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science atechnolgy and societ > nanotech > Flashcards

nanotech Flashcards

1
Q

Is actually a term that we used because of its size

A

nanotechcnology

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2
Q

A technological advancement / scientific breakthrough that is making use of matters or different materials at a very small scale – at nano level

A

nanotechnology

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3
Q

The idea of manipulating and controlling things on an extremely small scale

A

nanotechnology

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4
Q

Understanding and control of matter at dimensions between approximately 1 and 100
nanometers (according Nanotechnology Initiative)
National

A

nanotechnology

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5
Q

Study of phenomena and fine-tuning of materials at atomic, molecular, and macromolecular scales; properties differ from those at a larger scale (according to the European Commission)

A

nanotechnology

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6
Q

Technology working with and producing things at atomic leve

A

nanotechnology

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7
Q

what do nanotechnologists use to design new materials that have improved or new properties

A

atoms and molecules

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8
Q

key ideas of nanotech

A

size matters
nanomaterials possess unique properties

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9
Q

▪ Structures exist at a nanoscopic scale

▪ Have dimensions between 1 to 100 nanometers

▪ Can be identified as particles, tubes, wires, films, flakes, or shells

A

size matters

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10
Q

▪ Properties of materials at nano level differ from properties of materials in bulk forms

A

true

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11
Q

▪ Nanomaterials have greater surface area, resulting to increased chemical reactivity

A

true

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12
Q

Decreasing size of particles is related to changes in particle’s magnetic, optical, and electrical properties

A

true

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13
Q

▪ Possess special size- dependent properties such as: color, fluorescence, melting
point, and chemical reactivity which can be used for plenty of purposes

A

true

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14
Q

benefits of nanotech

A

medicine
environemnt
food
electronics
energy

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15
Q

medicine (benefit) nanotech

A

lab on a chip
single walled carbon nanotubes

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16
Q
  • Made up of a clear silicone microfluidic chamber
  • Developed by researchers at the Stanford University School of Medicine
A

lab-on-achip

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17
Q

Provide faster, cheaper, and far more accurate results than any other available diagnostic equipment

A

lab on a chip

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18
Q

Has developed and can have promising contributions in diagnostics, drug delivery, molecular imaging, and tissue welding among others

A

lab on a chip

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19
Q

Dr. Robert Haddon

A

single walled carbon nanotubes

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20
Q

Used this as a material scaffolding to hold up regenerating bone

A

single walled carbon nanotubes

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21
Q

Could lead to:
o Improved flexibility and strength of artificial bone
o New types of bone grafts
o Advanced treatment methods for osteoporosis

A

single-walled carbon nanotubes

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22
Q

in environment benefits nanotech

A

ferroxane membraane
silver nanoclusters

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23
Q
  • Generated from iron oxide nanoparticles by Center for Biological and Environmental Nanotechnology (CBEN)
  • Can be used as waste treatment and water purification
A

Ferroxane Membrane

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24
Q

Catalysts that can significantly reduce the polluting by-products generated in the production of paints, household detergents, and automotive brake fluids

A

silver nanoclusters

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25
Q

in food industry nanotech benefits

A

nano composites

26
Q

Heterogenous materials comprising multiple different phase domains

 Exhibit  good  gas  –    barrier  properties  against visible and UV light
A

nano composites

27
Q

in electronics beneftis of nanotech

A

organic light-emitting diodes (OLED)

Magnetic random access memory

silver nanoparticlee ink

28
Q

Brighter, thinner, lighter, flexible, easier to produce, can be made to larger sizes and consume much less power

A

organic light-emitting diode (OLED)

29
Q

Able to ‘boot’ almost instantly, can quickly and effectively save data during a system shutdown

A

magnetic random access memory

30
Q

forming conductive lines, and print prototype circuit boards

A

silver nanoparticle ink

31
Q

in energy nanotech benefits

A

nanotech is key to achieving a sustaibanle energy future

nano optimized lithium-ion batteries

dye sensitized solar cells (DSSC) or gratzel cells

Nanoscale carbon black

32
Q
  • Improved storage capacity
  • Increased lifespan and find use in electric vehicles
A

nano optimized lithium-ion batteries

33
Q
  • Photovoltaic cells that convert any visible light into electrical energy
  • Make use of sensitizers with a broad absorption band coupled with nanocrystalline titanium oxide
  • Imitate the process of photosynthesis in green plants
A

dye senstized solar cells (DSSCC) or gratzel cells

34
Q
  • added to modern automobile tires as reinforcing filler
  • increases tire strength and longevity
  • reduce rolling resistance which leads to fuel savings up to 10%
A

nanoscale carbon black

35
Q

nanotech risks

A

toxicity

36
Q
  • Causes significant damage to the human body and environment
  • Increased chemical activity because of greater surface area than bulk particles
A

toxicity

37
Q

risks problems and considerations nanotech

A

chemical structure
nanopartcile analysis method
full-risk safety assessment on human health and environment
life cycle risk assessment
good experimental design in manufacturing

38
Q
  • Determines toxicity of nanomaterial
  • Minor changes in chemical structure could heavily change its properties

(Risk………nanotech)

A

chemical structure

39
Q

lack of information and methods that identify nanomaterials

(risk…..nanotech)

A

nanoparticle analysis method

40
Q

Exposure risk, probability of exposure, toxicological analysis, transport risk, transformation risk, ability to recycle

(risk—-nanotech)

A

full-risk safety assessment on human health and environment

41
Q

used to predict environmental impact

(risk…nanotech)

A

life cycle risk assessment

42
Q

reduce the production of material waste

(risk….nanotech)

A

good experimental design in manufacturing

43
Q

Used for energy storage, sports equipment, automotive parts, water filters, thin film electronics, etc.

A

carbon nanotubes (CNts)

44
Q

Toxicity similar to asbestos fiber (inhalation can lead to asbestosis, lung cancer, malignant mesothelioma

A

carbon nanotubes (CNTs)

45
Q

More toxic than carbon black and quartz once in the lungs

A

carbon nanotubes (CNTs)

46
Q

other risks concrn of nanotech

A

mobility
solubility
disposal of nanoparticles

47
Q

may be emitted directly to air from source

(other risks nanotech)

A

mobility

48
Q

many are soluble to water and are difficult to separate if inappropriately handled

(other risks nanotech)

A

solubility

49
Q

Ethical and Societal Concerns about
Nanotechnology (3)

A

Issues on:
1. Intellectual Property/Secrecy
2. Legitimacy of scientific results
3. Privacy Issues

50
Q

Four Challenges in Dealing with the Development, Impact, and Effect of Nanotechnology

A
  1. the callengese of technological development
  2. the challenges of technological foresight
  3. the challenges of credibility and understanding
  4. the challenges of formulating public policy
51
Q

control over the structure

Four Challenges in Dealing with the Development, Impact, and Effect of Nanotechnology

A

the challenges of technological development

52
Q

sense of the lower bound of future possibilities

Four Challenges in Dealing with the Development, Impact, and Effect of Nanotechnology

A

the challenges of technological foresight

53
Q

clearer understanding of what these technological possibilities

Four Challenges in Dealing with the Development, Impact, and Effect of Nanotechnology

A

the challenges of credibility and understanding

54
Q

formulating policies based on understanding

Four Challenges in Dealing with the Development, Impact, and Effect of Nanotechnology

A

the challenges of formulating public policy

55
Q

Methods to address the negative implications of nanotechnology (2)

A

international council on nanotechnology (ICON)

National Nanotechnology initiative (NNI)

56
Q

Established at Rice University in Houston, Texas in 2004

Worked with the academe industry, government, and NGOs

A

International council on nanotechnology (ICON)

57
Q

To develop and communicate information regarding the potential risks of nanotechnology

In August 2005, they successfully created a database that focused on the environmental, health, and safety implications of nanotechnology

A

Internation Council on Nanotechnology (ICON)

58
Q

A U.S. Government research and development (R&D) initiative

Consists of 20 federal departments and agencies

A

National Nanotechnology Initiative (NNI)

59
Q

Observe policies in the manufacture and use of nanomaterials
→ Promoted the responsible development of nanotech
o Environment
o Health and Safety Implications
o Ethical, Legal, and Societal Issues

A

National Nanotechnology Initiative (NNI)

60
Q

Weighing the pros and cons of nanotechnology is not simple. But the key step to this is to have a

A

COMPLETE UNDERSTANDING

science atechnolgy and societ (19 decks)

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