Lecture 15- Nanomaterials Flashcards
What is Nanotechnology?
Manipulation of matter at the nanoscale to generate size-dependent functionalities different from atom/molecules/bulk materials
What is a nanomaterial?
MAterial with atleast one of it’s dimensions is between 1-100nm
What are some the aspects of the fibers produced with nanotech?
100x stronger than steek w/ only 1/6th the weight
What is the EU definition of nanomaterial?
A natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50 % or more of the particles in the number size distribution, one or more external dimensions is in the size range 1 nm -100 nm.
What is Health’s Canada’s Definition of nanomaterial?
It is at or within the nanoscale in at least one external dimension, or has internal or surface structure at the nanoscale, or; It is smaller or larger than the nanoscale in all dimensions and exhibits one or more nanoscale properties/phenomena.
What is the nano scale?
1-100nm
What is nanoscale properties/phenomena?
properties which are attributable to size and their effects; these properties are distinguishable from the chemical or physical properties of individual atoms, individual molecules and bulk material; and, the term “manufactured” includes engineering processes and the control of matter.
What are 3 properties of Engineered Nanomaterials?
- More molecules/atoms on the surface
- Increased surface area
- Dominance of quantum effects
What is the diversity of ENMs?
Inifinite possibilites of nanomaterials design
How many physiochemical properties are there?
~5000 NM
What makes ENMs unique?
Increased % surface exposed atoms
Novel functionalities
Sophistication
What are some of the attributes that make nanomaterial unique?
- identity
- transformation in the body
- metrics
- vascular movement
- protein binding
- circulation thorugh body
- tissue trappong
- cellular uptake
- elimination
What are some of the attributes that make nanomaterial unique?
- identity
- transformation in the body
- metrics
- vascular movement
- protein binding
- circulation thorugh body
- tissue trappong
- cellular uptake
- elimination
What are 5 application of nanotech?
- Clean water
- Clean Energy
- Clean air
- Clean land
- Good health
What is the adantage of a superhydrophobic surface?
Can be void of moisutre
- prevent microbial growth
- easy washing
