TY - JOUR
T1 - SERS-from-scratch
T2 - An electric field-guided nanoparticle assembly method for cleanroom-free and low-cost preparation of surface-enhanced Raman scattering substrates
AU - Dies, Hannah
AU - Nosrati, Reza
AU - Raveendran, Joshua
AU - Escobedo, Carlos
AU - Docoslis, Aristides
PY - 2018/9/20
Y1 - 2018/9/20
N2 - Ultrasensitive detection of analytes is important in forensic science, environmental monitoring and medical diagnostics. Surface-enhanced Raman scattering (SERS) is an analytical detection method with single-molecule sensitivity, but nanofabrication of SERS substrates poses a barrier to its application. Here, we report on a facile and rapid approach to prepare ultrasensitive SERS substrates in situ by using electrokinetics to assemble Ag nanoparticles on a scored conductive surface. We demonstrate the unique characteristic of our method to produce highly SERS-active surfaces from a wide range of materials, including commercially available glass slides pre-coated with indium tin oxide (ITO). We show that the “SERS from scratch” substrates can detect trace quantities of explosives, drugs and pesticides, with sensitivities superior to some commercially available products.
AB - Ultrasensitive detection of analytes is important in forensic science, environmental monitoring and medical diagnostics. Surface-enhanced Raman scattering (SERS) is an analytical detection method with single-molecule sensitivity, but nanofabrication of SERS substrates poses a barrier to its application. Here, we report on a facile and rapid approach to prepare ultrasensitive SERS substrates in situ by using electrokinetics to assemble Ag nanoparticles on a scored conductive surface. We demonstrate the unique characteristic of our method to produce highly SERS-active surfaces from a wide range of materials, including commercially available glass slides pre-coated with indium tin oxide (ITO). We show that the “SERS from scratch” substrates can detect trace quantities of explosives, drugs and pesticides, with sensitivities superior to some commercially available products.
KW - Colloidal assembly
KW - Electrokinetics
KW - Nanoparticles
KW - Sensors
KW - Surface-enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=85047848511&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2018.05.073
DO - 10.1016/j.colsurfa.2018.05.073
M3 - Article
AN - SCOPUS:85047848511
SN - 0927-7757
VL - 553
SP - 695
EP - 702
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -