Brainscape's Knowledge GenomeTM

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


See full index

Biomedical Instrumentation > Quiz 1 > Flashcards

Quiz 1 Flashcards

1
Q

What are the reasons for using nano?

A

Nanomaterials can have unique electrical, physical, and chemical properties.

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

Why are high surface area to volume ratios beneficial?

A

Nanomaterials have higher ratios, the higher the ratio the more reactive they can be.

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

What types of effects dominate on the nanoscale?

A

Quantum effects, properties can be finetuned because of this

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

Applications of nanomaterials

A

Drug design, personalized medicine, bioelectronics, fuel cells

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

What is the top down approach for forming nanomaterials?

A

Subtractive method, uses electron beam or light to carve out portions of a block

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

What are some examples of top down methods?

A

Nano-impression, Nanoimprint, Electron ligraphy, UV Photoligraphy

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

What is the bottom up approach for creating nanomaterials?

A

Starts with small materials, adds on sometimes referred to as self assembly

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

What are the two main bottom up methods?

A

Self assembly technology and natural self assembly technology

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

Why is Self assembly given its name?

A

because it is based off of biological and chemical things that can occur naturally

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

What is directed self assembly?

A

Simpler nanofabrication methods are used to grow the desired components, they can also be called directed growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Accuracy vs precision

A

Accurate is close to center, precise is close to the other shots

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

Is accuracy or precision more desired?

A

Accuracy is because a ton of trials can be used then averaged to give a good result

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

Instrument vs machine

A

Instrument is a measuring device for determining the present value of a measurement, machines perform work and change the motion of an object

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

What is a tool

A

abrade or deform the work piece or join together multiple pieces

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

What is an apparatus?

A

a construction made to support tooling of a workpiece

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

Technique compared to method?

A

A technique is a studied phenomenon that has been found to provide valuable information about a subject, specifically what a substance is made up of. This may include different types of spectroscopy methods and more. A method uses a technique under specific conditions and
parameters to solve the problem at hand

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

How is analysis different than just measuring?

A

There is a solid scientific procedure (protocol)

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

Define measuring:

A

Measuring is the systematic process of determining the attributes of an object

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

What does designing a method of analysis require?

A

Experience, broad knowledge, intuition, and problem-solving skills are needed, this will allow for valid, trustworthy information.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

When does the need for analysis arise?

A

When someone has to measure the attributes which cannot be measured with tools

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are some examples of analytical techniques?

A

IR spectroscopy, Raman spectroscopy, SEM with EDX

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Examples of analytical methods?

A

TEM, SEM

23
Q

Procedure vs Protocol

A

A procedure is a set of written instructions that is standardized for an analytical method. A protocol is similar except it is more strict and has more specific guidelines that need to be followed, these might be mandated by an organization like the EPA. A protocol may include steps for calibrating a machine to ensure the desired type of results.

24
Q

Possible questions for determining the problem?

A

What degree of accuracy and precision is needed for the application?

What is the nature and background of the problem?

How soon does the work need to be done?

25
Q

Analysis steps flow chart (8 things after analyst and collaborator)

A
  1. Define Problem
  2. Modelling, method, and plan
  3. obtain and store sample
  4. Sample preparation
  5. Perform measurements
  6. Compare Results with Standards
  7. Data Refinement and Statistical Treatment
  8. Presentation of results
26
Q

What is an important step before measuring the sample?

A

Using a blank sample

27
Q

How can systematic errors be found?

A

Using different analytical methods or different analysts and instruments using the same analytical method.

Use of Certified Reference Material can be used (SRM) which is available at NIST

28
Q

What do statistical error bars show?

A

Precision in the results

29
Q

What is the role of an instrument?

A

To obtain reliable information about the sample, physical or chemical information must be transformed into meaningful data

30
Q

What factors may be necessary to accomplish the measurement?

A

Instrument in use, quality of data, and the required data quality

31
Q

Signal to output flow:

A

signal generator, input transducer, signal modification, and output transducer.

32
Q

What are the main carbon nanoparticles?

A

Graphene (with variations), carbon nanotubes (with variations), and graphene quantum dots

33
Q

What do CNT’s allow you to do

A

Create semiconductive to semiconductive or semiconductive to metal junctions for electronic devices

34
Q

What qualities are useful for structural applications in CNT’s

A

High tensile strength, youngs modulus, and other mechanical properties

35
Q

What is another nanoelectric device material?

A

Silicon

36
Q

What hybridization does Graphite have?

A

sp2

37
Q

Graphene is made up of what type of rings?

A

Benzene

38
Q

What is the equation for finding the number of units n and m

A

nx+my

39
Q

n=m

A

metallic, arm chair

40
Q

n-m=3(x)

A

zig zag or chiral, metallic

41
Q

What is nanofabrication:

A

Fabrication of nanostructures with at least one lateral dimension between the size of an individual atom and 100 nm

42
Q

What does it mean for a carbon nanotube to be called functional?

A

They are actively involved in the operation of the device

43
Q

What are some alternative functional materials for FET’s?

A

Polystyrene, PTBS, PMMA, PVP

44
Q

What do dielectrics not do?

A

Carry current

45
Q

What specifies a quantum dot?

A

Any material with a diameter comparable to the wavelength of an electron is a quantum dot

46
Q

What is a nanowire?

A

Solid material with a dimension less than 100 nm diameter

47
Q

What mechanical properties are useful?

A

Small structures can be free of defects, increasing strength

48
Q

What thermal properties are useful?

A

They can conduct heat better than the same material in bulk.

49
Q

What Chemical properties are useful?

A

Solvent accessible surface area as well as ease of functionalization

50
Q

What electronic properties are useful?

A

the small size of the conductors allows them to move electrons ballistically

51
Q

What optical properties are useful?

A

They can be tuned for detection purposes

52
Q

Applications of nanomaterials:

A

Quantum dots: fluorescent markers

Nanotubes: structural reinforcement

Nanowires and nanotubes: electronics

All three for high surface area sensors

53
Q

What are the two areas of nanotechnology?

A

Wet and dry

Wet: Dendritic nanostructures

Dry: has increased strength of materials, more conductivity

54
Q

What are some applications of Dendrimers?

A

Targeted drug delivery
MRI contrast agents
Antiviral agents

Biomedical Instrumentation (3 decks)

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