emission current density 中文意思是什麼

emission current density 解釋
發射電流密度
  • emission : n. 1. （光、熱、氣體等的）發出，發射，射出，放射；傳播。2. （紙幣等的）發行；發行額。3. 發出物，放射物。4. 【醫學】排出；遺精。
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. However, both of them have disadvantages. mo tip feas is fabricated by evaporating tip cathodes on base, so it has bad coherence with the base. on the other hand, the characteristics of silicon result in the bad heat stability, bad emission reliability, and low current density

    然而，這兩種陰極存在各自的缺點，如鉬尖錐是蒸鍍在基底上的，所以與基底的附著力不強;而硅的特性又決定了其熱穩定性差，發射的可靠性低，發射電流有限。
  2. Static - electric field of spindt cathode was analyzed and then field emission current was simulated. the method could direct the fabrication of spindt cathode. how the aspect ration and site density of cnts effect the field enhancement factor were also analyzed

    對碳納米管的頂端電場進行了計算，分析了其長徑比和生長密度對電場增強因子的影響，進而可以對場發射實驗進行指導。
  3. Due to their high aspect ratios and small tip radii of curvature, carbon nanotubes possess marvelous electron field emission properties, viz. low turn - on voltage ( e0 ) and large emission current density ( je ), and have good potential for using as materials in electron emitters of flat panel display

    由於奈米碳管具有極高的縱橫比與極小的尖端曲率半徑，因此奈米碳管有著超乎常態的電子場發射特性，低的場發射起始電壓與大的場發射電流密度，使其為電子場發射平面顯示器的良好材料。
  4. By changing the negative bias current density, gaseous ratio and total pressure, nanocrystalline diamond film is prepared by ion - assisted bombardment method at the substrate temperature of 700 ? 00 ? and mixture gaseous of ch4 and h2 the effect of growth parameters on the diamond film is studied. the diamond film presents very low compressive stress and excellent field emission character

    採用離子輔助轟擊法，以ch _ 4 、 h _ 2為源氣，襯底溫度為700 900 ，通過改變襯底負偏壓、 h _ 2和ch _ 4氣體比例以及工作氣壓，制備出納米金剛石薄膜，並對工藝參數對金剛石薄膜沉積的影響進行了研究。
  5. Films of the cnx nanotube were produced by thermal decomposition on fe - coated si substrates, and their low field emission properties have been investigated. a high - emission current density of 1. 28ma / cm2 for an applied field of 2. 54v / u m was achieved, implying cnx nanotubes have better electron field emitter properties than the films of carbon tubes and bcn tubes do under same experiment conditions

    860熱解乙二胺，在沉積有鐵催化劑的矽片上生長出cn _ x納米管薄膜，並進行了低場致電子發射特性測試，外加電場2 . 54v / m時，發射電流達到1 . 28ma / cm ~ 2 ，比相同實驗條件下制備出的碳管、硼碳氮管薄膜的場致電子發射性能優越。
  6. The density of its field emission catelectrode tip is about 24000tip / mm2, the onset emission voltage is 0. 5 ~ iv, the backward voltage is larger than 25v, the current of single tip is 0. 2na, the sensitivity is 98. 5mv / bar

    其場致發射陰極錐尖陣列密度達24000個mm ~ 2 ，起始發射電壓為1 5v ，反向電壓25v ，當正向電壓為5v時，單尖發射電流為0 . 2na ，壓力靈敏度為98 . 5mv bar 。
  7. It can be seen from the experiment results that field emission performance of pure diamond is not very good. after eptitaxy and silver coating, its field emission performance can be well improved. it is expecting to realize low - voltage electron and high current density field emission

    從實驗數據上看，電泳金剛石的場發射效果不十分理想，但經過外延生長和包銀處理后，場發射特性得到了明顯的改善，這說明金剛石表面修飾對金剛石場發射有重要意義。
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