Metal oxide nano-crystals for gas sensing

Strain specificity in antimicrobial activity of silver and copper nanoparticles

“…Metal nanoparticles may be combined with polymers to form composites for better utilization of their antimicrobial activity. Metal nanoparticles are also finding application in various other fields, i.e., catalysis and sensors [7][8][9]. However, it is also recognized that nanoparticles may have many undesirable and unforeseen effects on the environment and in the ecosystem [10,11].…”

Fabrication of Pd Doped WO3 Nanofiber as Hydrogen Sensor

“…Reports of various technologies for hydrogen sensing include FETs [1,2], optical fibers [3,4], thermoelectric [5,6], Schottky diodes [7][8][9], surface acoustic wave devices [10,11] and metal oxides [12][13][14][15][16][17]. Metal oxide sensors are under intensive development and have been studied for decades [18,19].…”

Synthesis of Star-Shaped Lead Sulfide (PbS) Nanomaterials and theirs Gas-Sensing Properties

“…Among them, chemiresistive gas sensors based on semiconductor have been subjected to extensive research and development due to their advantageous features such as low cost, high sensitivity, fast response/ recovery time, and simplicity in device structure and circuitry 6 . With the fast development of nanotechnology, many nanosized semiconductors, including SnO 2 , ZnO, ZnS, WO 3 , TiO 2 etc., have been fabricated and employed as gas sensors 7 . Lead sulfide (PbS) is an important IV-VI semiconductor with a narrow band gap energy (0.41eV) and large excition Bohr radius (18 nm), And it has been widely studied in many fields, such as solar cells, IR photodetectors and display devices etc.…”