TY - GEN
AU - Fuchs, Christian
ID - 42609
T2 - Counterfire
TI - “Twitter Mobs“ and the Structural Violence of Neoliberalism
ER -
TY - GEN
AU - Fuchs, Christian
ID - 42611
IS - 1
T2 - Philosophy of the Social Sciences
TI - Review of “The problem of order in the global age. Systems and mechanisms“ (Andreas Pickel)
VL - 41
ER -
TY - GEN
AU - Kraft, Kerstin
ID - 42855
TI - ‚Grundlegende Betrachtungen zur Technik – Technomorphologische Analysen des Textilen’
ER -
TY - GEN
AU - Kraft, Kerstin
ID - 42854
TI - ‚Glamour und Grauen. Das Erforschen und Ausstellen von Bekleidung aus den 1930er und 1940er Jahren’
ER -
TY - GEN
AU - Kraft, Kerstin
ID - 42856
TI - Cutting Patterns
ER -
TY - JOUR
AB - Nanoporous ZnO powders with high surface-to-mass ratios (SMR) between 15 and 70 m2 g−1 are synthesized, structurally characterized, and studied by time-resolved photoluminescence (PL). A strong dependence of the recombination dynamics and spectral width on SMR is observed at T = 10 K, and pronounced disorder-induced effects are found in the temperature dependence. Both the thermally induced shift of the PL maximum and the spectrally integrated PL intensity are interpreted by appropriate theoretical models. This consistent quantitative analysis of the experimental data yields a characteristic energy of 15 meV for the disorder scale in the nanoporous ZnO sample with an intermediate SMR.
AU - Chernikov, Alexej
AU - Horst, Swantje
AU - Waitz, Thomas
AU - Tiemann, Michael
AU - Chatterjee, Sangam
ID - 25965
JF - The Journal of Physical Chemistry C
SN - 1932-7447
TI - Photoluminescence Properties of Ordered Mesoporous ZnO
ER -
TY - GEN
AU - Sevignani, Sebastian
AU - Kreilinger, Verena
AU - Allmer, Thomas
AU - Fuchs, Christian
ID - 42970
SN - 2219-603X
TI - Analysis of Existing Empirical Research Methods for Studying (Online) Privacy and Surveillance
ER -
TY - GEN
AU - Allmer, Thomas
ID - 42969
SN - 2219-603X
TI - Towards a Critical Theory of Surveillance Studies
ER -
TY - JOUR
AU - Allmer, Thomas
ID - 43008
IS - 2
JF - tripleC
TI - Critical Surveillance Studies in the Information Society
VL - 9
ER -
TY - BOOK
ED - Sandoval , Marisol
ED - Sevignani, Sebastian
ED - Rehbogen, Alexander
ED - Allmer, Thomas
ED - Hager, Matthias
ED - Kreilinger, Verena
ID - 42946
TI - Bildung MACHT Gesellschaft
ER -
TY - JOUR
AB - Due to the electrical, sensory and optical properties the interest on ZnO-based devices including thin-film transistors (TFT) aroused. The main concerns, when using ZnO nanoparticles (NP-ZnO) in TFT, are the low charge carrier mobility and the hysteresis when poly(4-vinylphenol) (PVP) is used as gate dielectric. It is well-known that the mobility in NP-ZnO films can be enhanced by the subsequent hydrothermal decomposition of zinc salts. The electrical behavior as a function of time and temperature is investigated, taking the NP-ZnO without addition of zinc acetate as reference. The addition of zinc acetate leads to a device with better performance, with increased drain current level and without the presence of the hysteresis in the transfer characteristic. The formation reaction was performed at a temperature of 200°C, which enables process compatibility to some plastic substrates.
AU - Vidor, Fábio Fedrizzi
AU - Wirth, Gilson Inácio
AU - Wolff, Karsten
AU - Hilleringmann, Ulrich
ID - 39533
IS - 1
JF - ECS Transactions
KW - General Medicine
SN - 1938-5862
TI - Study on the Performance Enhancement of ZnO Nanoparticles Thin-Film Transistors
VL - 39
ER -
TY - JOUR
AU - Wolff, K.
AU - Hilleringmann, Ulrich
ID - 39527
IS - 1
JF - Solid-State Electronics
KW - Materials Chemistry
KW - Electrical and Electronic Engineering
KW - Condensed Matter Physics
KW - Electronic
KW - Optical and Magnetic Materials
SN - 0038-1101
TI - Solution processed inverter based on zinc oxide nanoparticle thin-film transistors with poly(4-vinylphenol) gate dielectric
VL - 62
ER -
TY - CONF
AU - Frers, Torsten
AU - Hett, Thomas
AU - Hilleringmann, Ulrich
AU - Berth, Gerhard
AU - Widhalm, Alex
AU - Zrenner, Artur
ID - 39536
T2 - 2011 Semiconductor Conference Dresden
TI - Characterization of SiON integrated waveguides via FTIR and AFM measurements
ER -
TY - CONF
AU - Wiegand, C.
AU - Hangmann, C.
AU - Hedayat, C.
AU - Hilleringmann, Ulrich
ID - 39528
T2 - 2011 Semiconductor Conference Dresden
TI - Modeling and simulation of arbitrary ordered nonlinear charge-pump phase-locked loops
ER -
TY - CONF
AU - Hilleringmann, Ulrich
AU - Wolff, K.
AU - Assion, F.
AU - Vidor, F. F.
AU - Wirth, G. I.
ID - 39530
T2 - IEEE Africon '11
TI - Semiconductor nanoparticles for electronic device integration on foils
ER -
TY - CONF
AU - Reinhold, C
AU - Hangmann, C
AU - Mager, T
AU - Hedayat, C
AU - Hilleringmann, Ulrich
ID - 39537
T2 - Proc. 5th Int. Conf. on electromagnetic Near-field Characterization and Imaging (ICONIC) 2011
TI - Plane wave spectrum expansion from near-field measurements on no-planar lattices
ER -
TY - CHAP
AU - Höink, Dominik
AU - Jacob, Andreas
ED - Meier, Christel
ED - Wagner-Egelhaaf, Martina
ID - 43117
SN - 9783050057132
T2 - Autorschaft. Ikonen – Stile – Institutionen
TI - Krisen der Autorschaft bei Bruckner und Reger als Insignien der beginnenden musikalischen Moderne
ER -
TY - JOUR
AU - Höink, Dominik
ID - 43116
JF - Kirchenmusikalisches Jahrbuch
SN - 978-3-506-77571-9
TI - Anton Bruckner und Franz Liszt. Zur Konstruktion kirchenmusikalischer Idealbilder
VL - 95
ER -
TY - JOUR
AB - For numerous applications, the computation and provision of exact derivative information plays an important role for optimizing the considered system. This paper introduces the technique of algorithmic differentiation, a method to compute derivatives of arbitrary order within working precision. This derivative information will be combined with a calculus-based optimization algorithm to optimize a non-trivially shaped laser pulse which coherently steers the electron dynamics in a semiconductor quantum wire. Numerical results illustrating the cost for the derivative computation and the optimization process are presented and discussed.
AU - Meier, Torsten
AU - Reichelt, Matthias
AU - Walther, A.
ID - 43202
IS - 4
JF - Photonics and Nanostructures - Fundamentals and Applications
TI - Calculus-based optimization of the electron dynamics in nanostructures
VL - 9
ER -
TY - CHAP
AU - Hälterlein, Jens
ED - Gäbler, Karsten
ID - 43383
T2 - Gesellschaftliche Ökologie. Beiträge zur Konstruktion geographischer Wirklichkeiten. Sozialgeographische Manuskripte
TI - Nachhaltiger Konsum. Neoliberale Subjekte zwischen grünem Lifestyle und gesellschaftlicher Verantwortung
VL - 12
ER -
TY - CHAP
AU - Hälterlein, Jens
ED - Feustel, Robert
ED - Koppo, Nico
ED - Schölzel, Hagen
ID - 43382
T2 - Wir sind nie aktiv gewesen. Interpassivität zwischen Kunst- und Gesellschaftskritik
TI - Weder Konsumismus noch Askese – Interpassivität! Über das kritische Potential des SUV-Fahrens
ER -
TY - GEN
AU - Feustel, Robert
AU - Schochow , Maximilian
ID - 43385
IS - 1
T2 - BEHEMOTH A Journal on Civilisation
TI - Zwischen Sprachspiel und Methode. Perspektiven der Diskursanalyse
VL - 4
ER -
TY - JOUR
AB - This paper classifies the maximal finite subgroups of SP₂ₙ(Q) for 1⩽n⩽11 up to GL₂ₙ(Q) conjugacy in .
AU - Kirschmer, Markus
ID - 42798
IS - 2
JF - Experimental Mathematics
KW - General Mathematics
SN - 1058-6458
TI - Finite Symplectic Matrix Groups
VL - 20
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Danzeglocke, Klaus
ED - Heye, Andreas
ED - Reinke, Stephan A.
ED - Schroeter-Wittke, Harald
ID - 43835
T2 - Singen im Gottesdienst. Ergebnisse und Deutungen einer empirischen Untersuchung in evangelischen Gemeinden
TI - Kommentar aus religionspädagogischer Sicht - Hymnologiedidaktische Überlegungen
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Markus, Peter
ID - 43842
T2 - Perspektiven für ein Europa im Zeitalter der Globalisierung. 60 Jahre Evangelische Akademie Villigst / Iserlohn
TI - Auf der Suche nach der Identität Europas - Kultur als transformatorische Kraft
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Klie, Thomas
ED - Kumlehn, Martina
ED - Kunz, Ralph
ED - Schlag, Thomas
ID - 43839
T2 - Lebenswissenschaft Praktische Theologie?
TI - Den Schein wahren. Neun Responsorien auf das praktisch-theologische Interesse an den Oberflächen
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Kohlschmidt, Volker
ED - Gündchen, Robert
ID - 43840
T2 - So fern und doch so nah... Wider das Vergessen
TI - Schaut hin! Rede für die Gedenkfeier am 2. April 2008
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
AU - Arnhold, Oliver
ED - Guttenberger, Gudrun
ED - Schroeter-Wittke, Harald
ID - 43837
T2 - Religionssensible Schulkultur
TI - Wewelsburg - Religionssensibilität an einem Ort des Schreckens
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
AU - Marti, Andreas
ED - Kunz, Ralph
ED - Marti, Andreas
ED - Plüss, David
ID - 43841
T2 - Reformierte Liturgik - kontrovers
TI - Hochkultur oder Popkultur?
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Guttenberger, Gudrun
ED - Schroeter-Wittke, Harald
ID - 43838
T2 - Religionssensible Schulkultur
TI - Religionssensible Musik - Eine Klangreise
ER -
TY - CHAP
AU - Schroeter-Wittke, Harald
ED - Guttenberger, Gudrun
ED - Schroeter-Wittke, Harald
ID - 43836
T2 - Religionssensible Schulkultur
TI - Was ist Religionssensibilität?
ER -
TY - CONF
AB - The intensity dependence of optically-induced injection currents in semiconductor quantum wells is investigated numerically. Oscillatory behavior of the electron charge current transients as function of intensity and time is predicted and explained.
AU - Pochwala, Michal
AU - Duc, Huynh Thanh
AU - Förstner, Jens
AU - Meier, Torsten
ID - 4312
KW - tet_topic_qw
SN - 2160-8989
T2 - CLEO:2011 - Laser Applications to Photonic Applications
TI - Intensity dependence of optically-induced injection currents in semiconductor quantum wells
ER -
TY - CONF
AB - We present numerical results of the mutual coupling between photonic crystal cavities and semiconductor quantum dots. Normal mode splitting between a single cavity mode and a single quantum dot is shown under weak excitation, while under strong excitation Q‐factor dependent side bands appear, according to the AC‐Stark effect. Coupled photonic crystals, aligned parallel but displaced under a 30°‐angle for efficient coupling, show line splittings of all eigenmodes, if a single eigenmode is resonantly coupled to a single quantum dot. The mutual coupling of N resonant quantum dots to a single cavity mode results in a N−−√
scaling of the splitting, known from quantum optics, but corrected by the field amplitude fraction for not collocated quantum dots.
AU - Declair, S.
AU - Song, X.
AU - Meier, Torsten
AU - Förstner, Jens
ID - 4043
IS - 123
KW - tet_topic_phc
KW - tet_topic_qd
T2 - THE FOURTH INTERNATIONAL WORKSHOP 2011
TI - Simulation of Mutual Coupling of Photonic Crystal Cavity Modes and Semiconductor Quantum Dots
VL - 1398
ER -
TY - JOUR
AB - A novel adaptive wavelet based method is presented that allows us to compute eigenvalues and eigenvectors of the electronic Schrödinger equation. Our method outperforms direct discretization methods with equidistant grid spacings, in particular, for problems that involve several length scales. As an application we present numerical evaluations of the energetically lowest exciton states for ordered and disordered semiconductor quantum wires.
AU - Meier, Torsten
AU - Mollet, Christian
AU - Kunoth, Angela
ID - 44059
IS - 1
JF - AIP Conference Proceedings
TI - Wavelet‐Based Adaptive Computations of the Excitonic Eigenstates of Disordered Semiconductor Quantum Wires
VL - 1398
ER -
TY - CONF
AB - We present an ab-initio method for calculating nonlinear and nonlocal optical effects in metallic slabs with sub-wavelength thickness. We find a strong localization of the second-harmonic current at the metal-vacuum interface.
AU - Wand, Mathias
AU - Schindlmayr, Arno
AU - Meier, Torsten
AU - Förstner, Jens
ID - 4048
KW - tet_topic_shg
SN - 2160-8989
T2 - CLEO:2011 - Laser Applications to Photonic Applications
TI - Theoretical approach to the ultrafast nonlinear optical response of metal slabs
ER -
TY - JOUR
AB - This article will highlight various aspects of the production process of high performance active elements made of ultra high-strength steels. Focus is put on the processing of thick sheet metal regarding hot forming by means of punching, embossing, and forging processes as well as on thermo-mechanical treatment. Due to the material thickness of the semi-finished parts/blanks used and owing to the high strength of the materials (Rm > 2600 MPa) current production techniques and parameters from the field of thin sheet metal can only be limitedly be transferred and have therefore been specially investigated for this application.
AU - Homberg, Werner
AU - Rostek, Tim
ID - 21456
JF - Key Engineering Materials
SN - 1662-9795
TI - High Performance Active Elements for Agricultural Machines Made of Ultra High-Strength Steels
ER -
TY - CONF
AU - Mennecart, Thomas
AU - Rostek, Tim
AU - Witulski, Jörg
AU - Brosius, Alexander
AU - Takkaya, A. Erman
AU - Homberg, Werner
ID - 21472
TI - Presshärten von Rohren und Profilen mittels formlos fester Stoffe
ER -
TY - CONF
AU - Homberg, Werner
AU - Rostek, Tim
ID - 21474
T2 - Proceedings. of the 10th International Conference on Technology of Plasticity (ICTP)
TI - High Performance Active Elements for Agricultural Machines Made of Ultra High-Strength Steels
ER -
TY - JOUR
AU - Fuchs, Christian
ID - 41658
IS - 6
JF - Sociology Compass
TI - Teaching & Learning Guide for: New Media, Web 2.0 and Surveillance
VL - 5
ER -
TY - JOUR
AU - Fuchs, Christian
ID - 41657
IS - 2
JF - Sociology Compass
TI - New Media, Web 2.0 and Surveillance
VL - 5
ER -
TY - CHAP
AU - Fuchs, Christian
ED - Erdogan, İrfan
ID - 42407
T2 - İletişimi anlamak (Understanding communication), 4th revised
TI - Preface
ER -
TY - GEN
AU - Fuchs, Christian
ID - 42723
SN - 2219-603X
TI - The Political Economy of Privacy on Facebook
ER -
TY - GEN
AU - Fuchs, Christian
ID - 42724
SN - 2219-603X
TI - The Political Economy of Privacy
ER -
TY - GEN
AU - Sevignani, Sebastian
AU - Kreilinger, Verena
AU - Allmer, Thomas
AU - Fuchs, Christian
ID - 42722
SN - 2219-603X
TI - Analysis of Existing Empirical Research Methods for Studying (Online) Privacy and Surveillance
ER -
TY - JOUR
AB - We report the correlation of the aging of Pd-doped SnO2 methane sensors with the change of the oxidation state of Pd. Mesoporous SnO2 doped with palladium species was prepared and exposed to different gas mixtures at high temperature (600 °C) to simulate long term usage. After each exposure step a fraction of the sample was cooled down to “freeze” the current oxidation state of Pd which was then analyzed by X-ray Absorption Near-Edge Spectroscopy (XANES) using the 'white line' (i.e. the absorption peak corresponding to the transition from the 2p3/2 core level to unoccupied 4 d states) intensity of the L(III) edge as a probe for the oxidation state. The Pd oxidation state correlates with the response of the resistive SnO2 sensor to methane gas, as determined by measuring the gas response to different concentrations of methane. Samples treated with 5000 ppm methane in air show a significant reduction of Pd(II) to Pd(0), depending clearly on the carrier gas (synthetic air, pure nitrogen) and on the temperature (600 °C vs. 300 °C).
AU - Wagner, T.
AU - Bauer, M.
AU - Sauerwald, T.
AU - Kohl, C.-D.
AU - Tiemann, Michael
ID - 25962
JF - Thin Solid Films
SN - 0040-6090
TI - X-ray absorption near-edge spectroscopy investigation of the oxidation state of Pd species in nanoporous SnO2 gas sensors for methane detection
ER -
TY - JOUR
AB - Capacitive sensors are the most commonly used devices for the detection of humidity because they are inexpensive and the detection mechanism is very specific for humidity. However, especially for industrial processes, there is a lack of dielectrics that are stable at high temperature (>200 °C) and under harsh conditions. We present a capacitive sensor based on mesoporous silica as the dielectric in a simple sensor design based on pressed silica pellets. Investigation of the structural stability of the porous silica under simulated operating conditions as well as the influence of the pellet production will be shown. Impedance measurements demonstrate the utility of the sensor at both low (90 °C) and high (up to 210 °C) operating temperatures.
AU - Wagner, Thorsten
AU - Krotzky, Sören
AU - Weiß, Alexander
AU - Sauerwald, Tilman
AU - Kohl, Claus-Dieter
AU - Roggenbuck, Jan
AU - Tiemann, Michael
ID - 25964
JF - Sensors
SN - 1424-8220
TI - A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica
ER -
TY - JOUR
AB - We report the synthesis of mesoporous tin dioxide (SnO2) materials with well-defined particle morphology. The products consist of uniform spheres with a diameter of 5 μm. The spheres are hierarchically porous with two distinct pore modes of 5.0 nm and 52 nm, respectively. This special porosity is the result of a synthesis procedure which involves a ‘hard templating’ (nanocasting) process. The product forms an approximately homogeneous monolayer of spheres on a sensor substrate and shows promising response to methane gas with low cross-sensitivity to water. The structural properties and gas-sensing performance are compared with a mesoporous SnO2 material without defined morphology, prepared by a ‘soft templating’ procedure.
AU - Smått, J.-H.
AU - Lindén, M.
AU - Wagner, T.
AU - Kohl, C.-D.
AU - Tiemann, Michael
ID - 25963
JF - Sensors and Actuators B: Chemical
SN - 0925-4005
TI - Micrometer-sized nanoporous tin dioxide spheres for gas sensing
ER -
TY - JOUR
AB - Mesoporous In2O3, synthesized by a nanocasting procedure, is used as a resistive gas sensor for ozone in very low concentrations (from 20 ppb to 2.4 ppm) at room temperature. Its sensing performance is substantially increased by illumination with blue light (460 nm, 2.7 eV). For low ozone concentrations the sensor response increases with increasing humidity. However, higher humidity also results in the occurrence of a saturation of the response at lower ozone concentrations; this is rationalized by assuming a poisoning of surface active sites by hydroxyl groups.
AU - Wagner, T.
AU - Hennemann, J.
AU - Kohl, C.-D.
AU - Tiemann, Michael
ID - 25961
JF - Thin Solid Films
SN - 0040-6090
TI - Photocatalytic ozone sensor based on mesoporous indium oxide: Influence of the relative humidity on the sensing performance
ER -
TY - JOUR
AU - Allmer, Thomas
ID - 43009
IS - 2
JF - Journal of Information, Communication & Ethics in Society
TI - A Critical Contribution to Theoretical Foundations of Privacy Studies
VL - 9
ER -
TY - CONF
AU - Meyer zu Hoberge, S.
AU - Hilleringmann, Ulrich
AU - Jochheim, C.
AU - Liebich, M.
ID - 39529
T2 - IEEE Africon '11
TI - Piezoelectric sensor array with evaluation electronic for counting grains in seed drills
ER -