MODULE 12The Nano World

32問 • 1年前

問題一覧

____deals with the dimensions and tolerances of less than ___ nm, especially in the manipulation of individual atoms and molecules.

Nanotechnology 100 nm

The idea of nanotechnology and Nano science started on ___(date) when American Theoretical Physicist _____introduce a method in which scientists can direct and control individual atoms and molecules in his talk

December 29, 1959 Richard Feynman

___introduce a method in which scientists can direct and control individual atoms and molecules in his talk

Richard Feynman

Method of Richard Feynman

There's Plenty of Room at the Bottom"

____used the term NANOTECHNOLOGY to describe semi-conductor processes such as thin film deposition and ion beam milling exhibiting characteristic control on the order of nanometer.

Professor Norio Taniguchi

to describe semi-conductor processes such as thin film deposition and ion beam milling exhibiting characteristic control on the order of nanometer.

nanotechnology

Invention of____ marked the beginning of Nanotechnology.

Scanning Tunnelling Microscope Atomic Force

These instruments enable scientists to see and manipulate atoms.

Scanning Tunnelling Microscope Atomic Force microscopy

is the study of phenomena and fine-tuning of materials at atomic, molecular and macromolecular scale, where properties differ significantly from those at a large scale.

nanotechnology

is an advanced interdisciplinary field that encompasses science and technology that manufactures materials of great help to the improvement of various areas of society especially health care, environment, energy, food, water and agriculture.

nanotechnology

are chemical substances or materials that are manufactured and used at a very small scale.

nanomaterials

are developed to exhibit novel characteristics compared to the same material without nanoscale features, such as increased strength, chemical reactivity or conductivity.

nanomaterials

_info___(name) discussed that nano-sized particles exist in nature and can be created from a variety of products, such as carbon or minerals like silver, but nanomaterials by definition must have at least one dimension that is less than approximately 100 nanometers.

The National Institute of Environmental Health Science

Materials engineered to such a small scale are often referred to as____

engineered nanomaterials (ENMs)

is a billionth of a meter (10^9)

nanometer

Manufacturing at the nanoscale is known as___

nanomanufacturing.

includes research, development, and integration of top-down processes and increasingly complex bottom-up or self-assembly processes.

nano manufacturing

basic approaches to nanomanufacturing:

1. Top-down fabrication 2. The bottom-up approach

reduces large pieces of materials all the way down to the nanoscale, like someone carving a model airplane out of a block of wood.

Top-down fabrication

This approach requires larger amounts of materials and can lead to waste if excess material is discarded.

Top-down fabrication

creates products by building them up from atomic- and molecular-scale components, which can be time-consuming.

The bottom-up

Scientists are exploring the concept of placing certain molecular-scale components together that will spontaneously "self-assemble," from the bottom up into ordered structures.

The bottom-up approach

a process in which chemicals react to produce very pure, high-performance film

Chemical vapor deposition

is one method for depositing highly controlled thin films

Molecular beam epitaxy

is a process for depositing one-atom-thick layers on a surface

Atomic layer epitaxy

is a process in which the tip of an atomic force microscope is "dipped" into a chemical fluid and then used to "write" on a surface, like an old fashioned ink pen onto paper

Dip pen lithography

is a process for creating nanoscale features by "stamping" or "printing" them onto a surface

Nanoimprint lithography

is a high-volume process to produce nanoscale devices on a roll of ultrathin plastic or metal

Roll-to-roll processing

describes the process in which a group of components come together to form an ordered structure without outside direction

Self-assembly

may damage the lungs.

nano particles

___ can cause cell damage and damage to the DNA.

'free radicals'

a type of white blood cell that organizes the immune system to fight infections.

t cells

MATH finals Module 8 Quantifiers and Negations

ユーザ名非公開 · 7問 · 2年前

MATH finals Module 8 Quantifiers and Negations