Fabrication of Flexible and Bendable Surface Enhanced Raman Scattering (SERS) substrate exhibiting constant performance at strained condition via AuNPs monolayer assembled on wrinkled PDMS
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초록
내용
Recently, lots of studies for fabrications of flexible/bendable Surface-enhanced Raman scattering (SERS) substrates have been researched, because of their outstanding applicability. However, there are trade off relation between enhancement factor (E.F.) and strain. (i.e. E.F. decreases as the SERS substrate is stretched) To overcome this problem, in this research, we proposed flexible SERS substrate that is fabricated by assembling gold nanoparticles (AuNPs) monolayer on the wrinkled structure of polydimethylsiloxane (PDMS). In addition, we deposited the MXene layer on presented SERS substrate to enhance the SERS effect, and established optimum thickness of MXene layer. To measure the E.F. of SERS substrate, the crystalviolet (C.V.) and rhodamine 6g (R6G) were used as analytes. Since a lot of molecules can be bound with MXene which is located on outside of presented SERS substrate due to its functional groups, it is anticipated to utilized at wide range of detecting field.