Resistive-Based Gas Sensors Using Quantum Dots: A Review

Abstract

Quantum dots (QDs) are used progressively in sensing areas because of their special electrical properties due to their extremely small size. This paper discusses the gas sensing features of QD-based resistive sensors. Different types of pristine, doped, composite, and noble metal decorated QDs are discussed. In particular, the review focus primarily on the sensing mechanisms suggested for these gas sensors. QDs show a high sensing performance at generally low temperatures owing to their extremely small sizes, making them promising materials for the realization of reliable and high-output gas-sensing devices.

Bioelectrical Nose Platform Using Odorant-Binding Protein as a Molecular Transporter Mimicking Human Mucosa for Direct Gas Sensing

“…Recently, extensive efforts have been given to build artificial nose devices, which can mimic olfactory systems. These include nanoparticle-array devices, , field-effect transistors (FETs), − nanowire devices, surface plasmon resonance, , quantum dots, , and colorants. , Some of such artificial nose devices using olfactory receptor proteins as detection elements could mimic the responses of animal olfactory systems. , However, many of artificial nose devices operate only in liquid environments, requiring additional interface structures for gas detection. , Furthermore, since they do not have nasal mucus-like parts containing OBP, it may be very difficult to detect insoluble odorant gases.…”

“…9−12 Recently, extensive efforts have been given to build artificial nose devices, which can mimic olfactory systems. These include nanoparticle-array devices, 13,14 field-effect transistors (FETs), 15−19 nanowire devices, 20 surface plasmon resonance, 21,22 quantum dots, 23,24 and colorants. 25,26 Some of such artificial nose devices using olfactory receptor proteins as detection elements could mimic the responses of animal olfactory systems.…”

Three‐Terminal Artificial Olfactory Sensors based on Emerging Materials: Mechanism and Application

“…To realize odorant detection and recognition in different environments, various emerging gas sensory devices, including resistive, [30][31][32] optical, [33][34][35] electrochemical, [36][37][38] and FET-architectured gas sensors, have been thoroughly studied. [39][40][41] Resistive gas sensors are the most researched and marketed sensors, owing to their high sensitivity, simple fabrication approach, and outstanding stability.…”

Introductory Chapter: The Fame of Quantum Dots in Space-age Improvements for Multifunctional Application

“…• Piezoelectric energy harvester [35] Cryotechnics • Cryogenic-temperature thermodynamically Suppressed and strongly confined quantum dots [36] • SQUIDS (superconducting quantum interference devices) [37] Mechanics • Quantum-dot array with self-aligned electrodes [38] • Reversible adhesion via quantum dots [39] • Reduction of friction [40] Magnetics • Quantum-dot cellular automata [41] • Multimodal imaging [42] Sensorics • Data acquisition in antagonistic surroundings and media [43] • Telemetry monitoring via PDA [44] • Optical and electrochemical (bio)analytical sensors [45] Chemistry • Drift-diffusion [46] • Carbon dots are in contrast to corrosion inhibitors [47] • Resistive-based gas sensors [48] Biomedicine • Biocompatible implant coating [49] • Neurological sensors [50] New materials • Metastable phases/metallic glasses: Mn 2+ -doped CdS quantum dots in a silicate glass [51] Metal-doped PbSe quantum dots in silicate glasses [52] • Low-noise GaAs quantum photonics [53] • Ultra-stable carbon quantum dots [54] (Alternative) Energies…”