Portable optical blood scattering sensor

Optical fiber humidity sensor based on evanescent-wave scattering.

The phenomenon of evanescent-wave scattering (EWS) is used to design an optical-fiber humidity sensor. Porous solgel silica (PSGS) coated on the surface of a silica optical-fiber core scatters evanescent waves that penetrate the coating layer. Water molecules in the gas phase surrounding the optical fiber can be absorbed into the inner surface of the pores of the porous silica. The absorbed wat...

Man-Portable Networked Sensor System

The Man-Portable Networked Sensor System (MPNSS), with its baseline sensor suite of a pan/tilt unit with video and FLIR cameras and laser rangefinder, functions in a distributed network of remote sensing packages and control stations designed to provide a rapidly deployable, extended-range surveillance capability for a wide variety of security operations and other tactical missions. While first...

Non-Invasive Blood Flow Measurement Using Optical Sensor

Blood flow is the volume of blood that passes through a particular point in the circulatory system. Measuring the blood flow is of prime importance because it not just plays a very crucial role in understanding the functionality of heart but also other organs. It is a reflection of the cardiac activity and greatly helps in monitoring the same. The proposed methodology of blood flow measurement ...

Continuous blood glucose monitoring with a thin-film optical sensor.

BACKGROUND We recently described a holographic optical sensor with improved selectivity for glucose over fructose that was based on a thin-film polymer hydrogel containing phenylboronic acid receptors. The aim of the present work was to measure glucose in human blood plasma as opposed to simple buffers and track changes in concentration at a rate mimicking glucose changes in vivo. METHODS We ...

Diver-Portable Multi-Sensor Buried Mine-Hunter