Porous silicon and its applications in biology and medicine

Ksenofontova, O. I.; Васин, А. В.; Егоров, Владимир В.; Bobyl, A. V.; Soldatenkov, F. Yu.; Теруков, Е. И.; Ulin, V. P.; Ulin, N. V.; Киселев, О. И.

doi:10.1134/s1063784214010083

Cited by 57 publications

(20 citation statements)

References 66 publications

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“…whose thickness is comparable with that of the space charge layer in the initial semiconductor (equal to several nanometers [5]). The transverse sizes of the pore channels in meso porous silicon commonly vary within the range from 5 to 30 nm, which makes it possible to accommodate large organic molecules, and the large specific surface area measured in hundreds of m 2 /g and the possibility of imparting both hydrophobic and hydrophilic prop erties to the material provide its high adsorption capacity and capacity for selective adsorption [6].…”

Section: Introductionmentioning

confidence: 99%

Surface of porous silicon under hydrophilization and hydrolytic degradation

Ulin

Soldatenkov

et al. 2014

Semiconductors

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Section: Introductionmentioning

confidence: 99%

Surface of porous silicon under hydrophilization and hydrolytic degradation

Ulin

Soldatenkov

et al. 2014

Semiconductors

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“…Porous silicon is a promising material for the creation of biosensors. Due to the developed surface of porous silicon, it can be used as a biosensitive layer [1,2].…”

Section: Introductionmentioning

confidence: 99%

Electrical Properties of Porous Silicon as a Biosensor Material

Ganichkina

Latukhina

2020

J-BPE

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The electrical properties of porous silicon nanocomposites with various glucose solutions were studied. The current-voltage characteristics (I-V) of glucose solutions in water and tear fluid, as well as porous silicon samples of various porosities saturated with these solutions were measured. The porosity and glucose content in the pores were determined by the gravimetric method. Measurements of the I-V characteristics and photoconductivity of nanocomposites showed that their electrical conductivity appreciably depends on the glucose content in solutions.

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“…Recently, porous silicon nanoparticles (PSN) have been used for the tunable delivery of camptothecin, a small therapeutic molecule, where PSN acted as a therapeutics nanocarrier into the electrospun composite of poly fibers [14]. Additionally, mesoporous Si has been investigated for applications in biology and medicine, and an example is a porous silicon container employed to enclose the drug and release it in a controlled manner [15]. Previously, PS MFs have been fabricated to work as red-infrared filters coupled with a silicon photodetector, where the localized mode can be tuned by changing the optical path of the defect layer [16].…”

mentioning

confidence: 99%

Porous Si-SiO2 UV Microcavities to Modulate the Responsivity of a Broadband Photodetector

et al. 2020

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Porous Si-SiO2 UV microcavities are used to modulate a broad responsivity photodetector (GVGR-T10GD) with a detection range from 300 to 510 nm. The UV microcavity filters modified the responsivity at short wavelengths, while in the visible range the filters only attenuated the responsivity. All microcavities had a localized mode close to 360 nm in the UV-A range, and this meant that porous Si-SiO2 filters cut off the photodetection range of the photodetector from 300 to 350 nm, where microcavities showed low transmission. In the short-wavelength range, the photons were absorbed and did not contribute to the photocurrent. Therefore, the density of recombination centers was very high, and the photodetector sensitivity with a filter was lower than the photodetector without a filter. The maximum transmission measured at the localized mode (between 356 and 364 nm) was dominant in the UV-A range and enabled the flow of high energy photons. Moreover, the filters favored light transmission with a wavelength from 390 nm to 510 nm, where photons contributed to the photocurrent. Our filters made the photodetector more selective inside the specific UV range of wavelengths. This was a novel result to the best of our knowledge.

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Porous silicon and its applications in biology and medicine

Cited by 57 publications

References 66 publications

Surface of porous silicon under hydrophilization and hydrolytic degradation

Surface of porous silicon under hydrophilization and hydrolytic degradation

Electrical Properties of Porous Silicon as a Biosensor Material

Porous Si-SiO2 UV Microcavities to Modulate the Responsivity of a Broadband Photodetector

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