Home > News > So, near and yet so far: Stable HGNs for Raman
April 1st, 2015
So, near and yet so far: Stable HGNs for Raman
Abstract:
Researchers have found a way to stabilise hollow gold nanospheres (HGNs) so that their unique combination of properties can be utilised as nanotags more widely in Surface Enhanced Raman Spectroscopy (SERS) for biomedical applications.
Samantha Moreton, Karen Faulds and Duncan Graham of the University of Strathclyde, Glasgow, Neil Shand of the Defence Science and Technology Laboratory (DSTL) Porton Down, Salisbury, Wiltshire, UK and Matthew Bedics and Michael Detty of the University at Buffalo, The State University of New York, USA, suggest that HGNs with their thin gold shell and hollow interior are unique nanostructures. They exhibit surface plasmon resonance because the valence electrons will oscillate collectively if an electric field is applied. This phenomenon depends sensitively on the size and shape of the nanoparticles as well as their homogeneity and can be followed using extinction spectroscopy, the team reports in the Royal Society of Chemistry journal Nanoscale. Moreover, careful preparation of HGNs allows the SPR to be tuned to near-infrared wavelengths, viz. from 550 to 1320 nanometres.
Source:
spectroscopynow.com
Related News Press |
News and information
Researchers develop artificial building blocks of life March 8th, 2024
Imaging
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
The USTC realizes In situ electron paramagnetic resonance spectroscopy using single nanodiamond sensors November 3rd, 2023
Observation of left and right at nanoscale with optical force October 6th, 2023
Announcements
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Researchers develop artificial building blocks of life March 8th, 2024
Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024
Tools
Ferroelectrically modulate the Fermi level of graphene oxide to enhance SERS response November 3rd, 2023
The USTC realizes In situ electron paramagnetic resonance spectroscopy using single nanodiamond sensors November 3rd, 2023
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||