Search results for "nanosensor"
showing 3 items of 33 documents
Fluorescent Boron Oxide Nanodisks as Biocompatible Multi-messenger Sensors for Ultrasensitive Ni$^{2+}$ Detection
2023
Boron-based nanocomposites are very promising for a wide range of technological applications, spanning from microelectronics to nanomedicine. A large variety of B-based nanomaterials has been already observed, such as borospherene, B nanotubes and nanoparticles, and boron nitride nanoparticles. However, their fabrication usually involves toxic precursors or leads to very low yields or small boron atom concentration. In this work, we report the synthesis of nanometric B$_{2}$O$_{3}$ nanodisks, a family of nanomaterials with a quasi-2D morphology capable of intense fluorescence in the visible range. Such as boron-based nanomaterial, which we synthesized by pulsed laser ablation of a boron tar…
Fluorescent Biosensors Based on Silicon Nanowires
2021
Nanostructures are arising as novel biosensing platforms promising to surpass current performance in terms of sensitivity, selectivity, and affordability of standard approaches. However, for several nanosensors, the material and synthesis used make the industrial transfer of such technologies complex. Silicon nanowires (NWs) are compatible with Si-based flat architecture fabrication and arise as a hopeful solution to couple their interesting physical properties and surface-to-volume ratio to an easy commercial transfer. Among all the transduction methods, fluorescent probes and sensors emerge as some of the most used approaches thanks to their easy data interpretation, measure affordability…
Elektroniskā deguna izmantošana smaku piesārņojuma noteikšanā
2015
Maģistra darbā pētītas un analizētas iespējas kvalitatīvi un kvantitatīvi identificēt smaku piesārņojumu ar alvas oksīda nanosensoru, kurš izmantots kā galvenais elements elektroniskajā degunā. Sensora testēšana veikta dažādu saimniecisku aktivitāšu vidēs - Rīgas Brīvostas uzņēmumu apkārtnē, Rīgas centrā pie monitoringa stacijām Brīvības ielā un Krišjāņa Valdemāra ielā, dzīvnieku fermās, siera ražošanas uzņēmumā, iekštelpās un relatīvi nepiesārņotā vidē (Kuldīgā). Mērījumu signālu apstrāde veikta dažādiem darbības režīmiem (spriegumiem), datu statistiskā apstrādē iekļauti ietekmējošie meteoroloģiskie parametri. Darbā analizēta smakojošo vielu (benzola, toluola, p-ksilola, formaldehīda) konc…