作者takeiteasy (takeiteas)
看板NDHU-phy99
標題[閒聊] 奈米科技概論
時間Fri Apr 17 20:56:03 2009
以下為簡單小整理,詳細內容就‧‧‧
‧奈米結構的六種性質
1. Thin Film Interference
2. Non-Reflecting Coatings
3. Super Hydrophobicity
4. Self-Cleaning
5. Particulate Dichroism
6. The Localized Surface Plasmon Resonance
‧電晶體結構
。collector 。reservsoir
。emitter 。source
。base 。gate
‧半導體 p-type、n-type
‧Moore's law
‧電子漂移
。mean free path
。drift velocity
。電子在導體(直徑d)中的移動方式 d >> mean free path
d ~ mean free path
d < mean free path
‧自由電子
‧光學顯微鏡
。成像公式 。解析度
。Numerical Aperture 。Rayleigh criterion
。Angular resolution 。Spatial resolution
。Depth of focus
‧SEM儀器偵測訊號提供的訊息
。二次電子 → 表面結構
。背向散射 → 原子序對比
。X-ray訊號 → 元素分析 (EDS)
高解析度元素分析 (WDS)
。繞射及背向 → Grain Orientation
。陰極螢光 → 半導體及絕緣體缺陷或雜質
‧SPM family
Scanning Probe Microscopy
(1) STM (Scanning Tunneling Microscopy)
(2) AFM (Atomic Force Microscopy)
(3) MFM (Magnetic Force Microscopy)
(4) Scanning Near-Field Optical Microscopy
(5) Capacitance Force Microscopy
‧STM
。Quantum Barrier
。constant current mode
。constant height mode
‧AFM
。electric dipole-dipole interaction (short range force 0.1~0.2nm)
。electric field representation、electric field (dipole)
。electric potential energy
。Leonard-Jones potential energy
。用排斥力掃瞄 - contact mode
用吸引力掃瞄 - noncontact mode
用凡得瓦力掃瞄 - noncontact mode
tapping mode 輕敲式
‧MFM
。magnetic dipole-dipole interaction (longe range force 30~200nm)
。magnetic vector potential
。B-field representation
。magnetic potential energy
。static mode、dynamic mode
有錯請幫忙更正 謝謝 ~
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