optical sensor – TechConnect Briefs

Microsphere Resonators for Biodetection

Echeveria L., Gilmore S., Demory B., Tolfa C., Harrison S., Chavez G., Chang A., Singh P., Bond T., Lawrence Livermore National Laboratory, US

Whispering Gallery Mode microresonators are suitable for biosensing applications as they exhibit large Quality factors (Q) capable of sensing single nanoparticles, while also showcasing a dramatically reduced footprint compared to standard optical sensing techniques. The [...]

Plasmonic nanodome array fabricated on plastic as a dual-mode surface plasmon resonance and surface-enhanced Raman scattering sensor

Choi C-J, Semancik S., National Institute of Standards and Technology, US

Label-free optical sensors have recently emerged as a highly sensitive approach for detecting a broad range of chemical and biological analytes that include illicit drug compounds, explosives, proteins, viruses, and bacteria.To best meet such diverse [...]

Design and characteristics of an optical nanosensor based on immobilization of MWCNTs-g-PCA-Au on a triacetylcellulose membrane for determination trace amounts of thiourea

Sarlak N., Sameri Z., Meyer T.J., Shaabani K., Pourrahim R., University of North Carolina at Chapel Hill, US

The characterization of an optical absorption based one-shot sensor is described for the determination of thiourea based on the immobilization of new nanocomposite of MWCNT-graft-poly(citric acid)/Au on a triacetylcellulose membrane. So Multiwalled carbon nanotubes were [...]

Detection of Clinical Biomarkers using a novel parabolic microchip diagnostic platform

Hill D., Hearty S., Basabe-Desmonts L., Blue R., McAtamney C., O’Kennedy R., MacCraith B., Dublin City University, IE

A polymer paraboloid microchip is utilised for performing fluorescence detection in point-of-care devices, employing a mass producible and effective strategy. The chip consists of a single piece of moulded plastic containing nine parabolic elements, with [...]

Improvement of dynamic features of an adaptive optical system for detection and correction of ophthalmic distortions

de Lima Monteiro D.W., Furtado A.S.O., Soloviev O., Ferreira Jr A.I., Teixeira F.B., Melo J.G.M., Vdovin G., Universidade Federal de Minas Gerais, BR

Precise real-time observation of retinal features, ophthalmic biometric identification and the prescription of aberration-specific contact lenses demand detection and eventual correction of ophthalmic aberrations at rates higher than those of microfluctuations and involuntary movements inherent [...]

Development of Nanoprobes as Glucose Biosensors

Dweik M., Grant S., University of Missouri-Columbia, US

In 2005, the American Diabetes Association (ADA) reported that 20.8 million people have diabetes, making it the fifth leading cause of death by disease in the USA. The objective is to focus on the development [...]