Search Results - "Kummrow, A"

Quantitative assessment of cell viability based on flow cytometry and microscopy by Kummrow, A, Frankowski, M, Bock, N, Werner, C, Dziekan, T, Neukammer, J

“…We compare flow cytometric and microscopic determination of cell viability by fluorescence labeling using calcein acetoxy‐methyl‐ester and ethidium homodimer‐1…”
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Microfluidic structures for flow cytometric analysis of hydrodynamically focussed blood cells fabricated by ultraprecision micromachining by Kummrow, A, Theisen, J, Frankowski, M, Tuchscheerer, A, Yildirim, H, Brattke, K, Schmidt, M, Neukammer, J

“…We present three-dimensional microfluidic structures with integrated optical fibers, mirrors and electrodes for flow cytometric analysis of blood cells…”
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Excited state structure of 4-(dimethylamino)benzonitrile studied by femtosecond mid-infrared spectroscopy and ab initio calculations by Chudoba, C., Kummrow, A., Dreyer, J., Stenger, J., Nibbering, E.T.J., Elsaesser, T., Zachariasse, K.A.

“…Combining femtosecond transient vibrational spectroscopy and high-level calculations is a powerful tool in the determination of excited-state structures…”
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Generation and characterization of spatially and temporally localized few-cycle optical wave packets by Grunwald, R., Kebbel, V., Griebner, U., Neumann, U., Kummrow, A., Rini, M., Nibbering, E. T. J., Piché, M., Rousseau, G., Fortin, M.

“…Direct experimental evidence of localized few-cycle wave packets with a characteristic spatiotemporal X shape is reported. These wave packets are also referred…”
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Fluorescence of native and carotenoid‐depleted LH2 from Chromatium minutissimum, originating from simultaneous two‐photon absorption in the spectral range of the presumed (optically ‘dark’) S1 state of carotenoids by Krikunova, M, Kummrow, A, Voigt, B, Rini, M, Lokstein, H, Moskalenko, A, Scheer, H, Razjivin, A, Leupold, D

“…Native and carotenoid‐depleted peripheral purple bacterial light‐harvesting complex (LH2) were investigated by simultaneous two‐photon excited (between…”
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Optical dephasing of neat liquids and liquid crystals studied by forced light scattering by Kummrow, A.

“…The dephasing of induced dipole moments in neat liquids is studied for the first time. The use of incoherent light instead of single femtosecond pulses is…”
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In-vivo tissue optical properties derived by linear perturbation theory for edge-corrected time-domain mammograms by Wassermann, Bernhard, Kummrow, A, Moesta, K, Grosenick, D, Mucke, J, Wabnitz, H, Moller, M, Macdonald, R, Schlag, P, Rinneberg, H

“…A valuable method is described to analyze time-domain optical mammograms measured in the slab-like geometry of the slightly compressed female breast with a…”
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Wave Packet Dynamics in Ultrafast Spectroscopy of the Hydrated Electron by Kummrow, A, Emde, M. F, Baltuška, A, Pshenichnikov, M. S, Wiersma, D. A

“…Hydrated-electron dynamics is examined by frequency-resolved pump−probe experiments using pulses of 13 fs centered at 780 nm. A recurrence at ∼40 fs signifies…”
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Femtosecond ultraviolet pulses generated using noncollinear optical parametric amplification and sum frequency mixing by Kummrow, A., Wittmann, M., Tschirschwitz, F., Korn, G., Nibbering, E.T.J.

“…We demonstrate the generation of ultraviolet 33-fs pulses with a shot-to-shot energy fluctuation of less than 3% using sum frequency mixing of visible pulses…”
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Strong S 1 −S 2 Vibronic Coupling and Enhanced Third Order Hyperpolarizability in the First Excited Singlet State of Diphenylhexatriene Studied by Time-Resolved CARS by Werncke, W., Hogiu, S., Pfeiffer, M., Lau, A., Kummrow, A.

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Strong S1−S2 Vibronic Coupling and Enhanced Third Order Hyperpolarizability in the First Excited Singlet State of Diphenylhexatriene Studied by Time-Resolved CARS by Werncke, W, Hogiu, S, Pfeiffer, M, Lau, A, Kummrow, A

“…A strong S1−S2 vibronic coupling effect is observed in the time-resolved coherent anti-Stokes Raman spectroscopy (CARS) spectra originating from the first…”
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Droplet digital PCR for accurate quantification and detection of outbreak pathogens by Falak, S., Valiente, E., Kummrow, A., Kammel, M., Martin, A., Grunert, H., Dühring, U., Zeichhardt, H., Ehret, R., Obermeier, M., Macdonald, R.

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Dynamics in condensed molecular systems studied by incoherent light by Kummrow, A., Lau, A.

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Subpicosecond two-dimensional Raman spectroscopy applying broadband nanosecond laser radiation by Lau, A., Pfeiffer, M., Kummrow, A.

“…We report first experimental and theoretical results applying non-transform-limited nanosecond laser pulses for realizing a fifth order Raman effect in…”
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Evaluation of higher-order time-domain perturbation theory of photon diffusion on breast-equivalent phantoms and optical mammograms by Grosenick, D, Kummrow, A, Macdonald, R, Schlag, P M, Rinneberg, H

“…Time-domain perturbation theory of photon diffusion up to third order was evaluated for its accuracy in deducing optical properties of breast tumors using…”
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Strong vibronic coupling in the first excited singlet state of diphenylhexatriene by an asymmetric low-frequency mode by Pfeiffer, M., Werncke, W., Hogiu, S., Kummrow, A., Lau, A.

“…Raman studies of diphenylhexatriene in the first excited singlet state evidence strong vibronic coupling between two close 1B u/2A g states. The geometrical…”
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Determination of damped molecular rotation in the liquid phase using interferometric coherent Raman scattering by Kozich, V. P., Lau, A., Pfeiffer, A. M., Kummrow, A.

“…Extremely low wavenumber responses of 3,3′‐diethylthiadicarbocyanine iodide (DTDCI) in methanol, neat benzene, nitrobenzene and carbon disulfide were observed…”
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Interferometric coherent Raman spectroscopy with incoherent light: Some applications by Schaertel, S. A., Albrecht, A. C., Lau, A., Kummrow, A.

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Microflow cytometers with integrated hydrodynamic focusing by Frankowski, Marcin, Theisen, Janko, Kummrow, Andreas, Simon, Peter, Ragusch, Hülya, Bock, Nicole, Schmidt, Martin, Neukammer, Jörg

“…This study demonstrates the suitability of microfluidic structures for high throughput blood cell analysis. The microfluidic chips exploit fully integrated…”
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Shedding Light on Excited-State Structures by Theoretical Analysis of Femtosecond Transient Infrared Spectra:  Intramolecular Charge Transfer in 4-(Dimethylamino)benzonitrile by Dreyer, Jens, Kummrow, Andreas

“…We performed a detailed theoretical analysis of femtosecond transient infrared spectra to determine excited-state structures involved in photoinduced…”
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