Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microscopy > Group questions for final > Flashcards

Group questions for final Flashcards

1
Q

List 3 uses of Electron Back scatter Diffraction (EBSD)

A
  • grain size
  • crystal orientation
  • global and local texture
  • substructure analysis
  • strain analysis
  • phase identification
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What type of materials will not produce patters forElectron Back scatter Diffraction (EBSD)

A

Amorphous materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

List 2 properties that Electron Back scatter diffraction (EBSD) software record during analysis

A
  • The phase
  • XY position
  • orientation
  • goodness of fit
  • pattern quality
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Phase distribution map reveals the presence of hard and brittle inter-metallic phases called?

A
  • Sigma

- Chi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Who was the scientist that created the glow discharge tube in 1968?

A

Werner Grimm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What type of analysis is the glow discharge optical emission spectroscopy (GDOES) most useful for?

A

Determining elemental composition, layer thickness, and layer structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What types of materials can the Glow discharge analyze?

A

Metal alloy coatings, semiconductors, polymer coatings, and glass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which type of gas does the glow discharge utilize when testing?

A

argon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the lasers used in photo-thermal spectroscopy

A

There are 2, the pump laser and the probe laser

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name 2 applications of Photo-thermal spectroscopy

A
  • Thermal blooming of homogeneous gases and liquids
  • analysis of layered materials
  • detection of single nanoparticles
  • measure thermal properties of solids and layered materials
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which two types of interfering fields are collected on fast photodiodes in photothermal microscopy?

A

Backward and forward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the probing beam do in photothermal microscopy?

A

detects and measures the local refractive index changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What allows the sample to be moved continuously through the laser?

A

A Feedback Loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the benefit of single particle tracking?

A

Live tracking of molecule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are two examples of applications of Ion Scattering Spectroscopy?

A

a. Microelectronics
b. Study of crystal growth
c. Study of oxidation
d. Sample characterization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How are scattered ions measured in order to determine the element in the sample

A

Kinetic energy of the ion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In Ion Scattering Spectroscopy, what level of vacuum is the sample held at?

A

ultra high vacuum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What type of atoms create the larger peaks in a spectrum when using Ion Scattering Spectroscopy?

A

Larger atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

XRF works by removing what from the inner orbital shell of an atom

A

Electron

20
Q

Name 3 applications for XRF

A

Geology, medicine, environmental analysis, mining and ore processing

21
Q

When was XRF first used

A

1928 by Glocker and Schreiber

22
Q

Two categories of XRF

A

Energy Dispersive and Wavelength Dispersive

23
Q

What is the purpose for having the field reduction factor for Field Ion Microscopy?

A

to take into account the geometry and electrostatic environment of each tip

24
Q

Why must some imaging gas be present in Field Ion Microscopy?

A

So that there is a medium to be ionized

25
Q

What defects can be seen using Field Ion Microscopy?

A

vacancies, dislocations and grain boundaries

26
Q

For Analyzing alloys using Field Ion Microscopy what do the differences in colors represent?

A

Different phases in the sample.

27
Q

What is a particle accelerator called in small-angle X-ray scattering

A

Synchroton

28
Q

How many dimensions is the initial data collected in for small angle x-ray scattering

A

2 dimensions

29
Q

What are the two main categories of SAXS instruments?

A

Point-collimation and line-collimation

30
Q

What is the main complication in the process of SAXS?

A

Separating the main beam from the weaker scattered x-rays

31
Q

What is the other name for particle-induced x-ray emission?

A

Proton-induced x-ray emission

32
Q

How is the heat from a proton beam displaced? (particle induced xray)

A

By running a helium purge

33
Q

What form is data given? (particle induced xray)

A

Peaks

34
Q

Name two applications of PIXS (particle induced x ray)

A
  • Art
  • biology
  • materials science
  • environmental pollution
  • bones
  • ancient texts
  • ancient tools
  • paintings
  • pottery
  • jewels
35
Q

when was the effect of auger electron spectroscopy observed?

A

Mid 1920’s

36
Q

Name two main uses of AES

A
  • Analyze grain boundaries in metals and ceramics
  • Study film growth and surface-chemical composition
  • Quality control surface analyses in integrated circuits (fast collection times), - Areas that require high spatial resolution
  • Depth profiling
37
Q

What are the two types of interactions?

A

Elastic and Inelastic scattering

38
Q

The Auger energies fall between what two electron energies?

A

Secondary and backscattered

39
Q

Who were the two scientists that Ernest Rutherford supervised and what where they studying?

A

Hans Geiger and Ernest Marsden, they were studying the scattering of alpha particles through metal foils

40
Q

What is the difference between Rutherford’s model of the atom and Rutherford-Bohr model?

A

The Rutherford model did not consider the different electron shells. Niels Bohr improved the Rutherford model through quantum mechanics to show there were different electron shells

41
Q

What are the three components for the apparatus?

A

An ion source (usually He¬+), a linear particle accelerator, and a detector

42
Q

What are two applications for using RBS?

A

Composition of a sample, contamination levels, depth of an element for multilayered samples

43
Q

What are the two main types of Confocal microscopes?

A

laser scanning microscopy (CLSM) and tandem scanning microscopes (CTSM)

44
Q

What is the main difference between conventional fluorescence microscopes and Confocal microscopes?

A

Uses point illumination and pinhole to eliminate out-of-focus signal

45
Q

What are the sensitive detectors that can be used in the confocal microscope

A

Photomultiplier tube or avalanche photodiode

46
Q

What are 3 applications for the confocal microscope?

A
  • Stem cell research -Photobleaching studies
  • Fluorescence resonance energy transfer (FRET)
  • Limetime imaging
  • Multiphoton microscopy
  • DNA hybridization
  • Membrane and ion probes
  • Bioluminescent proteins
  • Epitope tagging

Microscopy (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions