Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Wolfgang Streule"'
Publikováno v:
Sensors and Actuators A: Physical. 158:254-262
This paper reports on a non-contact optical sensor for the detection of single droplets in flight. The sensor allows for online process control of non-contact dispensing systems delivering droplets in the nanolitre range. A dispensed liquid droplet,
Publikováno v:
Sensors and Actuators A: Physical. 153:57-63
This paper reports on a sensor for the detection of microdroplets in flight. The presented sensor is based on a capacitive principle, which allows for non-contact monitoring of a complete droplet dispensing process. In the presented experiments the c
Autor:
Christian Litterst, Timo Lindemann, Roland Zengerle, Remigius Niekrawietz, Wolfgang Streule, Peter Koltay, C Moosmann, Thomas Glatzel, Claudio Cupelli
Publikováno v:
Computers & Fluids. 37:218-235
This paper reports on an exemplary study of the performance of commercial computational fluid dynamic (CFD) software programs when applied as engineering tool for microfluidic applications. Four commercial finite volume codes (CFD-ACE+, CFX, Flow-3D
Autor:
Juergen Steigert, Peter Koltay, M. Dube, Jens Ducrée, Roland Zengerle, Thilo Brenner, Wolfgang Streule, L. Riegger, K. Mittmann, Markus Grumann
Publikováno v:
Sensors and Actuators A: Physical. :228-233
We present a novel concept to determine relevant biochemical markers for applications in the field of emergency diagnostics. Our modular setup comprises a disposable polymer disk which hosts microfluidic structures and optical beam-guidance elements.
Publikováno v:
JALA: Journal of the Association for Laboratory Automation. 9:300-306
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 micromachining1-4 the new device simply consists of an elastic polymer tube with a circ
Autor:
Roland Zengerle, Sonja Niekrawitz, L. Riegger, Jonas Schöndube, Andre Gross, Peter Koltay, Wolfgang Streule
Publikováno v:
Journal of laboratory automation. 18(6)
Within the past years, single-cell analysis has developed into a key topic in cell biology to study cellular functions that are not accessible by investigation of larger cell populations. Engineering approaches aiming to access single cells to extrac
Autor:
N. Wangler, Peter Koltay, Martina Daub, Wolfgang Streule, Roland Zengerle, Monika Strasser, O. Brett, Juergen Steigert
Publikováno v:
Lab on a chip. 9(12)
We present a new tool for the precisely controlled transfer of individual picoliter (pL) droplets in the range of 150-950 pL at user defined local positions within aqueous liquid environments while avoiding any leakage by diffusion. This is achieved
Publikováno v:
TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference.
In this paper we present a sensor for non-contact monitoring of dispensed micro-droplets on the fly. In extension to our previous work [1], the sensor now allows for a direct, quantitative volume determination of single liquid droplets in the volume
Autor:
Roland Zengerle, Michal Marek Mielnik, Wolfgang Streule, Daniel Mark, Peter Koltay, L. Riegger, M. Clad
Publikováno v:
TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference.
We provide a new method for the selective surface patterning of microfluidic chips with hydrophobic fluoropolymers which is demonstrated by the fabrication of hydrophobic valves. It enables efficient optical quality control for the surface patterning
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 24(17)
In this work we introduce a novel tubing design for multiphase flow that minimizes gas bubble resistance. The design termed "StarTube" has a lamella-like wall structure and was developed to prevent clogging by gas bubbles. This is performed by forcin