Results 211 to 220 of about 41,638 (264)
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Comparison of experimental porous silicone implants and porous silicone implants
Graefe's Archive for Clinical and Experimental Ophthalmology, 2011To investigate the extent and pattern of fibrovascular ingrowth of porous silicone sphere implants compared to porous polyethylene implants.Experimental porous silicone sphere implants and porous polyethylene implants were implanted in the left socket of 20 New Zealand white rabbits after enucleation. Fibrovascular ingrowth and maturation was evaluated
JunHyuk, Son +2 more
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Porous Silicon Supercapacitors
2016Continuous miniaturization of electronic devices for portable and wearable applications requires miniaturized and integrated energy storage solutions for which electrochemical double-layer capacitors, the so-called supercapacitors, are among the best candidates.
Ahopelto Jouni +2 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 ...
P Lavallard, R.A Suris
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Porous Silicon from Hydrogenated Amorphous Silicon: Comparison with Crystalline Porous Silicon
MRS Proceedings, 1996AbstractDevice-grade, boron-doped amorphous hydrogenated silicon can be made microporous by anodization in ethanoic HF. The thickness of the porous layer is limited by an instability due to the high resistivity of the material. Amorphous porous silicon exhibits strong room-temperature photoluminescence around 1.5 eV even in samples containing a high ...
J.-N. Chazalviel +3 more
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The Photoluminescence Quenching of Porous Silicon
AIP Conference Proceedings, 2007In this study, time‐depended photoluminescence (PL) quenching of porous silicon (PS) produced in different solutions by electro‐chemical method under UV light was investigated. A two‐time‐constant exponential function characterizing the quenching of PL intensity was developed and found to be in good agreement with experimental results.
Esmer, Kadir +2 more
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Adsorption strains in porous silicon
Physical Review B, 1996X-ray-diffraction observations of strains induced by vapor adsorption are reported for porous silicon single-crystal samples. Two types of porous silicon ($p$ and ${p}^{+}$) with very different pore structure are investigated. A low-pressure contraction is observed in $p$-type samples with spherical pores of about 3-nm diameter.
, Dolino, , Bellet, , Faivre
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Porous silicon biosensors on the advance
Trends in Biotechnology, 2009Biosensor research is a rapidly expanding field with an immense market potential spanning a broad spectrum of applications including biomedical diagnostics, environmental monitoring, veterinary and food quality control. Porous silicon (pSi) is a nanostructured material poised to take centre stage in the biosensor development effort.
Dronov, Roman Vasilyevich +3 more
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Study of Porous Silicon Formation and Silicon-on-Porous Silicon Epitaxy (Computational Modelling)
2000By computer simulation the processes of porous silicon formation and of silicon-onporous silicon epitaxy are studied. The model of electrochemical etching is applied for p+Si and p-Si substrates and takes into account the non-homogeneous surface charge distribution, the thermal generation of holes and quantum confinement effects. The epitaxy is studied
P. L. Novikov +3 more
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The Mechanism of Photohydrosilylation on Silicon and Porous Silicon Surfaces
Journal of the American Chemical Society, 2013Visible or UV light activates H-terminated Si surfaces because of the presence of a photogenerated hole in a Si-Si back-bond. Enhancing the lifetime of this hole at the surface increases reactivity. On the basis of photodynamics and electron transfer theory, the prevalence of two mechanisms of photoactivation (internal photoemission versus interband ...
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Photopatterned Hydrosilylation on Porous Silicon
Angewandte Chemie International Edition, 1998By illumination with white light porous silicon surfaces can be functionalized with alkynes and alkenes (see scheme). The hydrosilylation reactions are very simple to perform and lead to stable, patterned surfaces. This methodology opens new opportunities in the technological applications of porous silicon in both integrated circuits and sensors.
Michael P, Stewart, Jillian M, Buriak
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