[공학]Aerosol Methods

목차

Aerosol Methods
1. Introduction
◎ 주요 공정들.
2. Inert Gas Condensation Methods (IGC)
2-1. The Basic IGC Method

2-1. The Basic IGC Method
◎ Apparatus
◎ 주요기능 및 내용

2-2. Forced Flow Nanocrystal Reactor.
◎ Apparatus
◎ 주요기능 및 내용

3. Arc (spark) Evaporation Sources
3-1 Gas-Blow Arc (spark) Ablation
◎ Apparatus
◎ 주요 기능 및 내용
3-2 Arc Evaporated Cluster Source (AECS)
◎ Apparatus
◎ 주요 기능 및 내용
4. Gas-phase Reaction in a Free Jet
◎ Apparatus
◎ 주요 기능 및 내용
velocity

본문내용

Aerosol Methods
1. Introduction
◎ Aerosol : 고체 혹은 액체가 초미세입자로 공기중에
분산되어 있는 상태의 계.
◎The general steps of aerosol nanoparticle production.
◎ 주요 공정들.
1) Inert Gas Condensation Methods.
2) Arc (Spark) Evaporation Source.
3) Gas-Phase Reaction in a Free Jet.
4) Laser Ablation and Laser Driven Chemical Reaction Sources.
5) Sputtering.
2. Inert Gas Condensation Methods (IGC)
◎ Principal : synthesizing nanocrystals in a low pressure inert
gas environment.

2-1. The Basic IGC Method
◎ Apparatus
◎ 주요기능 및 내용
- One of the earliest techniques : by Granqvist and Buhrman
- Heating : radiatively via graphite heater
- Thermometer : i) Pt-PtRh  ≤ 1600°C
ii) optical pyrometer > 1600°C
- Vacuum : 2 x 10-6 Torr.
- Atmosphere : Ar at 0.5 ~ 4 Torr.
- Small shutter : 제조된 입자들을 TEM grid에 모으는 역할.
- Big lid : cooling plate 위에 입자를 모으는 역할.
- L-shaped Rod : lid controller
- (ex) Al-nanoparticles : 1 ~ 15 nm
Mg, Zn, Sn, Cr, Fe, Co, Ni, Cu, Ga …
- O2의 사용 : (ex) Al2O3-layer coating

참고 자료

없음