We investigate fabrication of a higher-order nanostructure consisting of Au nanoparticles using convective self-assembly in a Lab-chemical chip to serve a wide range of applications in life science, medical diagnosis, environmental analysis, and food safety. Our higher-order nanostructure devices enable highly sensitive detection of various molecules by an easy operation of in situ surface enhanced Raman scattering platform using a simple Raman spectrometer.
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