Hand-held synchronous scan spectrometer forin situand immediate detection of live/dead bacteria ratio

2017 ◽  
Vol 88 (11) ◽  
pp. 114301 ◽  
Author(s):  
Runze Li ◽  
Umang Goswami ◽  
Matthew Walck ◽  
Kasfia Khan ◽  
Jie Chen ◽  
...  
Keyword(s):  
Synchronous Scan

Synchronous-scan fluorescence spectra of Chlorella vulgaris solution

Chemosphere ◽  
2005 ◽  
Vol 60 (11) ◽  
pp. 1550-1554 ◽  
Author(s):  
Xianli Liu ◽  
Shu Tao ◽  
Nansheng Deng
Keyword(s):  
Chlorella Vulgaris ◽  
Fluorescence Spectra ◽  
Synchronous Scan

Spontaneous assembly and synchronous scan spectra of gold nanoparticle monolayer Janus film with thiol-terminated polystyrene

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57611-57614 ◽  
Author(s):  
Yunbo Li ◽  
Linlin Song ◽  
Yisha Qiao
Keyword(s):  
Metal Nanoparticles ◽  
Gold Nanoparticle ◽  
Light Source ◽  
Source Spectrum ◽  
Synchronous Scan ◽  
Nanoparticle Film

This communication presents a facile method for preparing ordered hydrophilic metal nanoparticles into gold nanoparticle monolayer Janus film. It also reveals the enhanced light source spectrum properties of the gold nanoparticle film.

Time-Resolved Luminescence Spectroscopy: Computer Interfacing and Software Development for a Boxcar-Based Laser-Luminescence Spectrometer

1993 ◽  
Vol 47 (12) ◽  
pp. 2044-2051 ◽  
Author(s):  
João B. Marques Novo ◽  
Francisco B. T. Pessine
Keyword(s):  
Luminescence Decay ◽  
Luminescence Spectroscopy ◽  
Gate Delay ◽  
Excited State Lifetime ◽  
Time Resolved ◽  
Mathematical Calculation ◽  
Moving Averaging ◽  
Boxcar Integrator ◽  
Spectral Luminescence ◽  
Synchronous Scan

The undesirable resistance-capacitance (RC) distortion coming from the exponential moving averaging process of a boxcar integrator/averager acquisition system in kinetic and spectral luminescence measurements could be effectively eliminated by interfacing it to a microcomputer. Accurate acquisition of luminescence decay curves and time-resolved spectra was provided by a developed software that allows synchronous scan control of the gate delay time in the boxcar integrator with the emission wavelength in the monochromator. Some simple mathematical calculation routines, including excited-state lifetime extraction from luminescence decay curves and normalization of time-resolved spectra, were added. The main characteristics of both the software and the interfacing hardware are reported.

Synchronous scan-projection lithography on overall circumference of fine pipes with a diameter of 2 mm

2016 ◽  
Vol 55 (6S1) ◽  
pp. 06GP13 ◽  
Author(s):  
Toshiyuki Horiuchi ◽  
Takahiro Furuhata ◽  
Hideyuki Muro
Keyword(s):  
Projection Lithography ◽  
Synchronous Scan

DEVELOPMENT OF AN OIL-IN-WATER CONTENT MONITOR

1977 ◽  
Vol 1977 (1) ◽  
pp. 147-152 ◽  
Author(s):  
A. W. Hornig ◽  
J. T. Brownrigg ◽  
B. R. Chisholm ◽  
L. P. Giering ◽  
R. L. Skewes
Keyword(s):  
Water Content ◽  
High Sensitivity ◽  
Fast Response ◽  
Coast Guard ◽  
Optical Scheme ◽  
Simultaneous Excitation ◽  
Oil In Water ◽  
Synchronous Scan ◽  
Oil Type ◽  
Design Construction

ABSTRACT For several years Baird-Atomic has been involved in the design, construction and testing of a breadboard oil-in-water content monitor for use with bilge and ballast wastewater. This work has been supported by the Coast Guard, the Navy, and Baird-Atomic. The basis of the monitor is the luminescence (fluorescence) of the aromatics present in all petroleum oils. The advantages of this approach include high sensitivity, real time output, fast response time, insensitivity to many interferences, and reduced sensitivity to particulates. The chief problem is the unequal luminescence response of oils. The general approach involves simultaneous excitation and monitoring at a number of wavelengths, selected to give a net response almost independent of oil type. A first approach involved a novel optical scheme involving two polychromators. The first provided excitation at different wave-lengths along a flowing sample. The second, operated in reverse, summed selected emission from different portions of the sample. This approach, called “synchronous scan,” while successful, was supplanted by a more general approach which utilized the total luminescence of the sample: i.e., all possible emissions resulting from all possible excitation. In this case, the second polychromator was used to disperse emission from the sample at right angles to the excitation dispersion. The total luminescence was then imaged at the exit plane of the second monochromator where a computer-designed mask selected those spectral regions equalizing response of various oil types. Results of tests are discussed, together with progress on a shipboard prototype.

P 213 Synchronous scan spectrometry methods — A contribution to multi-component analysis

1995 ◽  
Vol 35 ◽  
pp. S195
Author(s):  
JoséP.P. Domingues ◽  
JoséB.P.S. Simöes ◽  
Carlos M.B.A. Correia ◽  
Hugh D. Burrows
Keyword(s):  
Component Analysis ◽  
Synchronous Scan
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