A micro CO2 gas sensor based on sensing of pH-sensitive hydrogel swelling by means of a pressure sensor [PDF]
, 2005 In this paper a sensor is presented for the detection of carbon dioxide gas inside the stomach in order to diagnose gastrointestinal ischemia. The operational principle of the sensor is measuring the CO/sub 2/ induced pressure generation of a confined pH-
Berg, A. van den +4 more
core +2 more sources
Design and characteristic analysis of hybrid OFD–LFM–PC waveforms in the MIMO radar
The Journal of Engineering, 2019 In this study, a new set of hybrid orthogonal frequency division–linear frequency modulation–phase coded (OFD–LFM–PC) waveforms are proposed to improve the detection performance of multiple-input-multiple-output (MIMO) radars.
Sheng Hong +4 more
doaj +1 more source
A simple opto-fluidic switch detecting liquid filling in polymer-based microfluidic systems [PDF]
, 2007 A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg.
Bundgaard, F. +3 more
core +2 more sources
Thin film diffusion barrier formation in PDMS microcavities [PDF]
, 2009 We describe a method to form glass like thin film barrier in polydimethylsiloxane (PDMS) microcavities. The reactive fragments for the surface reaction were created from O2 and hexamethyldisiloxane (HMDS) in RF plasma environment.
Basabe-Desmonts, Lourdes +7 more
core +1 more source
Micromachined two dimensional resistor arrays for determination of gas parameters [PDF]
, 2003 A resistive sensor array is presented for two dimensional temperature distribution measurements in a micromachined flow channel. This allows simultaneous measurement of flow velocity and fluid parameters, like thermal conductivity, diffusion coefficient ...
Dijkstra, Marcel +7 more
core +2 more sources
Sensors, 2021 At present, sensors are increasingly used in all kinds of platforms, manned or unmanned, particularly in view of the emerging Internet of Things (IoT) [...]
Dimitris A. Gritzalis +2 more
openaire +3 more sources
Sustainable Multifunctional Biface Sensor Tag
Advanced Sensor Research, 2023 In this article, a sustainable, multifunctional, low‐cost, wireless sensor tag is presented. The sensor tag combines three different environmental sensors in one single platform for the dedicated purpose of wireless structural health monitoring of a ...
Lukas Rauter +11 more
doaj +1 more source
Ultrathin 2 nm gold as impedance-matched absorber for infrared light
Nature Communications, 2020 Long-term stability and broad spectral response are highly desired features of absorbers. Here, the authors report impedance matched absorbers based on 2 nm thick gold layer operating within the mid-infrared range from 2 to 20 μm, enabling stable long ...
Niklas Luhmann +7 more
doaj +1 more source
Hybrid integrated platform of PDMS microfluidics and silica capillary for effective CE and ESI-MS coupling [PDF]
, 2009 We present an effective hybrid integration of PDMS microfluidic devices and fused silica capillaries. These hybrid microfluidic integrated PDMS and silica capillary (iPSC) modules exhibit a novel architecture and method for leakage free CE sample ...
Dimov, Ivan Krastev +3 more
core +1 more source
Characterization of a Micro-Opto-Mechanical Transducer for the Electric Field Strength
Proceedings, 2018 We report on a new optical sensing principle for measuring the electric field strength based on MEMS technology. This method allows for distortion-free and point-like measurements with high stability regarding temperature.
Wilfried Hortschitz +7 more
doaj +1 more source