The double K+/Ca2+ sensor based on laser scanned silicon transducer (LSST) for multi-component analysis

Area of Science:

• Analytical Chemistry
• Materials Science
• Sensor Technology

Background:

• Simultaneous ion determination is crucial in various chemical analyses.
• Existing multi-ion sensors often face limitations in sensitivity and specificity.
• Development of integrated sensor systems is an active research area.

Purpose of the Study:

• To develop a novel double ion sensor for simultaneous K+ and Ca2+ determination.
• To utilize a laser scanned semiconductor transducer (LSST) for enhanced sensing capabilities.
• To propose a prototype for a new generation of multi-sensor systems.

Main Methods:

• Fabrication of a double ion sensor using a Si/SiO(2)/Si(3)N(4)-transducer.
• Deposition of distinct ion-sensitive membranes: valinomycin for K+ and t-HDOPP-Ca for Ca2+.
• Utilizing a laser scanned semiconductor transducer (LSST) for ion detection.

Main Results:

• The developed sensor successfully achieved simultaneous determination of K+ and Ca2+ ions.
• Achieved detection limits of 2 x 10(-6) mol L(-1) for K+ and 5 x 10(-6) mol L(-1) for Ca2+.
• The sensor demonstrated theoretical sensitivities suitable for practical applications.

Conclusions:

• A functional double ion sensor prototype based on LSST has been successfully developed.
• This sensor represents a significant advancement in multi-ion sensing technology.
• The developed system offers a promising platform for future chemical analysis applications.