Polarization-independent active metamaterial for high-frequency terahertz modulation (2009)
Paul, O., Imhof, C., Lägel, B., Wolff, S., Heinrich, J., Höfling, S., ...
We present a polarization-independent metamaterial design for the construction of electrically tunable terahertz (THz) devices. The implemented structure consists of an array of gold crosses...
Intraoral drug delivery microsystem (2009)
Schuhmacher, A., Göttsche, T., Haeberle, S., Velten, T., Scholz, O., Wolff, A., ...
Paust, N., Krumbholz, S., Munt, S., Müller, C., Koltay, P., Zengerle, R., ...
A microfluidic fuel supply concept for passive and portable direct methanol fuel cells (DMFCs) that operates in all spatial orientations is presented. The concept has been proven by fabricating and...
Simulation of advanced microfluidic systems with dissipative particle dynamics (2009)
Steiner, T., Cupelli, C., Zengerle, R., Santer, M.
Computational Fluid Dynamics (CFD) is widely and successfully used in standard design processes for microfluidic mu TAS devices. But for an increasing number of advanced applications involving the...
Dynamic capillary wetting studied with dissipative particle dynamics (2008)
Cupelli, C., Henrich, B., Glatzel, T., Zengerle, R., Moseler, M., Santer, M.
We present a study on dynamic capillary wetting in the framework of dissipative particle dynamics (DPD) based on a novel wall model for wetting on solid boundaries. We consider capillary impregnation...
Negative index bulk metamaterial at terahertz frequencies (2008)
Paul, O., Imhof, C., Reinhard, B., Zengerle, R., Beigang, R.
Theuer, M., Imhof, C., Torosyan, G., Ellrich, F., Zengerle, R., Beigang, R.
We report on tershertz wave generation using transient photoconductivity induced by femtosecond laser pulses in semiconductor surfaces. In particular the dependence of terahertz emission...
Large area microfluidic devices with through holes by hot embossing. (2007)
Heckele, M., Mehne, C., Steger, R., Koltay, P., Zengerle, R., Warkentin, D.
MiNaT : Internat.Fachmesse und Kongress für Feinwerktechnik, Ultrapräzision, Micro- und Nano-Technologien, Stuttgart, 11.-15.Juni 2007
Increasing µDMFC efficiency by passive CO2 bubble removal and discontinuous operation (2006)
Litterst, C., Eccarius, S., Hebling, C., Zengerle, R., Koltay, P.
A new concept that enables fully passive CO2 gas bubble removal in micro direct methanol fuel cells (mu DMFCs) is presented. The original concept behind the presented degassing structure (flowfield)...
Lab-on-chip-based cell separation by combining dielectrophoresis and centrifugation (2006)
Böttcher, M., Jäger, M., Riegger, L., Ducrée, J., Zengerle, R., Duschl, C.
Capillary impregnation of nanopores studied with fluid particle methods (2006)
Cupelli, C., Henrich, B., Glatzel, T., Moseler, M., Zengerle, R., Santer, M.
Novel structure for passive CO2 degassing in uDMFC (2006)
Litterst, C., Eccarius, S., Hebling, C., Zengerle, R., Koltay, P.
Steger, R., Mehne, C., Wangler, N., Heckele, M., Zengerle, R., Koltay, P.
10th Internat.Conf.on Miniaturized Systems for Chemistry and Life Sciences (#mTAS), Tokyo, J, November 14-15, 2006
PipeJet: a simple disposable dispenser for the nano- and microliter range (2004)
Streule, W, Lindemann, T, Birkle, G, Zengerle, R, Koltay, P
This paper reports on a simple, disposable non-contact dispenser for the nano- and microliter range. In contrast to other known dispensers manufactured by silicon micromachining1., 2., 3. and 4. the...
Optimized creation of monolayers for parallel readout of bead-based asseays (2004)
Grumann, M., Dobmeier, M., Schippers, P., Brenner, T., Zengerle, R., Ducrée, J., ...
This publication presents the basic studies and the design optimization process of a microfluidic aggregation chamber in order to achieve highly periodical and mechanically stable monolayers of...
Grumann, M., Dobmeier, M., Schippers, P., Brenner, T., Kuhn, C., Fritsche, M., ...
In this paper, we for the first time simulate the process of hydrodynamic bead aggregation in a flat micro-fluicid chamber by a porous-media model in an iterative routine. This allows us to optimize...
Formation of hexagonal monolayers by flow of bead suspensions into flat microchambers (2003)
Grumann, M., Schippers, P., Dobmeier, M., Häberle, S., Geipel, A., Brenner, T., ...
To realize a highly parallel optical detection in bead-based bioanalytical assays, we investigate the hydrodynamic aggregation of bead suspensions in a hexagonally perodical monolayer by a...
Stacking of beads into monolayers by flow through flat microfluidic chambers (2003)
Grumann, M., Schippers, P., Dobmeier, M., Häberle, S., Geipel, A., Brenner, T., ...
This work presents the investigation of hydrodynamic filling of beads into flat microfluidic devices. A periodical hexagonal monolayer as aggregation pattern is favorable for parallel optical...
Fluidic microchip for bead-based assay system (2003)
Kuhn, C., Fritsche, M., Brenner, T., Grumann, M., Dobmeier, M., Schippers, P., ...
Miniaturisation of immunoassays is a major goal of upcoming proteomics and immuno diagnostics. Analytical systems, designed for the research market, should be very flexible in terms of set and number...
Hydrodynamic creation of monolayers for parallel readout of bead-based assays (2003)
Grumann, M., Dobmeier, M., Schippers, P., Brenner, T., Kuhn, C., Fritsche, M., ...
Zengerle, R., Wirtl, J., Frisch, H.
The micro valve has a valve body with aperture, and a relatively moveable valve plate with fluid passages. The sealing edge (42) of the valve aperture is formed, so that it is longer than that of a...
Verfahren und Vorrichtung zur Ansteuerung einer Mikropumpe (1997)
Zengerle, R., Richter, A., Kluge, S.
The invention relates to a process and a device for controlling a micropump by means of a driver signal in such a way that a conveyance direction defined by a valve structure is reversed, whereby the...
Mikrominiaturisierte, elektrostatisch betriebene Mikromembranpumpe (1995)
The description refers to an electrostatically operated diaphragm pump comprising a first pump body acting as the counterelectode body and a second pump body which has a diaphragm region. The two...
Mikrominiaturisierbares Ventil (1995)
A microminiaturizable valve comprises a pressure equalizing chamber, a first semi-active valve which is arranged between the pressure equalizing chamber and a first fluid line, and a second...
Hofmann, K.A., Richter, A., Zengerle, R.
In a process and a device for measuring the flow velocity of a gas or a liquid, a signal changing with time is applied between two electrodes which are electrically isolated from the gas or the...
Mikrominiaturisierte, elektrostatisch betriebene Mikromembranpumpe (1994)
The description refers to an electrostatically operated microdiaphragm pump having a first pump body acting as the counterelectrode body and a second pump body having a diaphragm region. The two pump...