nanowhisker

A nanowhisker, more accurately termed a nanowire, is a one-dimensional nanostructure with a diameter of 100 nanometers or less. These extremely thin wires possess unique electrical, optical, magnetic, and mechanical properties due to their high length-to-diameter ratio and quantum mechanical effects.1

Nanowires can be fabricated from various materials, including silicon, carbon, and metals like gold and copper. Their high surface-to-volume ratio enhances chemical reactivity, making them suitable for sensors. They also exhibit tunable conductivity and large optical output, with metallic nanowires enabling ballistic electron transport for improved computer speeds.1

Applications for nanowires span optoelectronics, photovoltaics, biotechnology, and electronics. They are being explored to create smaller transistors, transparent electrodes for displays, and efficient photovoltaic devices. In biotechnology, nanowires are used in biomedical sensors and for creating artificial protein-coding DNA. Nanotechnology, the broader field of manipulating matter at the atomic scale, encompasses nanowires and holds potential for lighter, stronger materials, improved energy efficiency, and advanced sensors.12