Silicon nanoparticle-functionalized fiberglass pads for sampling

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3563535· OSTI ID:21538180

Mantey, Kevin; Nayfeh, Munir H ^[1]; Al-Hreish, Bahjat; Boparai, Jack ^[2]; Kumar, Ashok; Stephenson, Larry D; Nelson, Andrew J ^[3]; Alrokayan, Salman A; Abu-Salah, Khalid M ^[4]

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1. Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
2. Nanosi Advanced Technoloies, Inc., 600 Hazelwood Dr., Champaign, Illinois 61820 (United States)
3. ERDC-CERL, P.O. Box 9005, Champaign, Illinois 61826-9005 (United States)
4. King Abdullah Institute for Nanotechnology, KSU, P.O. Box 2454, Riyadh 11451 (Saudi Arabia)

We used wet treatment to immobilize luminescent silicon nanoparticles on industrial glass fibers to impart optical and chemical functions to the fiber. Carpets or pads consisting of thousands of fibers are processed in parallel, enhancing the sensitivity of detection and the sampled volume. Treated pads exhibit strong luminescence, characteristic of the luminescence of the particles; showing no shift, broadening, or reduction of quantum efficiency. We demonstrate that drawing material by the pad due to physical adsorption can be reversed. We also demonstrate that allylamine can be covalently attached by photoinduced irradiation reactions, which results in imprinting the amine emission spectrum, providing spectral recognition. The imprint accompanied with a blue-shifting of the luminescence spectrum of the probe, allowing examination of the effect of termination on the nanoparticle structure. The shift is found to be consistent with an increase in the bandgap of the Si nanoparticle and is consistent with Quantum Monte Carlo calculations. In addition to sampling, the nano probe pad has the potential to enable a variety of biomedical applications through subsequent attachment.

• OSTI ID: 21538180
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 6; Other Information: DOI: 10.1063/1.3563535; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
DETECTION
DRAWING
ELECTRON MICROSCOPY
EMISSION SPECTRA
FIBERGLASS
FIBERS
GLASS
IRRADIATION
LUMINESCENCE
MONTE CARLO METHOD
NANOSTRUCTURES
PARTICLES
QUANTUM EFFICIENCY
SAMPLING
SEMICONDUCTOR MATERIALS
SENSITIVITY
SILICON
SPECTRAL SHIFT
STRAINS
CALCULATION METHODS
COMPOSITE MATERIALS
EFFICIENCY
ELEMENTS
EMISSION
FABRICATION
MATERIALS
MATERIALS WORKING
MICROSCOPY
PHOTON EMISSION
SEMIMETALS
SORPTION
SPECTRA