Results 121 to 130 of about 568,615 (149)
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Annual Review of Plant Physiology and Plant Molecular Biology, 1999
▪ Abstract Silicon is present in plants in amounts equivalent to those of such macronutrient elements as calcium, magnesium, and phosphorus, and in grasses often at higher levels than any other inorganic constituent. Yet except for certain algae, including prominently the diatoms, and the Equisetaceae (horsetails or scouring rushes), it is not ...
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▪ Abstract Silicon is present in plants in amounts equivalent to those of such macronutrient elements as calcium, magnesium, and phosphorus, and in grasses often at higher levels than any other inorganic constituent. Yet except for certain algae, including prominently the diatoms, and the Equisetaceae (horsetails or scouring rushes), it is not ...
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Physical Review Letters, 1990
The presence of Cu atoms in p-type Si is detected via their characteristic electric-field gradients measured at the radioactive acceptor $^{111}\mathrm{In}$${/}^{111}$Cd by the perturbed \ensuremath{\gamma}\ensuremath{\gamma} angular correlation technique.
Keller, R. +5 more
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The presence of Cu atoms in p-type Si is detected via their characteristic electric-field gradients measured at the radioactive acceptor $^{111}\mathrm{In}$${/}^{111}$Cd by the perturbed \ensuremath{\gamma}\ensuremath{\gamma} angular correlation technique.
Keller, R. +5 more
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Local Oscillations of Silicon–Silicon Bonds in Silicon Nitride
Technical Physics Letters, 2018Raman spectra of films of nearly stoichiometric amorphous silicon nitride (a-Si3N4) reveal a contribution due to local oscillations of silicon–silicon (Si–Si) bonds. This observation directly confirms that the almost stoichiometric a-Si3N4 contains Si–Si bonds, which, according to theoretical predictions, act as electron and hole traps that are ...
Vladimir A. Gritsenko +3 more
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Silicon Photonics: silicon nitride versus silicon-on-insulator
Optical Fiber Communication Conference, 2016Silicon photonics typically builds on a silicon-on-insulator based high-index-contrast waveguide system. Silicon nitride provides an alternative moderate-index-contrast system that is manufacturable in the same CMOS environment. This paper discusses the relative benefits of both platforms.
Bart Kuyken +9 more
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Amorphous silicon: The other silicon [PDF]
Ulis 2011 Ultimate Integration on Silicon, 2011 While crystalline silicon FET's are the key enablers for the integrated circuit field, amorphous silicon thin film transistors are the key semiconductor of the large-area electronics field, also known as “macroelectronics.” This talk reviews the basic properties of amorphous silicon, and then outlines research trends, driven in large part by new ...
Lin Han +7 more
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The donor concentration in silicon implanted silicon and silicon on sapphire [PDF]
IEEE SOS/SOI Technology Conference, 2003 Summary form only given. The effective number of carriers in self-implanted silicon on sapphire is studied. The penetration of the materials by the double solid phase epitaxy method (DSPE) is discussed. In order to measure the depth distribution of the implantation-induced donors, silicon was implanted in 2 ohm cm n ...
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From Silicon Cell to Silicon Human
2011This chapter discusses the silicon cell paradigm , i.e. the existing systems biology activity of making experiment-based computer replica of parts of biological systems. Now that such mathematical models are accessible to in silico experimentation through the World-Wide Web , a new future has come to biology.
Frank J. Bruggeman +9 more
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2005
This article deals with generalities and definitions of porous silicon (PSi): fabrication techniques, structural properties, chemical properties, electronic properties, electrical properties, optical properties, and actual or potential applications of PSi.
Gaburro, Zeno +2 more
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This article deals with generalities and definitions of porous silicon (PSi): fabrication techniques, structural properties, chemical properties, electronic properties, electrical properties, optical properties, and actual or potential applications of PSi.
Gaburro, Zeno +2 more
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European Journal of Clinical Investigation, 2010
Since the 1960s, silicone implants have been successfully used for breast augmentation and reconstruction. However, safety issues regarding the use of silicone have led to a moratorium by the US Food and Drug Administration between 1992 and 2006.To date, although the moratorium has been removed and women overwhelmingly prefer silicone over saline ...
Steven D. Hajdu +3 more
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Since the 1960s, silicone implants have been successfully used for breast augmentation and reconstruction. However, safety issues regarding the use of silicone have led to a moratorium by the US Food and Drug Administration between 1992 and 2006.To date, although the moratorium has been removed and women overwhelmingly prefer silicone over saline ...
Steven D. Hajdu +3 more
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Silicon needles in porous silicon
Thin Solid Films, 1996Abstract A model is presented which explains the high degree of linear polarization of luminescence which was observed in porous silicon under non-resonant excitation. Porous silicon is supposed to be composed of elongated nanocrystals. We show that because of the anisotropy of the depolarizing field in silicon needles polarized light excites ...
R.A Suris, P Lavallard
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