Tip-enhanced Raman detection of antibody conjugated nanoparticles on cellular membranes.
Tip-enhanced Raman detection of antibody conjugated nanoparticles on cellular membranes.
复制标题
DOI:
10.1021/ac301739k
复制
发表时间:
2012-09-04
影响因子:
7.4
通讯作者:
Schultz, Zachary D.
中科院分区:
文献类型:
--
作者:
Alexander, Kristen D.;Schultz, Zachary D.
Tip enhanced Raman scattering (TERS) microscopy is used to image antibody conjugated nanoparticles on intact cellular membranes. The combination of plasmonic coupling and the resultant electric field obtained from intermediate focusing of a radially polarized source gives rise to Raman images with spatial resolution below 50 nm. Finite element method calculations are used to explain the origins of the observed image resolution and spectroscopic signals. The observed Raman scattering provides information about the biomolecules present near the nanoparticle probes. The results show that aggregates of nanoparticles produce spectroscopic results similar to those reported from other surface enhanced Raman spectroscopies [e.g. – shell isolated nanoparticle enhanced Raman spectroscopy (SHINERS) and aggregated nanoparticles]; however, TERS enables the detection of isolated nanoparticles on cell membranes where the observed spectra provide information about the interaction of the specific biomolecule conjugated to the nanoparticle probe. These measurements present a new technique for exploring biomolecular interactions on the surface of cells and tissue.
登录
查看更多内容
影响因子:
4.4
作者:
Hao, E;Schatz, GC
通讯作者:
Schatz, GC
影响因子:
3.7
作者:
Lee, Seung Joon;Guan, Zhiqiang;Moskovits, Martin
通讯作者:
Moskovits, Martin
影响因子:
2.5
作者:
Boehme, R.;Richter, M.;Popp, J.
通讯作者:
Popp, J.
影响因子:
2.5
作者:
Hayazawa, Norihiko;Motohashi, Masashi;Kawata, Satoshi
通讯作者:
Kawata, Satoshi
影响因子:
3.8
作者:
Chen, Weibin;Zhan, Qiwen
通讯作者:
Zhan, Qiwen