Optimised NDIR Technology for $^{13}{\rm CO}_2$ Breath Tests of i.e. Drug/Drug-Interactions or Gastric Emptying for Intensive Care Patients: New Diagnostic Opportunities

Vogt, J.; Nahoussi, N.; Fabinski, W.; Kappler, J.P.; Georgieff, Michael; Hölscher, Uvo

doi:10.1007/978-3-642-03885-3_236

Cited by 2 publications

(2 citation statements)

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“…Smart gas sensing systems have been successfully introduced to a variety of commercial and industrial applications. Gas sensing systems are used for example in the health care sector for breath diagnostics [1,2], to monitor specific gaseous substances in the agricultural and processing industry [3][4][5], to control carbon dioxide concentrations in heating ventilation and air conditioning systems [6][7][8][9][10] and to investigate environ mental changes of the climate [11][12][13]. In particular, gas sensing systems based on non-dispersive infrared (NDIR) spectroscopy have attracted considerable interest due to the simplicity of the sensing principle and for being cost-efficient in fabrication [14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of an infrared emitter using a generic integration platform based on wire bonding

Schröder

Rödjegård

Fischer

et al. 2016

J. Micromech. Microeng.

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Abstract. This paper reports a novel approach for the fabrication of infrared (IR) emitters for non-dispersive infrared gas sensing. The proposed concept enables the integration of superior resistive heater materials with microelectromechanical systems (MEMS) structures. In this study, non-bondable filaments made of nickel chromium are attached to mechanical attachment structures using a fully automated state-of-the-art wire bonder. The formation of the electrical contacts between the integrated filaments and the electrical contact pattern on the substrate is performed using conventional gold stud bumping technology. The placement accuracy of the integrated filaments is evaluated using white-light interferometry, while the contact formation using stud bumping to embed the filaments is investigated using focus ion beam milled crosssections. A proof-of-concept IR emitter has been successfully operated and heated up to 960• C in continuous mode for 3 hours.Wire bonding, integration platform, stud bumping, MEMS, MEMS-based infrared emitter, NDIR, gas sensing, non-bondable materials, nickel-chromium wire, NiCr filament, Nikrothal wire, resistive heating, joule heating:

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Section: Introductionmentioning

confidence: 99%

Fabrication of an infrared emitter using a generic integration platform based on wire bonding

Schröder

Rödjegård

Fischer

et al. 2016

J. Micromech. Microeng.

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“…At present, the most common method of the detection of CO 2 for capnography is nondispersive infrared spectroscopy (NDIR) [4,5] . The disadvantage of NDIR is that frequent calibration and different optical filters are required because the method is susceptible to variations in the light source and to background drift.…”

mentioning

confidence: 99%

Hollow-waveguide-based carbon dioxide sensor for capnography

Xiong

Liu

et al. 2015

中国光学快报

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A CO 2 sensor for capnography, based on a hollow waveguide (HWG) and tunable diode laser absorption spectroscopy (TDLAS), is presented; the sensor uses direct absorption spectroscopy and requires neither frequent calibration nor optical filters, giving it a significant advantage over existing techniques. Because of the HWG, the CO 2 measurement achieved a concentration resolution of 60 ppm at a measurement rate of 25 Hz, as characterized by Allan variance. The length of the HWG was selected to efficiently suppress the optical fringes. This setup is perfectly suited for the detection of CO 2 by capnography, and shows promise for the potential detection of other breath gases.

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Optimised NDIR Technology for $^{13}{\rm CO}_2$ Breath Tests of i.e. Drug/Drug-Interactions or Gastric Emptying for Intensive Care Patients: New Diagnostic Opportunities

Cited by 2 publications

References 10 publications

Fabrication of an infrared emitter using a generic integration platform based on wire bonding

Fabrication of an infrared emitter using a generic integration platform based on wire bonding

Hollow-waveguide-based carbon dioxide sensor for capnography

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