Results 261 to 270 of about 35,552 (310)

Luminescent thermometry for aerodynamic measurements

Review of Scientific Instruments, 1994
A luminescent temperature sensitive paint containing the molecule rhodamine B base in a silicone polymer paint has been developed that utilizes video imaging detection to produce temperature maps of an entire surface from luminescence intensity measurements.
Jean Gallery, Martin Gouterman, James Callis, Gamal Khalil, Blair McLachlan, James Bell   +5 more
openaire   +1 more source

Time-resolved measurements of luminescence

Journal of Luminescence, 2013
Abstract Luminescence sensing and imaging has become more widespread in recent years in a variety of industries including the biomedical and environmental fields. Measurements of luminescence lifetime hold inherent advantages over intensity-based response measurements, and advances in both technology and methods have enabled their use in a broader ...
Bradley B. Collier, Michael J. McShane
openaire   +1 more source

ISOTACHOPHORETIC MEASUREMENTS OF LUMINESCENT SEMICONDUCTOR NANOCRYSTALS

Biophysical Reviews and Letters, 2007
Luminescent semiconductor nanocrystals of CdTe and CdSe were derivatised by mercaptocarboxylic acids. A direct synthesis in the solution of the ligand and a post-synthesis ligand exchange method was used. The two methods were compared and evaluated by isotachophoresis.
Bücking, Wendelin, Ehlert, Oliver, Riegler, Jürgen, Rettenmeier, Christian, MERKOULOV, ALEXEI, Nann, Thomas   +5 more
openaire   +5 more sources

Frequency-Domain Measurement of Luminescent Lanthanide Chelates

The Journal of Physical Chemistry A, 2010
The sinusoidal modulation of excitation intensity and phase-sensitive detection of emission is ideally suitable for the accurate determination of the lifetime and intensity of lanthanide luminescence. In this work we elaborate on the general mathematical and instrumental techniques of the frequency-domain (FD) measurements in the low-frequency domain ...
Iko, Hyppänen, Tero, Soukka, Jouko, Kankare   +2 more
openaire   +2 more sources

Temperature lags of luminescence measurements in a commercial luminescence reader

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2015
Abstract The temperature recorded in thermoluminescence and optically stimulated luminescence equipments is not the temperature of the sample but that of the heating element on which the thermocouple is attached. Depending upon the rate of heating, a temperature difference appears between the samples and the heating element, termed as temperature lag,
Güneç Kıyak, Nafiye, Kitis, George, Polymeris, George S.   +2 more
openaire   +2 more sources

Reflection measurements for luminescent powders

Physica B: Condensed Matter, 2018
Abstract Luminescent materials are useful in applications varying from lighting and display technologies to document security features and medical research, amongst many others. Measurement of the excitation range is an important consideration, and absorption bands are often determined from a decrease in the measured diffuse reflectance of the ...
openaire   +1 more source

Full-field Strain Measurement using a Luminescent Coating

Experimental Mechanics, 2003
In this paper we describe an optical-based technique, called strain sensitive skin (S3), for measuring in-plane strain data on structural members under static load. The technique employs a coating consisting of a luminescent dye and polymer binder that is applied to the surface of a test part via conventional aerosol techniques.
James P. Hubner, Peter G. Ifju, Kirk S. Schanze, David A. Jenkins, Bruce F. Carroll, Yingsheng Wang, Phillip He, Anthony Brennan, Wissam El-Ratal   +8 more
openaire   +1 more source

Implantation temperature measurement using impurity luminescence

Radiation Effects, 1979
Abstract This letter reports variations on a technique for estimating the temperature of the irradiated region of an insulating material during ion implantation.
P. J. Chandler, P. D. Townsend
openaire   +1 more source

Measurement of Short Luminescence Decay Times

Applied Optics, 1967
The stroboscopic technique for measuring luminescence decay times and for time-resolved spectroscopy can be greatly simplified by using a photomultiplier which has a control mesh behind the photocathode. This makes it possible to cut off the tube output by applying a negative bias of 1-2 V to the mesh; then the tube can be gated on for short periods by
openaire   +2 more sources

Luminescence Decay Measurement via Temporal Speckles

Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP), 2019
We present a method able to reconstruct luminescence decay on the microsecond timescale from measurements based on a randomly fluctuating excitation intensity. The fluctuations are attained by rapidly changing speckle patterns, i.e. temporal speckles.
J. Junek, K. Žídek
openaire   +1 more source