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Related Experiment Videos

High resolution multi-temperature sensors for biomedical application.

G Urban1, A Jachimowicz, F Kohl

  • 1Institut für allgemeine Electrotechnik und Elektronik, Technical University Vienna, Austria.

Medical Progress Through Technology
|January 1, 1990
PubMed
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This study developed a high-resolution temperature sensor array for biological samples. The sensor achieves precise temperature measurements in brain tissue, aiding research into physiological conditions.

Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Materials Science

Background:

  • Understanding local temperature variations and gradients in biological tissues is crucial for physiological studies.
  • Existing temperature sensing technologies may lack the spatial resolution or responsiveness required for dynamic biological processes.

Purpose of the Study:

  • To design and characterize a high-resolution temperature sensor array for investigating local temperature changes in biological samples.
  • To assess the sensor's performance in monitoring temperature variations within the optical cortex of rabbits under different physiological conditions.

Main Methods:

  • Fabrication of a temperature sensor array using vacuum-evaporated germanium films on a thin glass substrate.
  • Integration of temperature-sensitive elements (0.14 mm x 0.1 mm) with high spatial resolution (0.4 mm interdistances).

Related Experiment Videos

  • Insertion of the sensor probe into the rabbit optical cortex for in vivo measurements.

    • Main Results:

    • Achieved a temperature resolution of 0.1 mK and a 90% response time of 3 milliseconds.
    • Demonstrated high spatial resolution for detecting localized temperature gradients.
    • Observed minimal self-heating (< 5 mK) under physiological measurement conditions.

    Conclusions:

    • The developed temperature sensor array offers high spatial and temperature resolution for biological applications.
    • The sensor is suitable for in vivo brain temperature monitoring, providing insights into neural activity and physiological responses.
    • The sensor's design minimizes tissue damage and ensures reliable measurements in complex biological environments.