Macroscopic Ag nanostructure array patterns with high-density hotspots for reliable and ultra-sensitive SERS substrates
作者机构:Department of Nano Manufacturing TechnologyKorea Institute of Machinery and Materials(KIMM)156 Gajeongbuk-RoYuseong-GuDaejeon 34103Republic of Korea
出 版 物:《Nano Research》 (纳米研究(英文版))
年 卷 期:2019年第12卷第10期
页 面:2554-2558页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金:supported by the BioNano Health-Guard Research Center funded by the Ministry of Science and ICT & Future Planning (MSIP) of Korea as Global Frontier Project the Nano-Material Technology Development Program of the National Research Foundation (NRF) funded by the Ministry of Science and ICT
主 题:nanoImprint lithography surface-enhanced Raman scattering(SERS)spectroscopy electrodeposition nano patterning gold silver
摘 要:Syn thesis of metal nano structures arrays with large amounts of small nano-gaps on a homoge nous macroscale is of significant in terest and importa nee in chemistry,biotech no logy,physics,and nan otech no logy because of their enhan ced ***,the fabricatio n of uncovered nano-gaps with high-density and uniformity is rather difficult due to the complex and multiple synthetic *** this research,a facile and low-cost approach is demonstraind for the synthesis of high-density small nano-gaps(about 3.4 nm)between silver nanostructure array patter ns(SNAPs)over a large *** nan o?hole patter ns were periodically gen erated over an entire substrate using nano-impri nt *** reacti on at the high over-potential produced multiple silver nano crystals inside the nano-hole patter ns,gen erati ng a high-de nsity of small and un covered ***,we fully dem on strate their applicati on in the rapid detectio n of rhodamine 6G(R6G)molecules by surface-enhaneed Raman scattering(SERS)spectroscopy with a very low detection limit(1 fM)as well as excellent signal uniformity(RSD8.0%±2.5%),i ndicati ng an extra ordinary capability for single-molecule detecti on.