Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Bart van der Schoot"'
Publikováno v:
CHIMIA, Vol 59, Iss 5 (2005)
Space biology is a young discipline that is strongly evolving thanks to the development of new measuring devices. The use of instruments equipped with new sensors and new technologies gives the opportunity to follow and understand better the experime
Externí odkaz:
https://doaj.org/article/f90ebe080d144eb5bc1faf1ff659bb03
Publikováno v:
CHIMIA, Vol 53, Iss 3 (1999)
Space biology is a young and rapidly developing discipline comprising basic research and biotechnology. In the next decades it will play a prominent role in the International Space Station (ISS). Therefore, there is an increasing demand for sophistic
Externí odkaz:
https://doaj.org/article/003b55c59d7f4f4f9363cdda46f9904c
Publikováno v:
Sensors and Actuators B: Chemical. 105:88-95
The earliest reports of integrated chemical sensor–actuator devices to perform coulometric acid–base titrations date back almost 20 years. Recently a first commercial instrument appeared that allows to perform very rapid, accurate acid–base det
Autor:
Hans Sundgren, Ingemar Lundström, Danick Briand, H. Wingbrant, Lars-Gunnar Ekedahl, Nicolaas F. de Rooij, Bart van der Schoot
Publikováno v:
Sensors and Actuators B: Chemical. 93:276-285
This communication presents a modulated mode of operation for MOSFET gas sensors. A low-power micromachined device allows pulsing the temperature of MOSFET gas sensors with a time constant less than 100ms. Modulating the temperature during the gas ex
Autor:
Bart van der Schoot, Danick Briand, Marc-Alexis Grétillat, Nicolaas F. de Rooij, Stephan Heimgartner
Publikováno v:
Journal of Micromechanics and Microengineering. 12:971-978
We have performed thermal measurements and electrothermal simulations (finite element modelling) with the aim of optimizing the power consumption and the temperature distribution of micro-hotplates for gas-sensing applications. A silicon island was a
Publikováno v:
Enzyme and Microbial Technology. 27:778-783
We describe here the performance and the use of microtechnology in a miniaturized bioreactor developed for the continuous cultivation of yeast cells, Saccharomyces cerevisiae, in microgravity. This bioreactor has been used on two Shuttle missions, wh
Autor:
Philippe Arquint, Klaus Schumann, Filip Van Steenkiste, Reinhard Born, Dirk Debruyker, Bart van der Schoot, Vincent Spiering, Kris Baert
Publikováno v:
Sensors and actuators. B: Chemical, 44(1-3), 409-412. Elsevier
A microsensor array to measure chemical properties of biological liquids is presented. A hybrid integration technique is used to mount four sensor chips on a micro flow channel: a pressure, temperature, pH, combined pO2 and pCO2 sensor chip. This res
Publikováno v:
Sensors and Actuators B: Chemical. 17:157-164
It has been shown that the accuracy of pH sensor devices based on insulator/electrolyte interface is limited by a slow response, which manifests itself as hysteresis and drift. In this paper, we use hysteresis measurement to compare the performance o
Autor:
Hans van den Vlekkert, Ingolf Grohmann, Werner Moritz, Fred Lisdat, H.C.G. Ligtenberg, Bart van der Schoot, Nico F. de Rooij
Publikováno v:
Sensors and Actuators B: Chemical. 15:223-227
A flow injection analysis system has been developed using a fluoride ISFET as detector and a pH ISFET as reference. We found that the application of acid solutions decreases the response time of the fluoride sensor. Optimum conditions are in a range
Autor:
Hans H. van der Vlekkert, H.C.G. Ligtenberg, Nico F. de Rooij, Bart van der Schoot, Werner Moritz
Publikováno v:
Sensors and Actuators B: Chemical. 13:217-220
Two types of pH-ISFETs were used as the basis for F − -FETs with Si 3 N 4 or Al 2 O 3 as sensitive layers, respectively. Deposition of LaF 3 on the gate isolator results in pF-ISFETs. A Nernstian sensitivity was reached with both kinds of fluoride