Results 261 to 270 of about 127,368 (296)
Some of the next articles are maybe not open access.
A Portable CMOS Based pH Sensor
2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS), 2020This paper demonstrates a portable pH sensing system which converts pH to a digital readout. The system consists of a CMOS ISFET pH sensor with discrete analog to digital conversion and display modules. The front end sensor was fabricated in standard 0.5 µm CMOS technology and an easy to use Arduino microcontroller is used as the computing device ...
Shaghayegh Aslanzadeh +3 more
openaire +1 more source
Passive multivariable RFID pH sensors
2011 IEEE International Conference on RFID-Technologies and Applications, 2011Sensing of pH with single-use gamma sterilizable sensors is needed in single-use bioprocess components. In this study, we explored pH sensing films based on polyaniline (PANI) that were deposited onto our recently developed passive radio-frequency identification (RFID) sensors.
Radislav A. Potyrailo, Timothy Wortley
openaire +1 more source
A remote query magnetoelastic pH sensor
Sensors and Actuators B: Chemical, 2000A remote query magnetoelastic pH sensor comprised of a magnetoelastic thick-film coated with a mass-changing pH-responsive polymer is described. In response to a magnetic query field the magnetoelastic sensor mechanically vibrates at a characteristic frequency that is inversely dependent upon the mass of the attached polymer layer.
Q Y, Cai, C A, Grimes
openaire +2 more sources
A Remotely Interrogatable Magnetochemical pH Sensor
1997 IEEE International Magnetics Conference (INTERMAG'97), 1997A new type of sensor is presented that allows for remote, in-situ, continuous, long term monitoring of given chemical stimuli. The sensor is comprised of a thin polymeric layer made so that it swells in the presence of certain stimuli, bounded on each side by a magnetically soft thin film.
C.A. Grimes +4 more
openaire +1 more source
meso-Tetraarylporpholactones as high pH sensors
The Analyst, 2010The ability of meso-tetra(pentafluorophenyl)porpholactone (T(F)PL) and its Pt(II) complex [meso-tetra(pentafluorophenyl)porpholactonato]Pt(II) (T(F)PLPt) to function as optical high pH sensors is described. Under strongly alkaline or high methoxide conditions, their UV-vis spectra undergo dramatic and reversible red-shifts.
Gamal E, Khalil +9 more
openaire +2 more sources
Model For An Optical Fiber Ph Sensor
SPIE Proceedings, 1987The present paper is concerned with the design of a model of fiber optic sensor for pH measurement in the physiological range (7. 0-7. 5). Up to now a few pH fiber optic sensor have been developed. The model here described makes use of a liquid optrode, formed by a dye solution contained within a membrane, attached to the end of a couple of optical ...
M.Bacci +6 more
openaire +2 more sources
Biocompatible fluorescent nanoparticles for pH-sensoring
Soft Matter, 2008Dialysis of a mixture of fluorescein and sulforhodamine B marked dextran derivatives yields biocompatible and tuneable nanosensors that can be used for ratiometric pH measurements.
Stephanie, Hornig +6 more
openaire +2 more sources
2014
Dynamic photonic structures can be modulated by changing the periodic structure and/or the index of refraction. These dynamic photonic structures allow responsive capability for sensing external stimuli to control the properties of light and act as optical transducers.
openaire +1 more source
Dynamic photonic structures can be modulated by changing the periodic structure and/or the index of refraction. These dynamic photonic structures allow responsive capability for sensing external stimuli to control the properties of light and act as optical transducers.
openaire +1 more source
Journal of bioengineering, 1978
This paper presents preliminary data on a new integrated circuit microelectronic pH sensor. The device is extremely miniaturized by the use of integrated circuit technology, and uses the intrinsic hydrogen ion selective properties of the gate insulator material.
S D, Moss +4 more
openaire +1 more source
This paper presents preliminary data on a new integrated circuit microelectronic pH sensor. The device is extremely miniaturized by the use of integrated circuit technology, and uses the intrinsic hydrogen ion selective properties of the gate insulator material.
S D, Moss +4 more
openaire +1 more source