Recent developments in portable and handheld opto-chemical analytical instrumentation
over the last decade (2000–2010) are reviewed. First, the characteristics of typical …

This review highlights methods for the detection of the main mycotoxins: aflatoxins,
fumonisins, ochratoxin, patulin, trichothecene, zearalenone, citrinin. Detection methods such …

In this work, several aspects of in vivo glucose detection using a nanotube-based optical
sensor are considered. The optical properties of commonly used organic and nanoparticle …

Chlorophyll a fluorometry has long been used as a method to study phytoplankton in the
ocean. In situ fluorometry is used frequently in oceanography to provide depth-resolved …

Sensor networks have been identified as being useful in a variety of domains to include the
battlefield and perimeter defense. We motivate the security problems that sensor networks …

Given the limited access to healthcare resources, low-income settings require the
development of affordable technology. Here we present the design and evaluation of a low …

This work describes the design, building, and testing of miniature, low-cost LED–LDR
colorimeters for absorption-spectrophotometry experiments. It also describes using these …

The design, development and performance evaluation of a fluorescence-based pH sensor
for on-line measurements is presented. The pKa of the sensing element has been calculated …

This article reviews current efforts to make glucose sensors based on the inherent optical
properties of single walled carbon nanotubes. The advantages of single walled carbon …

A low cost LED based spectrometer is described. This LED based spectrometer could be
operated as a standalone instrument or under PC control via serial link. A total of seven …