Porosification-reduced optical trapping of silicon nanostructures
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 5835-5839 |
| Journal / Publication | Nanoscale |
| Volume | 4 |
| Issue number | 19 |
| Publication status | Published - 2012 |
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Abstract
Metal-assisted chemical etching (MACE) was carried out to fabricate solid silicon nanowires (s-SiNWs) and mesoporous silicon nanowires (mp-SiNWs). Total reflection and transmission were measured using an integrated sphere to study optical properties of the MACE-generated silicon nanostructures. Without NW aggregation, mp-SiNWs vertically standing on a mesoporous silicon layer trap less light than s-SiNWs over a wavelength range of 400-800 nm, owing to porosification-enhanced optical scattering from the rough inner surfaces of the mesoporous silicon skeletons. Porosification substantially weakens the NW mechanical strength; hence the elongated mp-SiNWs aggregate after 30 min etching and deteriorate optical trapping. © 2012 The Royal Society of Chemistry.
Citation Format(s)
Porosification-reduced optical trapping of silicon nanostructures. / To, Wai-Keung; Fu, Junxue; Yang, Xiongbo; Roy, V. A L; Huang, Zhifeng.
In: Nanoscale, Vol. 4, No. 19, 2012, p. 5835-5839.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
