What is surface-enhanced Raman spectroscopy used for?
Abstract. Surface-enhanced Raman spectroscopy (SERS) is a vibrational spectroscopy technique with sensitivity down to the single molecule level that provides fine molecular fingerprints, allowing for direct identification of target analytes.
Who discovered surface-enhanced Raman spectroscopy SERS and when and what was the first experiment?
Surface-enhanced Raman scattering (SERS) was first observed in 1974 by Fleischmann et al. [1], who reported an unexpectedly large Raman signal from pyridine adsorbed on a roughened silver electrode.
What is SERS effect?
The SERS effect involves the interaction of the metal surface plasmons with the electronic and vibrational states of the adsorbed molecules, under the influence of the oscillating electromagnetic radiation [18].
What is SERS technique?
Surface-enhanced Raman spectroscopy (SERS) is a vibrational spectroscopy technique with sensitivity down to the single molecule level that provides fine molecular fingerprints, allowing for direct identification of target analytes.
What is SERS analysis?
Abstract. High Resolution Image. Surface-enhanced Raman scattering (SERS) is a powerful and sensitive technique for the detection of fingerprint signals of molecules and for the investigation of a series of surface chemical reactions.
What is the difference between Raman spectroscopy and surface-enhanced Raman spectroscopy?
The obvious advantage of SERS is the enhancement of the signal, which sometimes cannot even be measured by classical Raman spectroscopy because of the low concentration of the analyte. Hope this will help. SERS greatly enhances the normal Raman signal in the order of 6-8 and even it can go up to 14 orders of magnitude.
What is SERS detection?
Among various analytical techniques, surface-enhanced Raman scattering (SERS) is among the most promising methods in detecting trace amounts of molecules owing to its high molecular specificity (i.e., differentiation between different types of molecules) and high sensitivity (i.e., the lowest analyte concentration from …
What is the difference between Raman spectroscopy and surface enhanced Raman spectroscopy?
What is SERS application?
What is SERS? Raman Spectroscopy is a powerful technique that is used to identify a wide range of chemical and biological species. Applications range from detection of narcotics, chemical pollutants, analysis of food stuffs to the development of new pharmaceuticals.
Who discovered SERS?
Fleischmann
The discovery of SERS has a relatively short history. It was accidentally discovered by Fleischmann and co-workers in 1974 during measurements of the Raman scattering of pyridine on rough silver electrodes, (1) and they ascribed the enhancement to a surface-area effect.
What is a SERS substrate?
What is a SERS substrate? A Silmeco SERS substrate, called a SERStrate, is essentially a silicon wafer coated with a metal like gold or silver (or a custom metal of choice). The silicon wafer is made up of a special structure – ag/au coated nano-pillars – which facilitates molecular sensing (Raman scattering).
What is SERS project?
SERS is an urban redevelopment strategy, introduced by HDB in 1995 to renew older residential properties, and is basically HDB’s version of the en bloc process. If you are a resident staying in a block that’s lucky enough to be selected, you’ll be relocated to a new HDB flat with a new 99-year lease.
What is SERS sensor?
Surface-enhanced Raman scattering (SERS) is a highly sensitive technique for the detection of low-concentration molecules, including DNA, microRNA, proteins, blood, and bacteria; single-cell detection and identification; bioimaging; and disease diagnosis, providing abundant structural information for biological …
When was SERS implemented?
SERS is an urban redevelopment strategy, introduced by HDB in 1995 to renew older residential properties, and is basically HDB’s version of the en bloc process.
What is SERS compensation?
Under the Selective En bloc Redevelopment Scheme (SERS), we will compensate you a sum based on the market value of your flat at the point of the SERS announcement, and reasonable expenses to help you move. There shall be a minimum charge of $20.
How much is SERS compensation?
You will get a $30,000 SERS grant to help pay for your HDB replacement flat and other costs. These include conveyancing fees and stamp duties that must be paid when you buy a new flat.
Is SERS compulsory?
But SERS is implemented via compulsory acquisition. Owners cannot opt-out of the programme if their blocks or precincts were chosen by the Government.
What is SERS scheme?
The Selective En bloc Redevelopment Scheme, or SERS for short, is an urban redevelopment strategy employed by the Housing and Development Board in Singapore in maintaining and upgrading public housing flats in older estates in the city-state.