Technology

Gasera has developed new technologies to overcome drawbacks in common measurement solutions.

Patented cantilever enhanced photoacoustics

Gasera has been able to overcome drawbacks in common measurement solutions through the development of cantilever enhanced photoacoustics. This technology improves on Fourier transform infrared (FTIR) and photoacoustic spectroscopy (PAS) principles to meet the demands of the modern measurement market.

Our aim is to develop portable measurement devices with extremely high sensitivity, good selectivity and a fast response time for reliable analysis of gases, liquids and solid samples alike in demanding environments.

Gasera’s patented cantilever enhanced photoacoustics is a novel state of the art measuring technology that can be used in the detection and analysis of gases, liquids and solid materials in many applications and fields such as research, industry, environmental, safety and security.

Photoacoustic spectroscopy

The photoacoustic effect was discovered by Alexander Graham Bell in 1880 during his research to develop the photophone, a device that transmits speech on a beam of light. From its first demonstrations to being put into practical use with real utility has taken approximately a hundred years.

The major advantage of the photoacoustic effect is the fact that the sensitivity is much less dependent on the optical path length, as compared to other conventional methods. This allows for high sensitivity from a short absorption path length and a much more linear concentration response over a wide dynamic measurement range even from very low sample volumes. Photoacoustic spectroscopy (PAS) is now a commonly used method for the analysis of solid, semi-solid, liquid and gas samples.

  • Optical Cantilever MEMS Microphone

    High sensitivity is achieved by using a patented cantilever pressure sensor that is over hundred times more sensitive compared to a membrane, which is used in conventional techniques.

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  • Gas Phase PAS

    The need for rapid and reliable monitoring of air pollutants and hazardous gases is growing and the photoacoustic spectroscopy provides an efficient technology for this demand.

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  • Solid Phase PAS

    Photoacoustic spectroscopy is well suited and advantageous method for measurement and analysis of solid and semi-solid samples.

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Platforms

Gasera’s highly sensitive cantilever sensor -based photoacoustic technology can be utilized in a wide variety of applications. Our different measurement platforms form a wide variety of measurement setups tailored for your specific needs and requirements.

  • Laser PAS

    Laser-based sensing techniques are attracting great interest in various fields of applications.

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  • Optical Filter PAS

    Photoacoustic spectroscopy (PAS) is based on the absorption of modulated infrared light leading to the local warming of the absorbing gas volume element.

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  • Differential PAS

    The differential photoacoustic method combines the sensitivity of photoacoustic spectroscopy with the long absorption path length used by conventional absorption spectroscopy and allows open-path and flow-through detection of gases.

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  • FTIR-PAS

    FTIR is a widely used method for obtaining IR spectra of a sample. The sample is exposed to IR radiation modulated by an interferometer and the intensity of transmitted radiation is monitored via an IR detector.

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Publications

It is part of our heritage to co-operate with universities and research institutions. Our focus is on improving our measurement technology, device miniaturization and exploring new applications. Our products are widely used and accepted in scientific research. Please visit our Research Library to learn more about how Gasera’s products can help you forward your mission.

research articles