sers – TechConnect Briefs

SERS Detection of DNA-Bound Methylthioninium Chloride on Gold Coated Substrates.

Shattique M.R., Stepanova M., Missouri State University, US

Nano-biological systems interfacing solid nano-structured solid surfaces with biological compounds such as oligonucleotides or proteins are highly regarded as enabling materials for biosensing and biocatalysis applications. In particular nanostructures of noble metals such as gold [...]

Meat Spoilage Sensing Devices

Bosnick K., Tay L.L., Bruce J., Smith B., Zhang H., Shwartz C., National Research Council Canada, CA

The safety, sustainability, and profitability of the food industry will remain a key societal challenge in the decades ahead. For example, the value of food waste in Canada is currently over $31 billion annually (or [...]

Integrated Surface-Enhanced Raman Spectroscopy Sensors for Process Monitoring

Zhang K., Zhang X., Rabin O., Zhang K., Zhang X., Briber R.M., von Bredow H., Metting C., Atanasoff G., University of Maryland, US

Optical metamaterials obtain their unique properties from the combination of nanoscale plasmonic components and dielectric components. Reproducible mass-production of metamaterials is challenging but desirable for applications such as surface-enhanced Raman scattering (SERS) for chemical sensing. [...]

Plasmonic Nanopillar Structures for Surface-Enhanced Raman Scattering Applications

Rindzevicius T., Schmidt M.S., Wu K., Thilsted A.H., Lauridsen R.K., Alstrøm T.S., Palla M., Yang J., Boisen A., Technical University of Denmark, DK

Nanosized noble metal structures support localized surface plasmon (LSPR) resonances that depend on their dimensions, shapes and compositions. Particle LSPR’s can be used to spatially confine the incident light and produce enormous electromagnetic field enhancement [...]

Two-step approach for the nanofabrication of highly ordered ultra-long porous gold nanowires with an adjustable porosity for SERS-based sensors

Chauvin A., Delacôte C., Molina-Luna L., Boujtita M., Thiry D., Du K., Ding J., Choi C-H, Humbert B., Mevellec J.-Y., Tessier P.-Y., El Mel A.-A., Institut des matériaux Jean Rouxel, FR

Recently, nanoporous gold has been pointed out as a promising candidate for the development of SERS-based sensors for the detection of environmental toxins and small molecules [1]. One way to improve the detection ability of [...]

Cellulose Fiber Immobilized Silver Nanoparticles and Their Applications in Catalysis, SERS and Antimicrobial Activity

Baruah B., Kennesaw State University, US

This work involves in-situ preparation of silver nanoparticles on nonwoven fibers in baby wipes (a mixture of synthetic fiber and cellulose fiber) by impregnating Ag+ ions. The Ag+ ions in the micronanopores of the fibers [...]

Detection and degradation of environmental pollutants based on Fe3O4@Au nanoparticles as surface enhanced Raman scattering (SERS) substrates

Du J., Jing C., Chinese Academy of Sciences, CN

Ever since the surface-enhanced Raman scattering (SERS) effect was discovered, it has played a significant role in the field of vibrational spectroscopy and is now finding increasing use in high-profile applications. Recently, many catalytic-active SERS [...]

Layer by layer polyelectrolyte encapsulation of satellite structured Fe3O4@SiO2-Au magnetic SERS probe for selective detection of food dyes

Sun Z., Jing C., Chinese Academy of Sciences, CN

In situ detection and identification of dyes from a complex chemical mixture presents a great challenge to analytical chemists. Au NPs were uniformly deposited on magnetic Fe3O4@SiO2 bead to form a core-satellite Fe3O4@SiO2-AuNPs (FSPA) hetero-nanostructure, [...]

Annealing effect on composition and functional properties of hybrid C-Au-Ag nanoparticles

Manshina A., Povolotskiy A., Povolotskaya A., Koshevoy I., Tunik S., St. Petersburg State University, RU

Here we present an approach to the synthesis of hybrid C-Au-Ag nanoparticles which were found to be 20–30 nm carbon nanospheres containing dispersed Au-Ag bimetallic nanoparticles (1–5 nm). It was found also that C-Au-Ag NPs [...]

Multifunctional plasmonic nanoparticles for biomedical applications

Sotiriou G.A., Pratsinis S.E., ETH Zürich, CH

Plasmonic nanoparticles play an important role in biomedical applications today as they can serve as superior optically-stable bioimaging agents, be employed in biosensor devices for the early diagnosis of diseases, and exhibit promising results for [...]