Band-gap engineering by molecular mechanical strain-induced giant tuning of the luminescence in colloidal amorphous porous silicon nanostructures

2014 ◽  
Vol 16 (46) ◽  
pp. 25273-25279 ◽  
Author(s):  
A. Mughal ◽  
J. K. El Demellawi ◽  
Sahraoui Chaieb
Keyword(s):  
Porous Silicon ◽  
Band Gap ◽  
Silicon Nanoparticles ◽  
Mechanical Strain ◽  
Colloidal Dispersion ◽  
Silicon Nanostructures ◽  
Band Gap Engineering ◽  
Novel Approach ◽  
Porous Silicon Nanoparticles

A novel approach for producing and tuning the emission of a colloidal dispersion of amorphous porous silicon nanoparticles via controlled oxidation and disorder increase.

Oxidation Induced Giant Modulation in the Luminescence of Colloidal Amorphous Porous Silicon Nanoparticles

2015 ◽  
Vol 1748 ◽  
Author(s):  
Jehad K. El Demellawi ◽  
Dalaver H. Anjum ◽  
Sahraoui Chaieb
Keyword(s):  
Porous Silicon ◽  
Amorphous Silicon ◽  
Band Gap ◽  
Silicon Nanoparticles ◽  
Crystalline Silicon ◽  
Local Strain ◽  
Orbital Interactions ◽  
Novel Approach ◽  
Porous Silicon Nanoparticles ◽  
Chemical Procedure

ABSTRACTThe emission of crystalline silicon nanoparticles as well as nanowires can be tuned by varying their diameters. The diameter selection is achieved via a difficult chemical procedure that necessitates filtration which cannot be easily scaled up. Herein, we report a novel approach for producing and tuning the emission of freestanding colloidal of amorphous porous silicon nanoparticles (which should not be confused with bulk amorphous silicon nor with porous silicon) via a controlled oxidation without relying on size of nanoparticles. This oxidation increases local strain in the disordered network that causes orbital interactions which modifies the band-gap but a new hybridization.

Fusogenic porous silicon nanoparticles as a broad-spectrum immunotherapy against bacterial infections

2021 ◽  
Author(s):  
Byungji Kim ◽  
Qinglin Yang ◽  
Leslie W. Chan ◽  
Sangeeta N. Bhatia ◽  
Erkki Ruoslahti ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Broad Spectrum ◽  
Therapeutic Efficacy ◽  
Bacterial Infections ◽  
Silicon Nanoparticles ◽  
First Line ◽  
Gram Positive ◽  
Gram Negative ◽  
Porous Silicon Nanoparticles

RNAi-mediated immunotherapy provided by fusogenic porous silicon nanoparticles demonstrates superior therapeutic efficacy against both Gram-positive and Gram-negative bacterial infections compared with first-line antibiotics.

scholarly journals Tracking the Fate of Porous Silicon Nanoparticles Delivering a Peptide Payload by Intrinsic Photoluminescence Lifetime

2018 ◽  
Vol 30 (35) ◽  
pp. 1802878 ◽  
Author(s):  
Yusung Jin ◽  
Dokyoung Kim ◽  
Hajung Roh ◽  
Sojeong Kim ◽  
Sazid Hussain ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Silicon Nanoparticles ◽  
Porous Silicon Nanoparticles ◽  
Photoluminescence Lifetime

scholarly journals Ex vivo biodistribution of gallium-68-labeled porous silicon nanoparticles

2020 ◽  
Vol 1439 ◽  
pp. 012035
Author(s):  
V K Tishchenko ◽  
V. M. Petriev ◽  
A A Mikhailovskaya ◽  
O A Smoryzanova ◽  
A V Kabashin ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Silicon Nanoparticles ◽  
Ex Vivo ◽  
Porous Silicon Nanoparticles ◽  
Gallium 68 ◽  
Ex Vivo Biodistribution
Sign in / Sign up

Export Citation Format

Share Document