@book{OPUS4-11084, title = {Physik Methodik : Handbuch f{\"u}r die Sekundarstufe I und II}, editor = {Mikelskis-Seifert, Silke and Rabe, Thorid}, publisher = {Cornelsen}, address = {Berlin}, isbn = {978-3-589-22377-0}, pages = {240 S.}, year = {2007}, language = {de} } @article{Rabe2007, author = {Rabe, Thorid}, title = {Sch{\"u}lerzentierte Unterrichtsans{\"a}tze : Kooperatives Lernen in Gruppen}, isbn = {978-3-589-22377-0}, year = {2007}, language = {de} } @article{Menzel2007, author = {Menzel, Ralf}, title = {Photonics : linear and nonlinear interactions of laser light and matter}, publisher = {Springer}, address = {Berlin}, isbn = {978-540-67074-2}, pages = {1024 S.}, year = {2007}, language = {en} } @article{PalusKurthsSchwarzetal.2007, author = {Palus, Milan and Kurths, J{\"u}rgen and Schwarz, Udo and Seehafer, Norbert and Novotna, Dagmar and Charvatova, Ivanka}, title = {The solar activity cycle is weakly synchronized with the solar inertial motion}, doi = {10.1016/j.physleta.2007.01.039}, year = {2007}, abstract = {We study possible interrelations between the 300-year record of the yearly sunspot numbers and the solar inertial motion (SIM) using the recently developed technique of synchronization analysis. Phase synchronization of the sunspot cycle and the SIM is found and statistically confirmed in three epochs (1734-1790, 1855-1875 and 1907-1960) of the whole period 1700-2000. These results give quantitative support to the hypothesis that there is a weak interaction between the solar activity and the SIM.}, language = {en} } @article{Mikelskis2007, author = {Mikelskis, Helmut F.}, title = {Unterrichtsprinzipien : exemplarisch - genetisch - sokratisch}, isbn = {978-3-589-22377-0}, year = {2007}, language = {de} } @article{MikelskisSeifertRabe2007, author = {Mikelskis-Seifert, Silke and Rabe, Thorid}, title = {Der darbietende Unterricht : darbieten - was und wie?}, isbn = {978-3-589-22377-0}, year = {2007}, language = {de} } @article{KofodWirgesPaajanenetal.2007, author = {Kofod, Guggi and Wirges, Werner and Paajanen, Mika and Bauer, Siegfried}, title = {Energy minimization for self-organized structure formation and actuation}, issn = {0003-6951}, doi = {10.1063/1.2695785}, year = {2007}, abstract = {An approach for creating complex structures with embedded actuation in planar manufacturing steps is presented. Self-organization and energy minimization are central to this approach, illustrated with a model based on minimization of the hyperelastic free energy strain function of a stretched elastomer and the bending elastic energy of a plastic frame. A tulip-shaped gripper structure illustrates the technological potential of the approach. Advantages are simplicity of manufacture, complexity of final structures, and the ease with which any electroactive material can be exploited as means of actuation. (c) 2007 American Institute of Physics.}, language = {en} } @book{Barcelo2007, author = {Barcel{\´o}, Pedro}, title = {Alexander der Große}, publisher = {Primus-Verl.}, address = {Darmstadt}, isbn = {978-3-89678-610-4}, pages = {272 S.}, year = {2007}, language = {de} } @article{KowarikGerlachLeitenbergeretal.2007, author = {Kowarik, Stefan and Gerlach, Andreas and Leitenberger, Wolfram and Hu J, Witte and W{\"o}ll, Christoph and Schreiber, Frank}, title = {Energy-dispersive X-ray reflectivity and GID for real-time growth studies of pentacene thin films}, issn = {0040-6090}, doi = {10.1016/j.tsf.2006.12.020}, year = {2007}, abstract = {We use energy-dispersive X-ray reflectivity and grazing incidence diffraction (GID) to follow the growth of the crystalline organic semiconductor pentacene on silicon oxide in-situ and in real-time. The technique allows for monitoring Bragg reflections and measuring X-ray growth oscillations with a time resolution of 1 min in a wide q-range in reciprocal space extending over 0.25-0.80 angstrom(-1), i.e. sampling a large number of Fourier components simultaneously. A quantitative analysis of growth oscillations at several q-points yields the evolution of the surface roughness, showing a marked transition from layer-by-layer growth to strong roughening after four monolayers of pentacene have been deposited. (c) 2006 Elsevier B.V. All rights reserved.}, language = {en} } @phdthesis{Velagapudi2008, author = {Velagapudi, Rama Krishna}, title = {Preparation and characterization of thermally stable guest-host Polymer thin films for non-lunear optical applications}, address = {Potsdam}, pages = {111 S., i-viii, : graph. Darst.}, year = {2008}, language = {en} } @phdthesis{Velagapudi2008, author = {Velagapudi, Rama Krishna}, title = {Preparation and characterization of thermally stable guest-host polymer thin films for non-linear optical applications}, address = {Potsdam}, pages = {viii, 112 S.: Ill., graph. Darst.}, year = {2008}, language = {en} } @article{QiuMellingerWirgesetal.2007, author = {Qiu, Xunlin and Mellinger, Axel and Wirges, Werner and Gerhard, Reimund}, title = {Spectroscopic study of dielectric barrier discharges in cellular polypropylene ferroelectrets}, doi = {10.1063/1.2786597}, year = {2007}, abstract = {The transient light emission from the dielectric barrier discharges (DBDs) in cellular polypropylene ferroelectrets subjected to high electric poling fields was spectroscopically measured. The spectrum shows strong emission from the second positive system of molecular nitrogen, N-2(C (3)Pi(u))-> N-2(B (3)Pi(g)), and the first negative system of N-2(+), N-2(+)(B (2)Sigma(+)(u))-> N-2(+)(X (2)Sigma(+)(g)), consistent with a DBD in air. When a dc voltage is applied stepwise to the ferroelectret film, light emission starts above a threshold, coinciding with the threshold voltage in obtaining piezoelectricity. From selected vibronic band strength ratios, the electric field in the discharge was determined and found to agree with Townsend breakdown.}, language = {en} } @phdthesis{Kasper2008, author = {Kasper, Lutz}, title = {Diskursiv-narrative Elemente f{\"u}r den Physikunterricht. Entwicklung und Evaluation einer multimedialen Lernumgebung zum Erdmagnetismus}, address = {Potsdam}, pages = {253 S. : graph. Darst.}, year = {2008}, language = {de} } @phdthesis{Blecua2008, author = {Blecua, Pedro}, title = {Liquid morphologies on patterned surfaces}, address = {Potsdam}, pages = {104 S. : graph. Darst.}, year = {2008}, language = {en} } @phdthesis{Rausche2008, author = {Rausche, Germar}, title = {Ein Verfahren zur Bestimmung des Magnetfeldes in aktiven Strukturen der Sonnenkorona}, address = {Potsdam}, pages = {I, 109 S. : Ill., graph. Darst.}, year = {2008}, language = {de} } @article{FeudelTuckermanGellertetal.2015, author = {Feudel, Fred and Tuckerman, L. S. and Gellert, Marcus and Seehafer, Norbert}, title = {Bifurcations of rotating waves in rotating spherical shell convection}, series = {Physical Review E}, volume = {92}, journal = {Physical Review E}, number = {5}, publisher = {American Physical Society}, address = {Woodbury}, issn = {1539-3755}, doi = {10.1103/PhysRevE.92.053015}, year = {2015}, abstract = {The dynamics and bifurcations of convective waves in rotating and buoyancy-driven spherical Rayleigh-Benard convection are investigated numerically. The solution branches that arise as rotating waves (RWs) are traced by means of path-following methods, by varying the Rayleigh number as a control parameter for different rotation rates. The dependence of the azimuthal drift frequency of the RWs on the Ekman and Rayleigh numbers is determined and discussed. The influence of the rotation rate on the generation and stability of secondary branches is demonstrated. Multistability is typical in the parameter range considered.}, language = {en} } @phdthesis{Habicht2016, author = {Habicht, Klaus}, title = {Neutron-resonance spin-echo spectroscopy}, school = {Universit{\"a}t Potsdam}, pages = {276}, year = {2016}, language = {en} } @phdthesis{Kruesemann2016, author = {Kr{\"u}semann, Henning}, title = {First passage phenomena and single-file motion in ageing continuous time random walks and quenched energy landscapes}, school = {Universit{\"a}t Potsdam}, pages = {122}, year = {2016}, abstract = {In der Physik gibt es viele Prozesse, die auf Grund ihrer Komplexit{\"a}t nicht durch physikalische Gleichungen beschrieben werden k{\"o}nnen, beispielsweise die Bewegung eines Staubkorns in der Luft. Durch die vielen St{\"o}ße mit Luftmolek{\"u}len f{\"u}hrt es eine Zufallsbewegung aus, die so genannte Diffusion. Auch Molek{\"u}le in biologischen Zellen diffundieren, jedoch befinden sich in einer solchen Zelle im selben Volumen viel mehr oder viel gr{\"o}ßere Molek{\"u}le. Das beobachtete Teilchen st{\"o}ßt dementsprechend {\"o}fter mit anderen zusammen und die Diffusion wird langsamer, sie wird subdiffusiv. Mit der Zeit kann sich die Charakteristik der Subdiffusion {\"a}ndern; dies wird als (mikroskopisches) Altern bezeichnet. Ich untersuche in der vorliegenden Arbeit zwei mathematische Modelle f{\"u}r eindimensionale Subdiffusion, einmal den continuous time random walk (CTRW) und einmal die Zufallsbewegung in einer eingefrorenen Energielandschaft (QEL=quenched energy landscape). Beide sind Sprungprozesse, das heißt, sie sind Abfolgen von r{\"a}umlichen Spr{\"u}ngen, die durch zufallsverteilte Wartezeiten getrennt sind. Die Wartezeiten in der QEL sind r{\"a}umlich korrelliert, w{\"a}hrend sie im CTRW unkorrelliert sind. Ich untersuche in der vorliegenden Arbeit verschiedene statistische Gr{\"o}ßen in beiden Modellen. Zun{\"a}chst untersuche ich den Einfluss des Alters und den Einfluss der Korrellationen einer QEL auf die Verteilung der Zeiten, die das diffundierendes Teilchen ben{\"o}tigt, um eine (r{\"a}umliche) Schwelle zu {\"u}berqueren. Ausserdem bestimme ich den Effekt des Alters auf Str{\"o}me von (sub)diffundierenden Partikeln, die sich auf eine absorbierende Barriere zubewegen. Zuletzt besch{\"a}ftige ich mich mit der Diffusion einer eindimensionalen Anordnung von Teilchen in einer QEL, in der diese als harte Kugeln miteinander wechselwirken. Dabei vergleiche ich die gemeinsame Bewegung in einer QEL und als individuelle CTRWs miteinander {\"u}ber die Standartabweichung von der Startposition, f{\"u}r die ich das Mittel {\"u}ber mehrere QELs untersuche. Meine Arbeit setzt sich zusammen aus theoretischen {\"U}berlegungen und Berechnungen sowie der Simulation der Zufallsprozesse. Die Ergebnisse der Simulation und, soweit vorhanden, experimentelle Daten werden mit der Theorie verglichen.}, language = {en} } @phdthesis{Anielski2015, author = {Anielski, Alexander}, title = {Entwicklung einer mikrofluidischen, adaptiv geregelten Messapparatur zur quantitativen Untersuchung von Chemotaxis mit Hilfe der Flussfotolyse}, school = {Universit{\"a}t Potsdam}, pages = {iv, 130 Seiten : Illustrationen, Diagramme + 1 DVD}, year = {2015}, language = {de} } @phdthesis{Wenz2016, author = {Wenz, Leonie}, title = {Climate change impacts in an increasingly connected world}, school = {Universit{\"a}t Potsdam}, pages = {279}, year = {2016}, language = {en} }