Ⅰ. 철강의 활용
1. STEEL HOUSE
스틸하우스는 전통적인 목조주택 공법인 2"X4" 목재골조를 철강재 즉, 두께 1mm내외의 경량철골로 대체하여 짓는 공법으로 건물구조가 튼튼하여 지진에 강할 뿐만 아니라 철강회사에서 대량 생산되는 아연도강판을 가공하여 건물 구조재(골조)로 사용하므로 시공이 용이
전계 효과 트랜지스터(Field Effect Transistor)란, 전기장의 힘으로 반송자 통로(channel)의 반송자수를 조절하여 출력 전류를 통제하는 네(세) 단자 소자를 말한다. 이는 소수 반송자 수에 그 특성을 의존하는 BJT와 달리 다수 반송자 소자이며, 크게 MOSFET, JFET 등으로 나누어진다.
FET는 비교적 제작하기가 쉽고
Respect for Art ( Faulty )
Summary: the teacher saw a caricature of his face on the blackboard. It was sharp, accurate, and funny. The class waited for his reaction. The teacher observed it with interest and then said: "It is too well done to be erased. Let the artist first copy it on paper. My compliments to the talented caricaturist."
Segment's reason: Our team think this story is "F", be
process
Fast deposition speed
Cheap process device
1. Partially different thickness
2. Difficult to control the element ratio
3. Hard to deposition the complex material layer
4. Low film quality
3.Material to be evaporated by e-beam
- E-beam dashes against
material
- E-beam transport energy
to the material
- Then evaporation process
is start
SEM?
Scanning electron microscope
To analysis surface of specimen
Qualitative analysis at certain point
Operation principal of SEM
Emission electron from filament
Accelerate electron by electric field
Focusing electron by lens → mono-chromatic electron beam
Generate secondary electron and etc.
Detection of electron
the overall sensitivity. For that reason, this way of operation is more difficult to implement and, until recently, most of the cantilever biosensors were based on the static mode.
Cantilever detection Modes of detection
In the optical lever scheme, the cantilever free end movement is detected by measuring the reflected laser beam displacement into a position-sensitive photodetector (PSD).
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif