What is the use of nanowire?

Nanowires are extensively used in nanoelectronic devices as connectors for the transportation of electrons. Cobalt, copper, silicon, and gold have been utilized to make nanowires. Chemical vapor deposition is used for the production of nanowires (Njuguna et al., 2014).

What is meant by nanowire?

nanowire, thin wire, generally having a diameter less than or equal to 100 nanometers (1 nm = 1 × 10−9 metre). The first nanoscale quantum-well wire (a thinly layered semiconductor structure) was developed in 1987 by scientists at Bell Laboratories.

How thick is a nanowire?

A nanowire is a nanostructure, with the diameter of the order of a nanometer (10−9 m). Nanowires generally have a thickness or diameter of tens of nanometers or less and a variable length.

What type of nanowires exist?

Many different types of nanowires exist, including metallic (e.g., Ni, Pt, Au), semiconducting (e.g., InP, Si, GaN, etc.), and insulating (e.g., SiO2,TiO2). Molecular nanowires are composed of repeating molecular units either organic or inorganic.

Are nanowires thin?

Nanowires generally have a thickness or diameter of tens of nanometers or less and a variable length.

What types of nanowires exist?

Many different types of nanowires exist, including superconducting (e.g. YBCO), metallic (e.g. Ni, Pt, Au, Ag), semiconducting (e.g. silicon nanowires (SiNWs), InP, GaN) and insulating (e.g. SiO2, TiO2).

What is the other term for nanowires?

Nanowires generally have a thickness or diameter of tens of nanometers or less and a variable length. At the nanowire scale, quantum mechanical effects are significant to the extent that nanowires are sometimes called ‘quantum wires’.

What is the most common method for nanowire growth?

The anisotropic growth of nanowires is frequently accomplished using nanoparticle catalysts and gas-phase precursors. One of the most common methods is vapor-liquid-solid (VLS) growth, wherein gaseous precursors of the desired nanowire material, such as SiCl4 (215120) for silicon, dissolve into a liquid-metal catalyst.

What are the properties of nanowires?

Nanowires also exhibit interesting chemical properties mainly because of their enhanced surface to volume ratio, high aspect ratio, large curvature at the nanowire tips and huge number of surface atoms.

Who first used the term nanotechnology and when?

After fifteen years, Norio Taniguchi, a Japanese scientist was the first to use and define the term “nanotechnology” in 1974 as: “nanotechnology mainly consists of the processing of separation, consolidation, and deformation of materials by one atom or one molecule” [6].

What is nanowire growth?

Nanowire growth is thus achieved via the transfer of the semiconductor material from the vapor source at the vapor/liquid interface into the eutectic, followed by continued solid addition at the liquid/solid interface.

What is a silicon nanowire?

Silicon nanowires, also referred to as SiNWs, are a type of semiconductor nanowire most often formed from a silicon precursor by etching of a solid or through catalyzed growth from a vapor or liquid phase. Such nanowires have promising applications in lithium ion batteries, thermoelectrics and sensors.

What is a nanowire in physics?

Nanowire. A nanowire is a nanostructure, with the diameter of the order of a nanometer (10 −9 meters). It can also be defined as the ratio of the length to width being greater than 1000. Alternatively, nanowires can be defined as structures that have a thickness or diameter constrained to tens of nanometers or less and an unconstrained length.

How are nanowires manufactured?

Nanowire production uses several common laboratory techniques, including suspension, electrochemical deposition, vapor deposition, and VLS growth. Ion track technology enables growing homogeneous and segmented nanowires down to 8 nm diameter.

Can nanowire solar cells improve the efficiency of SiNW solar cells?

Recent experiment on nanowire solar cells has led to a remarkable improvement of the power conversion efficiency of SiNW solar cells from <1% to >17% in the last few years.