Spectrographic TraceAnalysisofAir-borne Particulates

Spectrographic Microfluidic Memory

Recent advancements in microand nanoscale fluidic manipulation have enabled the development of a new class of tunable optical structures which are collectively referred to as optofluidic devices. In this paper we will introduce our recent work directed towards the development of a spectrographic optofluidic memory. Data encoding for the memory is based on creating spectrographic codes consistin...

Atmospheric monitoring with a spectrographic imager

A compact airborne spectrographic imager (CASI) mounted on top of an attitude stabilizing platform inside a Cessna 207T was used to monitor changes in and around a lake near Berlin for 4 months in 1993± 1994. The radiance was recorded at three di€ erent altitudes in the wavelength range 0 4́± 0 9́ mm. The observed radiances were found to be di€ erent from 1 month to another due to the variability...

Technologies for Measuring Particulates

A Dsp Board Based Spectrographic Analyzer

A spectrogram is a visual representation of temporal variations in spectral magnitudes at various frequencies of a dynamic signal. The digital spectrographic analysis involves short-time Fourier analysis of the acquired signal, conversion of the spectral magnitudes to dB scale and display of these magnitudes as gray level shades as a function of time and frequency along x and y axes, respective...

Spectrographic determination of lead in blood.