Andreas Mandelis
Publikováno v:
The European Physical Journal Special Topics. 153:387-390
In this work we introduced two beam photocarrier cross-modulation for creation of an optically driven photonic laser beam modulator using a semiconductor wafer as the active medium. Unlike other laser beam modulators, the process of modulation of an
Publikováno v:
Semiconductor Science and Technology. 21:320-334
A two-beam photo-carrier radiometry (PCR) technique of semiconductors has been developed. The technique operates on the superposition of superband-gap and subband-gap laser beams which results in the cross-modulation of the backscattered subband-gap
Publikováno v:
Journal of Applied Physics. 122:066102
Publikováno v:
Journal of Applied Physics. 121:095101
In this paper, we present a detailed reliability analysis of estimated parameters to a three-layer theoretical model of photothermal radiometry frequency domain signals by applying parameter identifiability conditions from two steel samples coated wi
Autor:
Andreas Mandelis, J. Tolev
Publikováno v:
The European Physical Journal Special Topics. 153:295-297
Single beam laser-induced infrared photocarrier radiometry (PCR) has been applied for measuring transport properties of H + ion-implanted silicon samples. The contrast between the PCR signals inside and outside the area of implantation was investigat