Erweiterte Suche der Leibniz Universität Hannover

Photothermal measurements on optical thin films verfasst von Eberhard Welsch, Detlev Ristau Abstract An overview of the application of the photothermal technique for optical as well as thermophysical characterizations of thin films is given.

Key signal contributions in photothermal deflection spectroscopy verfasst von Walter Dickmann, Johannes Dickmann, Florian Feilong Bruns, Stefanie Kroker Abstract We report on key signal contributions in photothermal deflection spectroscopy PDS of semiconductors at photon energies below the bandgap energy and show how to extract the actual absorption properties from the measurement data.

Photothermal gold nanoparticle mediated stimulation of cardiomyocyte beating verfasst von Stefan Kalies, Lara Gentemann, Michelle Coffee, Robert Zweigerdt, Dag Heinemann, Alexander Heisterkamp Organisationseinheit en Institut für Quantenoptik Abteilung Phytophotonik Typ Monografie Band 10094 Publikationsdatum 2017 Publikationsstatus Veröffentlicht Peer reviewed Ja Elektronische Version en https://doi.org/10.1117/12.2249834 Zugang: Ges...

Pulsed photothermal deflection with a top hat beam excitation verfasst von Bincheng Li, Holger Blaschke, Detlev Ristau Abstract A top hat beam excitation is used in pulsed photothermal deflection PTD experiments.

Combined laser calorimetry and photothermal technique for absorption measurement of optical coatings verfasst von Bincheng Li, Holger Blaschke, Detlev Ristau Abstract To the best of our knowledge, a combined sensitive technique employing both laser calorimetry and a surface thermal lens scheme for measuring absorption values of optical coatings is presented for the first time.

Facile synthesis of a croconaine based nanoformulation for optoacoustic imaging and photothermal therapy verfasst von Nian Liu, Patrick O Connor, Vipul Gujrati, Dimitris Gorpas, Sarah Glasl, Andreas Blutke, Axel Walch, Karin Kleigrewe, Michael Sattler, Oliver Plettenburg, Vasilis Ntziachristos Abstract CR760, a croconaine dye with excellent optical properties, was synthesized in a single step and subsequently nano formulated for optoa...

Facile Synthesis of a Croconaine Based Nanoformulation for Optoacoustic Imaging and Photothermal Therapy verfasst von Nian Liu, Patrick O Connor, Vipul Gujrati, Dimitris Gorpas, Sarah Glasl, Andreas Blutke, Axel Walch, Karin Kleigrewe, Michael Sattler, Oliver Plettenburg, Vasilis Ntziachristos Abstract Near infrared NIR light absorbing theranostic agents can integrate optoacoustic imaging and photothermal therapy for effectiv...

Facile synthesis of a croconaine based nanoformulation for optoacoustic imaging and photothermal therapy verfasst von Nian Liu, Patrick O Connor, Vipul Gujrati, Dimitris Gorpas, Sarah Glasl, Andreas Blutke, Axel Walch, Karin Kleigrewe, Michael Sattler, Oliver Plettenburg, Vasilis Ntziachristos Abstract CR760, a croconaine dye with excellent optical properties, was synthesized in a single step and subsequently nano formulated for optoa...

Potentiality of the photothermal surface displacement technique for precisely performed absorption measurement of optical coatings verfasst von Peter Zimmermann, Detlev Ristau, Eberhard Welsch Abstract The influence of sample properties on the measured signal has to be investigated, so that measurements of the optical absorption in thin film coatings by means of the photothermal surface displacement technique may be precisely...

IR Mikroskop mIRage Hersteller: Photothermal Spectroscopy Corp Kurzbeschreibung: Das mIRage IR Mikroskop verwendet eine patentierte Technologie, welche auf der optischen photothermischen IR Spektroskopie O PTIR basiert und dadurch eine IR Bildgebung im Submikronbereich ermöglicht Anwendung: Untersuchung der Ursachen von Produktfehlern inkl.

Such properties bring to life a number of nontrivial effects, including enhanced photoabsorption and photothermal conversion. As an illustration, we demonstrate that the NPs exhibit a very strong photothermal response, much exceeding that of conventional dielectric nanoresonators based on Si. Being in a mobile colloidal state and exhibiting superior optical properties compared to other dielectric resonant structures, the synt...

A wavelength tunable laser calorimeter LCA is used to detect dopants and other impurities in optical material. Also, a technique for photothermal absorption measurements is combined with the LCA set up allowing for a lateral scan of the sample retaining an absolute calibration.

Absorption and Scattering Behavior of Nanofluids in the Visible Range verfasst von Jan Rudolf Eggers, Stephan Kabelac Abstract The use of plasmonic nanofluids in photothermal applications, such as solar thermal receivers, is a strong subject in current research. Additionally, other fields show interests in basefluids, of which the optical properties are tuned by adding nanoparticles.

Modulation of cardiomyocyte activity using pulsed laser irradiated gold nanoparticles verfasst von Lara Gentemann, Stefan Kalies, Michelle Coffee, Heiko Meyer, Tammo Ripken, Alexander Heisterkamp, Robert Zweigerdt, Dag Heinemann Abstract Can photothermal gold nanoparticle mediated laser manipulation be applied to induce cardiac contraction? Based on our previous work, we present a novel concept of cell stimulation.

For measuring the reflection losses of the coated fiber surfaces, a diode pumped Nd:YAG laser was used. Absorption measurements were performed by photothermal displacement spectroscopy, a surface sensitive technique which makes scanning of the fiber surface possible. These data were compared to calorimetric values determined from quartz substrates which were deposited in the same coating run.