Porous Substrates for Label-Free Molecular Level Detection of Nonresonant Organic Molecules
ACS Nano2008Vol. 3(1), pp. 181–188
Citations Over TimeTop 10% of 2008 papers
Abstract
We report on the design of practical surface enhanced Raman scattering (SERS) substrate based upon 3D alumina membranes with cylindrical nanopores chemically modified with polyelectrolyte coating and loaded with gold nanoparticle clusters. These substrates allow for a molecular-level, label-free detection of common plastic explosive materials (TNT, DNT) down to 5-10 zeptograms or 15-30 molecules and a common liquid explosive (HMTD) down to 1 picogram. Such a sensitive detection of organic molecules by utilizing efficient SERS substrates opens the path for affordable and label-free detection of trace amount of practically important chemical compounds.
Related Papers
- → Sensors and Systems for the Detection of Explosive Devices - An Overview(2012)109 cited
- → TeraHertz Time-Domain Spectroscopy for Explosive Trace Detection(2006)13 cited
- → Detection of gold nanoparticles based on solid-state nanopore(2017)2 cited
- An Explosive Detection Method Based on NQR(2008)
- Theory and test on nuclear quadrupole resonance explosive detection(2006)