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Journal of Applied Physics Collection (168 Books)


 
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Journal of Applied Physics : Ultrafast heating and resolution of r...

By: M. M. Aziz, M. R. Belmont, and C. D. Wright

Description: This work presents an analytical study of the thermally activated amorphous-to-crystalline phase-change process when the heating source has a delta function temporal profile. This simulates the case of ultrafast heating where crystallization in the amorphous phase-change medium occurs during cooling. The study produced closed-form expressions that predict the necessary peak temperature, and hence energy density, in the phase-change medium for successful crys...

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Journal of Applied Physics : Effect of iron in silicon feedstock o...

By: G. Coletti, R. Kvande, V. D. Mihailetchi, L. J. Geerligs, L. Arnberg et al

Description: The effect of iron contamination in multicrystalline silicon ingots for solar cells has been investigated. Intentionally contaminated p- and n-type multicrystalline silicon ingots were grown by adding 53 ppm by weight of iron in the silicon feedstock. They are compared to reference ingots produced from nonintentionally contaminated silicon feedstock. p-type and n-type solar cell processes were applied to wafers sliced from these ingots. The as-grown minority...

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Journal of Applied Physics : Magnetic ordering of the Fe/Si interf...

By: I. I. Pronin, M. V. Gomoyunova, D. E. Malygin, D. V. Vyalikh, Yu. S. Dedkov et al

Description: High-resolution photoelectron spectroscopy with synchrotron radiation and magnetic linear dichroism in Fe 3p core-level photoemission has been used to study both the initial stages of Fe/Si(111)7×7 and Fe/Si(100)2×1 interface formation and their ferromagnetic ordering. The correlation between the phase composition, electronic structure, and magnetic behavior of the interfaces has been established. It is shown that in-plane ferromagnetic ordering of the inter...

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Journal of Applied Physics : Charge dynamics in ionic polymer meta...

By: Maurizio Porfiri

Description: In this paper, we study the charge dynamics in ionic polymer metal composites (IPMCs) in response to a voltage difference applied across their electrodes. We use the Poisson–Nernst–Planck equations to model the time evolution of the electric potential and the concentration of mobile counterions. We present an analytical solution of the nonlinear initial-boundary value problem by using matched asymptotic expansions. We determine the charge and electric potent...

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Journal of Applied Physics : Optical properties of Yb3+ doped Lu3A...

By: Alessandra Toncelli, Mohamed Alshourbagy, and Mauro Tonelli

Description: Yb doped Lu3Al5O12 single crystal fibers has been grown with various Yb3+ ion concentrations: 2%, 5%, 10%, 15%, and 50% Yb doping levels. The diameter of the fibers is around 3 mm and their length is up to 110 mm. The fibers have been annealed in air at 1400 °C for 24 h to remove Yb2+ produced during the growth in the fibers. Structural characterization by x-ray diffraction method has been performed to confirm the monocrystalline phase and the orientation of...

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Journal of Applied Physics : Synergic effect of carbon black and s...

By: Jinsong Leng, Haibao Lv, Yanju Liu, and Shanyi Du

Description: This paper presents a study on the effect of carbon black (CB) and short carbon fibers (SCFs) on shape memory polymer (SMP) actuation by applying electric current. The coexistence of CB and SCF electrically conductive networks, supporting each other, resulting in significant improvement of electrical properties, was supported by optical microscopy, while the roles of particulate and fibrous fillers were distinguished by scanning electron microscopy. In seque...

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Journal of Applied Physics : The temperature dependence of the ref...

By: Naoki Watanabe, Tsunenobu Kimoto, and Jun Suda

Description: The temperature dependence of the refractive indices of GaN and AlN was investigated in the wavelength range from the near band edge (367 nm for GaN and 217 nm for AlN) to 1000 nm and the temperature range from room temperature to 515 °C. Optical interference measurements with vertical incident configuration were employed to precisely evaluate the ordinary refractive indices.

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Journal of Applied Physics : Photobleaching-free infrared near-fie...

By: J. Generosi, G. Margaritondo, M. Kropf, H. Hirling, S. Catsicas et al

Description: High-resolution detection of specific molecules in cells is a major challenge in biology. We show that infrared scanning near-field microscopy can detect the spatial distribution of α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid–type glutamate receptor clusters on hippocampal neurons. The GluR2 subunits were labeled with the die Alexa 488 and high-resolution infrared micrographs were taken at 6.25 μm. The absence of photobleaching makes this approach ...

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Journal of Applied Physics : Erratum: Frequency response of cantil...

By: Cornelis A. Van Eysden and John E. Sader

Description:

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