### substance | conductor:

Semiconductor
* Most semiconductors are heat sensitive
  - more sensitive to temperature changes than metals
* Some semiconductors contain cadmium.
* account for the largest proportion of the active component sector.
* also have special optical properties when exposed to electricity or light.
* are all-silicon devices and hermetically sealed in metal or ceramic cases
  - an important class of materials widely used in the modern electronics
  - commodities, just like pork bellies and wheat
  - crystalline or amorphous solids with distinct electrical characteristics
  - essential parts of computers and other electronics
  - even more challenging than metals
* are materials that are neither conductors nor insulators
  - can be altered to be either a conductor or an insulator
  - part-time musicians
  - parts of personal computers
* are the brains of our machines, from computers to coffee pots
  - building blocks of the information age
  - driving force of the information technology age and of all things electronic
  - enabling technology of the information revolution
  - foundation of microelectronics
  - heart of the computer industry
  - materials that are neither good conductors nor good insulators
  - tiny crystals, such as silicon or germanium, that conduct electricity
* are used to make diodes, transistors, and integrated circuits
  - photocells
* behave somewhere in between.
* can be intrinsic or extrinsic.
* form the core of the electronics industry and global economy.
* go in everything from planes to phones to personal computers, all across the board.
* have an energy gap between the bonding electrons and the conduction band
  - important applications in the electronics industry
  - intermediate values of both
  - many very important applications today in the electronics industry
  - moderate resistance and insulators have high resistance
* is electronic devices
  - the modern term for silicon technology
* lie at the heart of micro-electronic devices.
* play a vital role in the modern electronic industry.
* processes now permit entire systems to fit on a single chip.
* put up varying levels of resistance, which constrains electron velocity.
* switches, high voltage breakdown, and gaseous electronics.
* very complex process.
* when formulated as ink has anti-inflammatory activity.
+ Photodetector: Electronic components

Semiconductor device
* All semiconductor devices are sensitive to electrostatic discharge.
* Many semiconductor devices used in electronics are particularly sensitive to static discharge.
* are conductors.

### substance | conductor | semiconductor:

Biochip
* BioChips introduce a new paradigm in protein molecular mapping strategies.
* are chips
  - glass slides to which are affixed microscopic, three-dimensional pads of a gel
  - tiny arrays of thousands of minute gel pads mounted on glass slides
* have applications in detecting toxic chemicals, identifying diseases, and fighting crime
  - multiple potential uses in medicine, including drug development
* is semiconductor
* represent the most advanced method to analyze biomolecules, particularly nucleic acids.

Compound semiconductor
* are made of two or more elements.
* lack sufficient hole mobility to provide spectroscopic information.

Doped semiconductor
* are referred to as extrinsic.
* have extra bands in the forbidden gap.

Electronic transistor
* is semiconductor
* use electrons to control, amplify, or switch electrons.

Gene chip
* are chips.
* enable researchers to detect expressions of a large number of genes at once.
* have the ability to show which genes in a cell are active at a specific time.
* measure the expression of every gene at once.