Midterm Study

Question 1

When switch is on :

Answer 1

There are multiple paths for transports

Question 2

When switch is off:

Answer 2

• No transports available

- Generate a barries.

Question 3

A barrier is like a _____for e’ to overcome.

Answer 3

hill

Question 4

Conservation of current at nodes and potential in loops __________ at nanoscale

Answer 4

holds

Question 5

When an electron passes through a potential from 0 to 1V. The energy gained by it is ______________.

Answer 5

1.6 X 10E-19 J or 1 eV

Question 6

What is Rydberg’s const

Answer 6

13.6 eV

Question 7

Where do we find a Quantum ?

Answer 7

• An atom
• Spaces in a crystal lattice
• Inversion charge layer in MOSFET
• Electron barriers that is induced at all surfaces
• QW lasers

Question 8

At equilibrium all materials have only one __________

Answer 8

Fermi level

Question 9

Boron is an __________ and creates a ____________ device

Answer 9

acceptor, p-type

Question 10

Arsenic is an __________ and creates a ____________ device

Answer 10

donor, n-type

Question 11

What are the two types of carrier motion

Answer 11

• Thermal motion with no electric field (E)

- Drift Velocity of the carriers due to electric field (E)

Question 12

When is the only time ohms law holds in this course

Answer 12

When electrons behave as gas and are subject to collisions at an average time

Question 13

When e’ or h+ are exposed to an electric field (E). They experience a force (qE) and gain velocity, the acceleration is (qE/m) . The velocity is proportional to what _______________ ?

Answer 13

Electric field

Question 14

Wave function contains ___________ that can be known about particles with the system.

Answer 14

all the information

Question 15

Schrodinger’s Equation predicts that e’ exists in ___________ and have to satisfy the wave function

Answer 15

states

Question 16

At nanoscale, one has to account for all the ________ and their _________ and ____________.

Answer 16

states, fillings, unfillings

Question 17

an eigenstate is where

Answer 17

e’/h+ are allowed to exist

Question 18

What is postulate 1 ?

Answer 18

The state of the QM system is defined completely by the function based on the location and time

Question 19

What is postulate 2 ?

Answer 19

Our measurements are related to operator, that is an if an operator exists we can observe it

Question 20

What is postulate 3 ?

Answer 20

If something can be measured then an operator can be written for it.

Question 21

What is Pauli’s exclusion principle?

Answer 21

The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.