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Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. The colloid is coloured usually either wine red or blue-purple . Due to their optical, electronic, and molecular-recognition properties, gold nanoparticles are the subject of substantial research, with many potential or promised applications in a wide variety of areas, including electron microscopy, electronics, nanotechnology, materials science, and biomedicine.
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Hydrogen-terminated silicon surface is a chemically passivated silicon substrate where the surface Si atoms are bonded to hydrogen. The hydrogen-terminated surfaces are hydrophobic, luminescent, and amenable to chemical modification. Hydrogen-terminated silicon is an intermediate in the growth of bulk silicon from silane:
Porous silicon is a form of the chemical element silicon that has introduced nanopores in its microstructure, rendering a large surface to volume ratio in the order of 500 m2/cm3.
Gold Nanocages are hollow, porous gold nanoparticles ranging in size from 10 to over 150 nm. They are created by reacting silver nanoparticles with chloroauric acid (HAuCl4) in boiling water. Whereas gold nanoparticles absorb light in the visible spectrum of light (at about 550 nm), gold nanocages absorb light in the near-infrared, where biological tissues absorb the least light. Because they are also biocompatible, gold nanocages are promising as a contrast agent for optical coherence tomography. Gold nanocages also absorb light and heat up (Photothermal effect), killing surrounding cancer cells. Nanocages have been functionalized with cancer-specific antibodies.
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References
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- ↑ Sailor, Michael J. (2012). Porous silicon in practice preparation, characterization and applications. Weinheim: Wiley-VCH. p. 249. ISBN 9783527313785.
- ↑ Lin, V.S.Y.; Motesharei, K.; Sailor, M. J.; Ghadiri, M. R. (31 October 1997). "A Porous Silicon-Based Optical Interferometric Biosensor". Science. 278 (5339): 840–843. Bibcode:1997Sci...278..840L. doi:10.1126/science.278.5339.840. PMID 9346478.
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- ↑ Park, J.H.; Gu, L.; Rouslahti, E.; Bhatia, S.N.; Sailor, M.J. (22 February 2009). "Biodegradable luminescent porous silicon nanoparticles for in vivo applications". Nature Materials. 8 (4): 331–336. Bibcode:2009NatMa...8..331P. doi:10.1038/nmat2398. PMC 3058936 . PMID 19234444.
- ↑ Gu, L.; Hall, D.J.; Qin, Z.; Anglin, E.; Joo, J.; Mooney, D.J.; Howell, S.B.; Sailor, M.J. (12 August 2013). "In vivo time-gated fluorescence imaging with biodegradable luminescent porous silicon nanoparticles". Nature Communications. 4: 2326. Bibcode:2013NatCo...4.2326G. doi:10.1038/ncomms3326. PMC 4154512 . PMID 23933660.
- ↑ Sailor, M.J.; Link, J.R. (10 Feb 2005). "Smart Dust: nanostructured devices in a grain of sand". Chemical Communications (11): 1375–1383. doi:10.1039/b417554a. PMID 15756310.
- ↑ Dovree, J.R.; Derfus, A.M.; Bhatia, S.N.; Sailor, M.J. (7 November 2004). "Manipulation of liquid droplets using amphiphilic, magnetic 1-D photonic crystal chaperones". Nature Materials. 3 (12): 896–899. doi:10.1038/nmat1253. PMID 15531887. S2CID 8177935.
- ↑ Link, J.R.; Sailor, M.J. (June 19, 2003). "Smart Dust: Self-assembling, self-orienting photonic crystals of porous Si". Proceedings of the National Academy of Sciences. 100 (19): 10607–10610. Bibcode:2003PNAS..10010607L. doi: 10.1073/pnas.1233824100 . PMC 196851 . PMID 12947036.
- ↑ Schmedake, T.A.; Cunin, F.; Link, J.R.; Sailor, M.J. (16 September 2002). "Standoff detection of chemicals using porous silicon 'Smart Dust' particles". Advanced Materials. 14 (18): 1270–1272. doi:10.1002/1521-4095(20020916)14:18<1270::AID-ADMA1270>3.0.CO;2-R.
- ↑ "Harvey Mudd College Alumni Association - Award Recipients". Harvey Mudd College.
- ↑ "Office of Post Doctoral & Visiting Scholar Affairs" . Retrieved 26 October 2014.
- ↑ Dabney, Michael. "Georgia Sadler And Michael Sailor Honored As Outstanding Faculty Mentors To Students". UCSD News. Retrieved 26 October 2014.
- 1 2 3 4 5 "Michael Sailor Ph.D: Executive Profile & Biography - Businessweek". Bloomberg Businessweek.
- ↑ McDonald, Kim. "UCSD Student Wins $50,000 Collegiate Inventors Grand Prize". UCSD News. Retrieved 26 October 2014.
- ↑ Paiva, Rini. "2003 winners of Collegiate Inventors Competition announced in NYC". EurekAlert.
- ↑ "Past Fellows". Alfred Sloan B. Foundation.
- ↑ "Michael J. Sailor". Arnold and Mabel Beckman Foundation. Retrieved 9 March 2017.