Viewpoints

About This Technology

This Technology Map defines nanoelectronics as the ability to manipulate matter on a scale of less than 100 nanometers to create structures with useful electronic properties (1 nanometer is one-billionth of a meter). Decreasing dimensions in electronic devices has a long history of delivering cost and performance improvements. As the scale decreases to the nano level, new often-enhanced material properties arise because of quantum-size effects, interface phenomena, and very high surface-to-volume ratios. New nanoscale materials such as carbon nanotubes and graphene have properties that do not exist at more macroscale levels. However, the top-down manufacturing processes of the semiconductor industry are only one option for producing nanoscale devices and indeed will be too expensive for many applications. Nanoparticle formation, nanoimprinting, wet processing, and molecular self-assembly are some of the other processes that can create novel nanoelectronic materials and structures.

Commercialization of nanoelectronics first began with one-dimensional nanostructures—in the form of quantum-well lasers—in the 1980s, and such devices are now widespread in DVD players and telecommunications equipment. Nanoparticle antistatic and antireflection coatings are already available, and even conventional integrated circuits involve sub-100-nanometer feature sizes. The first wave of commercial devices to harness novel nanoscale properties includes hybrid devices such as sensors that use nanoparticles as one element in the active region, ultrasensitive magnetic heads for disk-drive storage, and solar cells in which nanoparticles can separate light-induced electronic charge. The minute sizes of quasi–naturally occurring carbon nanotubes can provide the basis of new nanomemory, field-emission displays, and electrodes for batteries and ultracapacitors.

Nanoelectronics will have an impact on almost every industry, because electronics itself is ubiquitous. However, though information-technology and consumer-electronics industries have felt the early impact through enhanced memory storage, new nanodevices are beginning to have an impact across a wide number of industries, including biomedicine, energy and lighting. New printed solar cells could alter radically the economics of this form of renewable energy; enhanced batteries may drive future hybrid electric vehicles; new nanocrystals could tailor the output of white LEDs, dramatically reducing the consumption of electricity in lighting. Several wild cards exist in the longer term: Futurists envision a world in which nanotechnology creates minute machines that, working in parallel, create micro and macro devices. Molecular- and DNA-computing concepts could enable processing and memory-building blocks beyond the limits imaginable today. Consideration of the near-term potential of nanoelectronics requires a realistic assessment of this technology, given its considerable immaturity, the need for practical production techniques, and the existence of many incumbent and competing technologies.