Gas sensors based on the oxide skin of liquid indium

Abstract

Various non-stratified two-dimensional (2D) materials can be obtained from liquid metal surfaces that are not naturally accessible. Homogenous nucleation on atomically flat interfaces of liquid metals with air produces unprecedented...

Piezoelectric Applications of Low-Dimensional Composites and Porous Materials

“…Laser interferometry, a high-resolution technique, measures the displacement of a piezoelectric material's surface under applied voltage [4,13,20]. Although sensitive, it is costly and susceptible to external vibrations.…”

“…Numerous review articles have extensively addressed the inherent characteristics of untouched piezoelectric materials, as well as exploring energy harvesting and flexible devices [4,[13][14][15]. Nevertheless, there is a notable scarcity of systematic reviews on the piezoengineering of LD-based composite and porous materials.…”

Control of Oxygen Vacancies of 2D-InOx Fabricated by Liquid Metal Printing via Temperature Modulation

“…Liquid metal printing (LMP) has emerged as a revolutionary technique in the realm of 2D metal oxide fabrication, capturing considerable attention in recent years. This pioneering approach seamlessly combines the adaptability of nontoxic liquid metal with the capacity to fabricate self-limited and atomically thin layers metal oxide layers, such as Ga 2 O 3 , , SnO 2 , , In 2 O 3 , − etc., thereby opening up a realm of unprecedented possibilities across diverse domains, including electronics, photodetectors, catalysis, gas sensing, , and so on. However, conventional methods employed in the fabrication of 2D metal oxides, such as chemical vapor deposition (CVD) or atomic layer deposition (ALD), often demand complex and expensive equipment, along with stringent processing conditions.…”

Thickness-Dependent Room-Temperature Optoelectronic Gas Sensing Performances of 2D Nonlayered Indium Oxide Crystals from a Liquid Metal Printing Process

“…In 2 O 3 is an intrinsic nonlayered n-type metallic oxide with a wide band gap (2.9–3.7 eV), good thermal stability, and remarkable electronic properties, which has been already well-known for gas sensing application. − For example, Ali Zavabeti et al have produced atomically thin In 2 O 3 with a thickness of 2 nm. The response of the gas sensor based on atomically thin In 2 O 3 is exceptionally high, reaching 1974% at 200 °C to 10 ppm of NO 2 .…”