The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Ideal dimers comprising gold nanoparticles with a smooth surface and high sphericity are synthesized by a substrate‐based assembly strategy with efficient cetyltrimethylammonium bromide removal. An unprecedented structural and plasmonic uniformity at the single‐particle level is observed since inhomogeneities resulting from variations in gap morphology are eliminated. Single ideal dimers are analyzed...
In article number 1702754, Sebastian Schlücker and co‐workers synthesize ideal gold dimers of two spherical gold nanoparticles with a controlled gap distance and gap morphology. While theoreticians have been able to describe the properties of such a model system, experimentalists have failed to synthesize it. Here, elastic scattering of an ideal gold dimer using white light together with an electron...
Semiconductor‐based surface enhanced Raman scattering (SERS) has attracted great attention due to its excellent spectral reproducibility, high uniformity, and good anti‐interference ability. However, its relatively low SERS sensitivity still hinders its further developments in both performance and applications. Since the SERS is a peculiar surface effect, investigating the facet‐dependent SERS activity...
The capability to study the dynamic formation of plasmonic molecular junction is of fundamental importance, and it will provide new insights into molecular electronics/plasmonics, single‐entity electrochemistry, and nanooptoelectronics. Here, a facile method to form plasmonic molecular junctions is reported by utilizing single gold nanoparticle (NP) collision events at a highly curved gold nanoelectrode...
Isolating and in situ profiling the heterogeneous molecular phenotype of circulating tumor cells are of great significance for clinical cancer diagnosis and personalized therapy. Herein, an on‐chip strategy is proposed that combines size‐based microfluidic cell isolation with multiple spectrally orthogonal surface‐enhanced Raman spectroscopy (SERS) analysis for in situ profiling of cell membrane proteins...
For the first time, topological insulator bismuth selenide nanoparticles (Bi2Se3 NP) are core–shelled with gold (Au@Bi2Se3) i) to represent considerably small‐sized (11 nm) plasmonic nanoparticles, enabling accurate bioimaging in the near‐infrared region; ii) to substantially improve Bi2Se3 biocompatibility, iii) water dispersibility, and iv) surface functionalization capability through straightforward...
The enormous increase of Raman signal in the vicinity of metal nanoparticles allows surface‐enhanced Raman spectroscopy (SERS) to be employed for label‐free detection of substances at extremely low concentrations. However, the ultimate potential of label‐free SERS to identify pharmaceutical compounds at low concentrations, especially in relation to biofluid sensing, is far from being fully realized...
In article number 1802392, Lev T. Perelman and co‐workers report a quantitative label‐free surface‐enhanced Raman spectroscopy (SERS) method for identifying and quantifying drugs at ultralow concentrations. Self‐assembled gold nanoclusters entrap drug molecules and laser light excites the surface plasmon resonance, yielding a large SERS signal from the molecule trapped near the hot spot, allowing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.