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Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

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Dielectric spectroscopy of microemulsions

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1997
The dielectric spectroscopy method (DS) has become a useful technique for the investigation of the structural and dynamic features of the components of both microemulsions and microdroplets over a wide temperature and frequency range. The dielectric parameters obtained by DS determine the geometry of the association structures as well as the overall ...
Yuri Feldman, NicK Kozlovich, Nissim Garti   +2 more
exaly   +2 more sources

Hematocrit measurement by dielectric spectroscopy

Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, 2002
Based on permittivity changes, a new method to measure hematocrit (HCT) in extracorporeal blood systems is presented. Human blood samples were tested at different HCT levels pairing the values of permittivity change, obtained by means of a commercial impedance analyzer, with traditional centrifugation measurements.
Ernesto F. Treo, Carmelo J. Felice, Mónica Cecilia Tirado, Max E. Valentinuzzi, Daniel O. Cervantes   +4 more
openaire   +2 more sources

Dielectric relaxation time spectroscopy

IEEE Transactions on Biomedical Engineering, 2000
A new mathematical method is developed to recover the permittivity relaxation spectrum of living tissue from measurements of the real and imaginary parts of the impedance. Aiming to derive information about electrical properties of living tissue without the prior selection of any impedance model, the procedure calculates the relaxation time ...
Kevin Paulson, Svetlana Jouravleva, Chris N. McLeod   +2 more
openaire   +2 more sources

Broadband local dielectric spectroscopy

Applied Physics Letters, 2016
A route to extend the measurement bandwidth of local dielectric spectroscopy up to the MHz range has been devised. The method is based on a slow amplitude modulation at a frequency Ω of the excitation field oscillating at a frequency ω and the coherent detection of the modulated average electric force or force gradient at Ω.
M Labardi, M Lucchesi, D Prevosto, S Capaccioli   +3 more
openaire   +1 more source

Dielectric spectroscopy of nanocomposites

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika), 2018
The influence of 1 wt. % nanoparticles (ZnO, TiO 2 , SiO 2 ) as fillers in an epoxy resin, known as nanocomposites, on the complex permittivity have been measured. The real and imaginary parts of the complex permittivity and dissipation factor within the frequency ranges from 1 mHz to 1 MHz were measured by a capacitance method.
Kudelcik Jozef, Emil Jahoda, Miroslav Gutten, Jaroslav Hornak, Pavel Trnka   +4 more
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Dielectric spectroscopy of polymers

Endeavour, 1977
Peter Hedvig Bristol: Adam Hilger 1977 pp 430 price £1750 (cased) (25% reduction for Institute of Physics members) This is a useful reference volume for anyone working in the area indicated by its title. This is indeed a large area, and the book includes not only information concerning the dielectrics spectra of particular polymers, but also includes ...
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Agricultural Applications of Dielectric Spectroscopy

Journal of Microwave Power and Electromagnetic Energy, 2003
A brief account of interest in dielectric properties of agricultural materials is presented, and some examples of dielectric spectroscopy applied to agricultural problems are discussed. Included are wide frequency range (250 Hz to 12 GHz) permittivity, or dielectric properties, measurements on adult rice weevils and hard red winter wheat, for the ...
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Dielectric spectroscopy in agriculture

Journal of Non-Crystalline Solids, 2005
Abstract Reported measurements of the dielectric properties or permittivities over broad frequency ranges for some agricultural materials are cited, and graphical data from the cited literature are presented. They include 50-kHz to 12-GHz frequency-domain permittivity data for adult rice weevils and hard red winter wheat, time-domain reflectometry ...
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Dielectric Relaxation Spectroscopy

2003
Nowadays dielectric spectroscopy covers the frequency range from 10−6 Hz to 1010 Hz by using computer controlled impedance analyzers [1–10], network analyzers as well as time domain spectrometers [11,12]. At higher frequencies (above 10 GHz) one should use wave-guides, which means that for each frequency a separate apparatus is necessary to perform ...
S. Wróbel, B. Gestblom, J. Jadżyn, P. Kȩdziora, L. Hellemans, A. Würflinger, S. Urban   +6 more
openaire   +1 more source