Graphene 石墨烯材料
石墨烯(Graphene)是一種由石磨剝離出的單層石磨材料，2004年由英國曼徹斯特大學物理學家Andre Geim和Konstantin Novoselov成功分離出，確定其能單獨穩定存在，並因此在2010年共同獲得諾貝爾獎。
石墨烯，由碳原子以sp2混層軌域組成的六角形風潮晶格平面薄膜，厚度僅止一個碳原子直徑，0.335 nm，為目前世界上最薄卻堅硬的奈米材料，大小隨溫度升高而縮小，與任何其他物質的熱脹冷縮的性質不同；石墨烯兼具金屬和半導體的性質，如一般目前常用的半導體材料，可以摻入不同的氣體，形成n-型或p-型的半導體，若加熱可以去除其摻入的氣體，回復原來的石墨烯。其理論之物理特性如下:
導熱系數 : 5300 W/m•K(比奈米碳管和金鋼石好)
電子遷移率(electron mobility) : 15000 cm2/V•s以上
電阻 : 10 6 Ω•cm (是目前所有已知材料在室溫下具最低電阻的材料，導電密度是銅的一百萬倍)
商品介紹
石墨烯 Graphene
Research Grade Few-layers Graphene(FLG)
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Product |
Log. No |
Specific physical properties |
price |
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FLG1B8-22 |
FLG101B8-22 |
Purity: 99.0% Specific weight: ~0.03 Appearance: blackly, weightlessly and finely cotton-like powder. Oxygen Content: 22.84 ± 3.38 wt% Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers) Dimension length(X&Y or Diameter): 5~10 μm Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 38.9 S/cm |
Inquiry |
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FLG1W8-29 |
FLG101W8-29 |
Purity: 99.0% Specific weight: ~0.03 Appearance: blackly, weightlessly and finely cotton-like powder. Oxygen Content: 29.91 ± 2.34 wt% Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers) Dimension length(X&Y or Diameter): 5~10 μm Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 46.6 S/cm |
Inquiry |
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FLG158-18 |
FLG10158-15 |
Purity: 99.0% Specific weight: ~0.03 Appearance: blackly, weightlessly and finely cotton-like powder. Oxygen Content: 14.79 ± 2.02 wt% Thickness: < 10 nm (minimum: ~ 1 nm, layer number:2 ~ 7layers) Dimension length(X&Y or Diameter): 5~10 μm Electrical conductivity of FLG pallet with a thickness about 200 μm: ~ 56 S/cm |
Inquiry |
Referance Data of Research Grade Few-Layers Graphene
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R1. X-ray Diffraction Spectrum of used Natural Graphite, Graphite Oxide, FLG: |
R2. Scanning Electron Microscopy(SEM) image: |
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R3. Transition Electron Microscopy(TEM) image: |
R4. Atomic Forced Microscopoy(AFM) image |
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R5. X-ray Photoelectron Spectroscopy: |
R6. Ramman Spectra |
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