system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although there are many complex designs which aim to improve resolution and sample contrast.
1. The type of Optical microscope
1) Bright-field microscopy
Br
resolution)이 증가하기 때문이다. 다음 그림은 여러 전자기파의 파장을 보여 준다.
TEM의 구성
TEM은 여러개의 서로 다른 system을 합쳐서 극히 얇은 시편의 위치 및 방향을 조절하고 영상을 형성하는 1개의 기능을 수행하도록 구성되어 있다.
Illuminating system은 전자총(electron gun)과 집광렌즈(condenser lenses)로
system
(Gear 방식으로 Cam 방식보다 Pulse가 적다.)
c. 가동이 쉽고 여러 용매 사용 가능.
d. Isocratic에서 Gradient까지 사용.
e. 내구성이 우수.
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HPLC grade solvent가 물인경우 18 mega ohm이상.
Low Viscosity
용매간 섞임성. (miscibility No. 차가 15미만 )
이동상은 고정상을 변화시키면 안된다.
분리코자 하는 시료
(4) Double patterning
The double patterning is divided into four parts, leading with wafer requirements and then two sets of lithographic requirements (Generic Pitch Splitting - Double Patterning Requirements Driven by MPU metal Half-Pitch and Generic Spacer Patterning Requirements - Driven by Flash). The lithography requirements are different for each process; the requirements for pitch splitti
Figure 13 shows that cryo pump is cooling pump. It means this pump is cooling, liquefaction and store air, not pumping. Generally, it has 3 processes like condensation, absorption and trap at low temperature. The cooled air or molecules do not have any momentum so it is no possibility to heat any molecules. It means vacuum.
Cryo pump have High emission velocity and high emission capacity so it