Study on laser-induced breakdown spectroscopy in high-pressure helium gas environment for deep ocean applications

Novel SERS Probe Based on Ag Nanobean/Cu Foam for Deep-Sea Extreme Environment Biomolecule Detection

“…10−14 However, the high pressure, high salt, and complex fluid environment in the deep sea posed a serious challenge to the application of SERS technology in the deep sea. 15,16 Solid SERS substrate is the first choice for deep sea in situ detection because of its strong stability and pressure resistance. 8,17 The SERS substrates were successfully applied to cold seep vents in our previous work.…”

“…The metabolic molecules associated with symbiotic bacteria living in deep-sea cold seeps are of high research value. − Benefiting from the development of deep-sea in situ detection technology, various spectral instruments have been successfully applied to the detection of deep-sea methane, carbonate, carbon dioxide and other molecules. − However, due to the low concentration of organic molecules in the deep-sea environment, the traditional detection technology is difficult to achieve the in situ detection of deep-sea organic molecules. , Surface-enhanced Raman scattering (SERS) technology became an effective means to solve this problem due to its advantages of high sensitivity, no need for sample pretreatment and fast real-time detection. − However, the high pressure, high salt, and complex fluid environment in the deep sea posed a serious challenge to the application of SERS technology in the deep sea. , Solid SERS substrate is the first choice for deep sea in situ detection because of its strong stability and pressure resistance. , The SERS substrates were successfully applied to cold seep vents in our previous work . Although Raman spectral information on various biological macromolecules was obtained, the defects of traditional solid SERS substrates applied in deep sea were also exposed.…”