High-K material의 필요성
Thin SiO2의 문제점
게이트 유전막을 통한 boron penetration
20Å 미만의 두께에서
leakage current 발생
poly-si depletion effect
해결
SiO2에 비해 큰 유전상수
물리적 두께 증가
전자의 터널링 억제
Motivation
High Density
- More transistors onto a smaller chip
- Cost effective from
3. Operation Process (Manufacturing)
> Quality Assurance
· Product inspections after rolling cigarettes
· After manufacturing, check the features
· To find and reduce the defectives
· Cigarette quality control engineer
- Set the standard of the cigarette quality.
- Analyze and check the cause of defectives
- Use quality control technique such as 6-sigma
3D printing
3D printing or additive manufacturing (AM) refers to any of the various processes for printing a three-dimensional object. Primarily additive processes are used, in which successive layers of material are laid down under computer control. These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source.
Basic principles
If the
PHB`s Separation & Purification
Target of this study conducted to obtain a purely material PHB purification process debris in the damaged cells, and to remove the remaining medium components. PHB has been removed during the refining process with just remove the present efficiency of the overall purification stayed in the 70-80%.
PHB Synthesis Pathway
Alcaligenes eutrophus PHB in normal circ
Let's see the process flow of cellulosic ethanol which we are interested in(Figure 1). At the upstream, biomass harvest undergoes a pretreatment and cellulose hydrolysis by enzymes and then fermented to ethanol through the points. The initial contract for each course are as follows.
[Figure 1] bioethanol process
① pretreatment of raw material
To increase the effectiveness of fibrin d