The Technology
A novel analytical technology, MEES (Multiphoton Electron Extraction Spectroscopy), has been developed for sensitive compound detection and quantification under ambient conditions.
In this method the sample is irradiated by a laser and the photocurrents are measured as a function of excitation wavelength. The samples can be in solid phase (including crystals, films and powders), in liquid phase (including pure liquids and solutions) and in the gas phase (including pure gases, and mixtures). The spectra represent transitions between the molecular energy levels, starting from the ground state and also from excited states. As a result, MEES spectra offer more detailed features compared to traditional absorption or emission techniques.
MEES spectroscopy is remarkably sensitive and comparable only to the detection capabilities of canines for drugs and explosives. For example, MEES can target specific compounds on surfaces, achieving an LOD of 80 pg for TNT. In the gas phase its LODs reaches the PPT range.
MEES has been compared to various spectroscopies, including UV-VIS absorption, reflection and emission, Raman, FT-IR and FT-NIR. Across analyses of thin films and powders spanning numerous compounds, MEES consistently exhibited higher signal-to-noise ratios compared to other spectral methods. Moreover, MEES consistently achieved superior LODs when compared to traditional spectroscopies.
Advantages
• Enhanced spectral parameters: including improved signal-to-noise ratio, peak density, and spectral quality density.
• Applicable for materials in all phases (solid, liquid and gas)
• Short and simple sampling process
• No need in additional equipment
Applications and Opportunities
• Granted US patent
• Diverse applications across various fields, including explosives detection, drug detection, pharmaceutical analysis, forensic analysis, pesticide detection, and industrial quality control.
Business Development Contacts