The article describes preparation and characterization of a silicon surface modified by different self- assembled aminopropylsilanes with the purpose of using them in sensor applications. Single-crystal silicon wafers (111) were modified with aminosilanes that have different numbers of bonding sites: 3-aminopropyltrimethoxysilane (APTMS), 3-aminopropyl diethoxymethyl silane (APRDMS) and 3-aminopropylethoxydimethylsilane (APREMS). We deposited the self-assembled layers from a solution of aminosilanes in toluene under various reaction conditions. The surface composition and the chemical bonding were determined using X-ray photoelectron spectroscopy.
COBISS.SI-ID: 36892165
The article presents low noise integrated signal processing electronics for miniature system, which can detect and selectively recognize vapor traces of different materials, and is based on surface-functionalized COMB capacitive sensors and extremely low noise analog and digital integrated electronic circuit. The instrument is sensitive and selective, consumes minimum amount of energy, is very small and cheap to produce in large quantities, and is insensitive to mechanical influences. It is possible to detect less than 3ppt of TNT molecules in the atmosphere (3 TNT molecules in 10+12 molecules of N2) at 25 oC in 1 Hz bandwidth using very small volume and approx. 10 mA current from 5V supply voltage.
COBISS.SI-ID: 10372692
High level system simulations of optical systems are mandatory for successful validations of high dynamic range optical systems. For this reason it is essential that a top-down approach is used. System level modeling and simulations are the key processes for achieving desired characteristics of such systems and shorten the design time. This paper focuses on the preparation of a model for a photodiode pair, which will be the input for the ADC of the optical system
COBISS.SI-ID: 10164564