Nanotechnology involves the engineering, manipulation, and characterization of matter at the nanoscale, typically between 1 and 100 nanometres, where quantum mechanical effects predominate over classical bulk phenomena. The conceptual origin dates to Richard Feynman's 1959 Caltech lecture, 'There's Plenty of Room at the Bottom', while the term was formally introduced by Norio Taniguchi in 1974. Practical atomic manipulation accelerated following the invention of the Scanning Tunneling Microscope by Gerd Binnig and Heinrich Rohrer in 1981 at IBM Zurich. In 1991, Japanese physicist Sumio Iijima characterized Carbon Nanotubes (CNTs) using transmission electron microscopy. Structurally, CNTs represent cylindrical allotropes of carbon featuring sp2 hybridization, organized as Single-Walled Carbon Nanotubes (SWCNTs) with diameters from 0.4 to 2 nanometres or Multi-Walled Carbon Nanotubes (MWCNTs) with nested concentric graphene cylinders. Possessing tensile strengths exceeding 60 gigapascals, an elastic modulus near 1 terapascal, and thermal conductivity approaching 3500 watts per metre-kelvin, carbon nanotubes exhibit exceptional ballistic electron transport. These physicochemical parameters enable transformative industrial applications spanning structural nanocomposites, lithium-ion battery electrodes, biosensors, nanoelectronics, and targeted pharmacological drug delivery vectors.
High-yield conceptual summaries for competitive exams and rapid revision.
Nanotechnology operates within the scale of 1 to 100 nanometres, where quantum confinement and surface area-to-volume effects dominate materials behavior.
Richard Feynman outlined the conceptual basis of nanotechnology in his December 1959 address titled 'There's Plenty of Room at the Bottom'.
The term 'nanotechnology' was coined in 1974 by Japanese researcher Norio Taniguchi of the Tokyo Science University.
Gerd Binnig and Heinrich Rohrer invented the Scanning Tunneling Microscope (STM) in 1981, earning the 1986 Nobel Prize in Physics.
Gerd Binnig, Calvin Quate, and Christoph Gerber invented the Atomic Force Microscope (AFM) in 1986 to image non-conductive nanoscale surfaces.
Sumio Iijima of NEC Corporation reported the direct observation of multi-walled carbon nanotubes in Nature in 1991 using high-resolution TEM.
Carbon nanotubes are allotropes of carbon configured as tubular cylinders of rolled-up graphene sheets with sp2 covalent hybridization.
Single-Walled Carbon Nanotubes (SWCNTs) consist of a single cylindrical graphene layer with typical outer diameters ranging from 0.4 to 2 nanometres.
Multi-Walled Carbon Nanotubes (MWCNTs) comprise multiple concentric graphene cylinders separated by an interlayer spacing of approximately 0.34 nanometres.
The electronic properties of carbon nanotubes depend on their chiral vector (n, m), exhibiting metallic conduction when (n - m) is a multiple of 3, and semiconducting behavior otherwise.
Carbon nanotubes possess tensile strengths up to 60 to 100 gigapascals, roughly 100 times higher than structural steel at one-sixth the density.
The axial Young's modulus of carbon nanotubes approaches 1 terapascal (1000 GPa), making them among the stiffest known synthetic materials.
CNTs exhibit ballistic electron transport over sub-micrometer lengths due to minimal electron-phonon scattering along the seamless graphene lattice.
Fullerenes (C60 or 'buckyballs') were discovered in 1985 by Harold Kroto, Robert Curl, and Richard Smalley, earning the 1996 Nobel Prize in Chemistry.
The Government of India launched the Nano Mission (Mission on Nano Science and Technology) in 2007 under the Department of Science and Technology.
What is the standard metric measurement scale for "Nanotechnology", where 1 nanometer (nm) equals what fraction of a meter?
Verified Explanation
Nanotechnology operates at the nanoscale (1 to 100 nm), where quantum mechanical surface-area-to-volume effects dominate material properties.
2ID: GK-SCIT-00303
easyNanotechnology & Materials Science
What characteristic dimensional scale defines nanoscale materials and structures in nanotechnology?
Verified Explanation
Nanotechnology is defined as the understanding and control of matter at dimensions between approximately 1 and 100 nanometers (1 nm = 10^-9 m), where novel quantum phenomena emerge.
3ID: GK-SCIT-00479
easyNanotechnology & Materials Science
What is the typical dimensional scale defining nanomaterials in scientific nanotechnology?
Verified Explanation
By international convention (ISO/TS 80004), nanotechnology refers to the manipulation of matter with at least one external dimension or internal structure sized between approximately 1 and 100 nanometres.
4ID: GK-SCIT-00003
easyNanotechnology & Materials Science
What unit of length corresponds to one-billionth of a meter (10^-9 m) in nanotechnology?
Verified Explanation
Nanotechnology operates on the nanoscale, typically between 1 and 100 nanometers.
5ID: GK-SCIT-00418
easyNanotechnology & Materials Science
What is the typical spatial dimension range defined internationally for nanoscale structures in nanotechnology?
Verified Explanation
Nanotechnology is formally defined by ISO and the National Nanotechnology Initiative as the manipulation of matter with at least one dimension sized between 1 and 100 nanometres.
6ID: GK-SCIT-00686
mediumNanotechnology & Advanced Materials
In 1974, Japanese researcher Norio Taniguchi first coined the term 'nanotechnology' to define which engineering concept?
Verified Explanation
Professor Norio Taniguchi of Tokyo University of Science coined the term 'nanotechnology' in his 1974 conference paper to describe ultra-precision machining processes that manipulate matter at tolerances below one micrometer down to atomic and molecular dimensions (0.1 to 100 nm).
7ID: GK-SCIT-00038
mediumNanotechnology & Materials Science
What is 'Carbon Nanotube' (CNT) in nanotechnology?
Verified Explanation
Discovered by Sumio Iijima in 1991, single-walled (SWCNT) and multi-walled CNTs are used in lightweight composites and electronics.
8ID: GK-SCIT-00700
mediumNanotechnology & Advanced Materials
In biomedical nanotechnology, core-shell nanoparticles designed with a magnetite (Fe3O4) core and an outer mesoporous silica shell are engineered to deliver which combined therapeutic functionality?
Verified Explanation
Core-shell Fe3O4@SiO2 nanoparticles combine superparamagnetic iron oxide cores for T2-weighted MRI contrast and alternating magnetic field-induced localized hyperthermia with porous biocompatible silica shells that encapsulate chemotherapeutic drugs for targeted release.
9ID: GK-SCIT-00203
easyNanotechnology & Materials Science
In materials science and physics, the nanoscale is standardly defined as spanning which dimensional range?
Verified Explanation
Nanotechnology standardly encompasses structures and materials with at least one dimension spanning approximately 1 to 100 nanometres (1 nm = 10^-9 m).
10ID: GK-SCIT-00533
easyNanotechnology & Materials Science
A nanometer is defined as what fraction of a standard meter?
Verified Explanation
One nanometer (nm) equals 10⁻⁹ meters (one-billionth of a meter), the scale at which nanotechnology manipulates matter.