Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Christian Leppin"'
Publikováno v:
Results in Physics, Vol 45, Iss , Pp 106219- (2023)
Fouling at a hot reactor wall during emulsion polymerization was studied in-situ with a quartz crystal microbalance with dissipation monitoring (QCM-D). Transient maxima in resonance bandwidth were observed, which are typically interpreted as the sig
Externí odkaz:
https://doaj.org/article/9624402dc58142f08bd67e6b67a406a0
Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model
Publikováno v:
Sensors, Vol 23, Iss 3, p 1348 (2023)
Quartz crystal microbalance with dissipation monitoring (QCM-D) is a well-established technique for studying soft films. It can provide gravimetric as well as nongravimetric information about a film, such as its thickness and mechanical properties. T
Externí odkaz:
https://doaj.org/article/df1a1392c4214e3e9ad005d1a75f2f5a
Publikováno v:
Sensors, Vol 21, Iss 10, p 3490 (2021)
The response of the quartz crystal microbalance (QCM, also: QCM-D for “QCM with Dissipation monitoring”) to loading with a diverse set of samples is reviewed in a consistent frame. After a brief introduction to the advanced QCMs, the governing eq
Externí odkaz:
https://doaj.org/article/318ee016141f498b8e72c9344a3b6732
Autor:
Eberhard Grambow, Christian Leppin, Katja Leppin, Günther Kundt, Ernst Klar, Marcus Frank, Brigitte Vollmar
Publikováno v:
Platelets, Vol 28, Iss 5, Pp 509-517 (2017)
The volatile transmitter hydrogen sulfide (H2S) is known for its various functions in vascular biology. This study evaluates the effect of the H2S-donor GYY4137 (GYY) on thrombus stability and microvascular thrombolysis. Human whole blood served for
Externí odkaz:
https://doaj.org/article/94ea696aed8a4f71b8431f0f9a620cb2
Autor:
Christian Leppin, Sven Hampel, Frederick Sebastian Meyer, Arne Langhoff, Ursula Elisabeth Adriane Fittschen, Diethelm Johannsmann
Publikováno v:
Sensors, Vol 20, Iss 20, p 5915 (2020)
A quartz crystal microbalance (QCM) is described, which simultaneously determines resonance frequency and bandwidth on four different overtones. The time resolution is 10 milliseconds. This fast, multi-overtone QCM is based on multi-frequency lockin
Externí odkaz:
https://doaj.org/article/7cb2a5b7f3264b47b10bb7da1cad30a5
Publikováno v:
The Analyst. 148:1887-1897
A QCM-D probes the temperature- and concentration-dependent complex high-frequency viscosity and provides information on protein-protein interactions in solutions of monoclonal antibodies.
Publikováno v:
Analytical Chemistry. 94:10227-10233
Square-wave voltammetry on electrolytes containing reversible redox pairs in solution was complemented by acoustic microgravimetry, where multifrequency lock-in amplification provides for a time resolution of 2.5 ms and a frequency resolution after a
Publikováno v:
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering ISBN: 9780124095472
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6e7a8a226b9a36a6f103b85a3b1888e
https://doi.org/10.1016/b978-0-323-85669-0.00114-8
https://doi.org/10.1016/b978-0-323-85669-0.00114-8
Autor:
Alexander Simon Gödde, Arne Langhoff, Diethelm Johannsmann, Hanna-Friederike Poggemann, Christian Leppin
Publikováno v:
The Analyst. 146:6005-6013
Using a fast electrochemical quartz crystal microbalance (EQCM), zwitterionic electrolytes were studied with regard to changes of resonance frequency and resonance bandwidth after the electrode potential was switched. In addition to a fast change of
Autor:
Frederick Sebastian Meyer, Arne Langhoff, Christian Leppin, Diethelm Johannsmann, Astrid Peschel
Publikováno v:
The Analyst. 146:2160-2171
Changes in the viscoelasticity of the electric double layer following steps in electrode potential were studied with an electrochemical quartz crystal microbalance (EQCM). The overtone scaling was the same as in gravimetry (−Δf/n ≈ const with Δ