| Title: | Adsorption and desorption characteristics of gradient distributed Bragg reflector porous silicon layers |
| Author(s): | Um S; Lee SG; Woo HG; Cho S; Sohn H; |
| Address: | "Department of Chemistry, Chosun University, Gwangju 501-759, Korea" |
| ISSN/ISBN: | 1533-4880 (Print) 1533-4880 (Linking) |
| Abstract: | "Adsorption and desorption characteristics of gradient distributed Bragg reflector (DBR) porous silicon (PSi) were investigated under the exposure of organic vapors. Gradient DBR PSi whose average pore size decreased as the lateral distance from the Pt electrode increased was generated by using an asymmetric etching configuration. The reflection resonances were measured as a function of lateral distance from a point closest to the plate Pt electrode to a position on the silicon surface. Two types of gradient DBR PSi (H- and HO-terminated gradient DBR PSi) were used in this study. The detection of volatile organic compounds (VOCs) using the gradient DBR PSi had been achieved. When the vapor of VOCs condensed in the nanopores, the gradient DBR PSi modified with hydrophobic and hydrophilic functionality exhibited different pore adsorption and desorption characteristics" |
| Keywords: | Absorption Equipment Design Equipment Failure Analysis *Lenses Nanostructures/*chemistry/*ultrastructure Particle Size Porosity Refractometry/*instrumentation Silicon/*chemistry Volatile Organic Compounds/*analysis/chemistry; |
| Notes: | "MedlineUm, Sungyong Lee, Sung Gi Woo, Hee-Gweon Cho, Sungdong Sohn, Honglae eng Research Support, Non-U.S. Gov't 2013/05/08 J Nanosci Nanotechnol. 2013 Jan; 13(1):288-93. doi: 10.1166/jnn.2013.6950" |
