【研究成果】2011
研究成果36
Single molecule detection from a large-scale SERS-active Au79Ag21 substrate
Hongwen Liu, Ling Zhang, Xingyou Lang, Yoshinori Yamaguchi, Hiroshi Iwasaki, Yasushi Inouye, Qikun Xue & Mingwei Chen
Single molecule detection from a large-scale SERS-active Au79Ag21 substrate
Typical Raman map of adenine (10−9 M) (left), corresponding optical microscopic image (middle), and their overlay image (right).
We report a large-scale, free standing and chemically stable SERS substrate for both resonant and nonresonant single molecule detection. Our robust substrate is made from wrinkled nanoporousAu79Ag21 films that contain a high number of electromagnetic "hot spots" with a local SERS enhancement larger than 109.
