| 1. |
- Li, Xin, et al.
(author)
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Nanoparticle-assisted DNA nanosensor
- 2008
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In: AOE 2007. - SHENZHEN : AOE. - 9780978921736 ; , s. 84-86
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Conference paper (peer-reviewed)abstract
- We report a sensitive nanosensor based on a micro-fluidic chip and nanoparticles to detect low concentrations of DNA. The emission of CdSe/ZnS-QDs linked with single strand DNAs was quenched by gold nanoparticles linked with the complementary sequences after hybridization. Sensitively detected signal of DNA was obtained from a 100 mu m capillary.
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| 2. |
- Wei, Ming, et al.
(author)
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Using plasmon-resonant gold nanorods as absorption contrast agents for optical coherence tomography
- 2008
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In: 2008 Asia Optical Fiber Communication and Optoelectronic Exposition and Conference, AOE 2008. - 9781557528636
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Conference paper (peer-reviewed)abstract
- Plasmon-resonant gold nanorods were used as high absorption contrast agents for optical coherence tomography (OCT). It is shown that nanorods imaging, with resonance wavelengths overlapping OCT source, can provide more information than conventional OCT images.
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| 3. |
- Zhan, Qiuqiang, et al.
(author)
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A study of mesoporous silica-encapsulated gold nanorods as enhanced light scattering probes for cancer cell imaging
- 2010
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In: Nanotechnology. - : IOP Publishing. - 0957-4484 .- 1361-6528. ; 21:5, s. 055704-
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Journal article (peer-reviewed)abstract
- Mesoporous encapsulation of gold nanorods (GNRs) in a silica shell of controllable thickness (4.5-25.5 nm) was realized through a single-step coating method without any intermediary coating. The dependence of localized surface plasmon resonance (LSPR) extinction spectra of the coated GNRs on the thickness of the silica shell was investigated with both simulation and experiments, which agreed well with each other. It was found that cetyltrimethyl ammonium bromide (CTAB) molecules, which act as surfactants for the GNRs and dissociate in the solution, greatly affect the silica coating. Mesoporous silica-encapsulated GNRs were also shown to be highly biocompatible and stable in bio-environments. Based on LSPR enhanced scattering, mesoporous silica-encapsulated GNRs were utilized for dark field scattering imaging of cancer cells. Biomolecule-conjugated mesoporous silica-encapsulated GNRs were specifically taken up by cancer cells in vitro, justifying their use as effective optical probes for early cancer diagnosis. Mesoporous silica can also be modified with functional groups and conjugated with certain biomolecules for specific labeling on mammalian cells as well as carrying drugs or biomolecules into biological cells.
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| 4. |
- Zhan, Qiuqiang, et al.
(author)
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Improving optical properties of gold nanorods synthesized via the effect of electrolytes
- 2008
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In: 2008 Asia Optical Fiber Communication and Optoelectronic Exposition and Conference, AOE 2008. - 9781557528636
-
Conference paper (peer-reviewed)abstract
- We report an effective method to synthesize gold nanorods with tunable longitudinal extinction peak wavelength from 781 to 955 nm depending on the amount of NaCl added. Those as-prepared gold nanorods are helpful for bioimaging.
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