Nanotechnology Mid - I, September - 2014

1.The prefix "nano" comes from a _____________
  • French word meaning billion
  • Greek word meaning dwarf
  • Spanish word meaning particle
  • Latin word meaning invisible
Answer: B
2.Identify semiconducting materials given below?
  • NiCr
  • GaAs
  • CuNi
  • FeCu
Answer: B
3.Which of the following is top-down approach?
  • Sol-gel technology
  • Lithography
  • Electrodepostion
  • Laser ablation
Answer: B
4.In ________________, a reservoir of “ink” (atoms or molecules) is stored on the top of the scanning probe tip, which is manipulated across the surface, leaving lines and patterns behind
  • X-ray lithography
  • UV lithography
  • Dip Pen Nanolithography
  • Electron beam lithography
Answer: C
5.In CVD process the chemical reactions occur at __________ phase
  • Solid
  • gas
  • liquid
  • none of the above
Answer: B
6.The idea of Scanning Probe Instruments is first developed at
  • MIT
  • University of Tokyo
  • IBM Laboratory
  • Rice University
Answer: B
7.In atomic force microscopy, ________ is used to measure the force exerted on the probe tip as it moves along the surface
  • Electronic
  • Physics
  • Chemistry
  • Physical Chemistry
Answer: A
8._________ is a technique used to analyze the composition of solid surfaces and thin films by sputtering the surface of the specimen with a focused primary ion beam and collecting and analyzing ejected secondary ions.
  • Secondary ion mass spectrometry
  • Photoelectron spectroscopy
  • Mossbauer spectroscopy
  • UV-Vis Spectroscopy
Answer: A
9.___________ is the vander Waals force between the tip and the surface
  • Scanning tunneling microscopy
  • Atomic force microscopy
  • Scanning electron microscopy
  • Tunneling electron microscopy
Answer: B
10._________ involves the measurement of kinetic energy of photoelectrons to determine the binding energy, intensity and angular distributions of these electrons and use the information obtained to examine the electronic structure of molecules.
  • Secondary ion mass spectrometry
  • Photoelectron spectroscopy
  • Mossbauer spectroscopy
  • UV-Vis Spectroscopy
Answer: B
11.Quantum dot is a _____________ dimensional material, based on their nano dimensions.
Answer: Zero
12.Motion of charge carriers under the influence of an external applied electric field produces ______________ within materials.
Answer: Electrical conduction
13.A material is _________________ if it contains a number of free charge carriers
Answer: Conductor
14.The preparation of nano structures is done by both _______________ approaches
Answer: Top-down approach and Bottom-Up approach
15.________________ is a printing method that uses chemical process to create an image.
Answer: Lithography
16.An ionized gas is considered as ________________.
Answer: Plasma
17.___________ is a process of an ordered crystalline growth of materials on a crystalline substrate.
Answer: Epitaxy
18.__________ is a wet-chemical based self-assembly process for nanomaterials formation.
Answer: Sol-Gel
19.________________ is the tunneling current between a metallic tip and a conducting surface.
Answer: Scanning Tunneling Microscopy
20._______________ law gives the angles for coherent and incoherent scattering from a crystal lattice.
Answer: Bragg's