(中南大學(xué) 粉末冶金國家重點(diǎn)實(shí)驗(yàn)室，長沙 410083)
摘 要: 一維W納米材料是一種新型的場(chǎng)發(fā)射材料，具有優(yōu)異的場(chǎng)發(fā)射性能。介紹場(chǎng)致電子發(fā)射的基本原理及性能評(píng)價(jià)標(biāo)準(zhǔn)；討論一維W納米材料的6種制備方法：氣相沉積法、電子束誘導(dǎo)法、蝕刻法、濺射法、自組裝法和模板法；分析不同制備方法對(duì)場(chǎng)發(fā)射性能的影響；指出電場(chǎng)增強(qiáng)因子是決定一維W納米材料場(chǎng)發(fā)射性能優(yōu)劣的首要因素，設(shè)計(jì)制造出結(jié)構(gòu)可靠、場(chǎng)發(fā)射性能優(yōu)異、成品率高以及壽命長的一維W納米材料器件是未來的研究重點(diǎn)。
關(guān)鍵字: 一維材料；W；納米材料；場(chǎng)發(fā)射性能；可控制備
（State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:The one-dimensional W nano-material is a new type of field emission materials with excellent field emission properties. The basic principles and performance evaluation criteria of field emission were introduced. Six synthetic methods of the one-dimensional W nano-materials were discussed, namely vapor deposition method, electron beam induced deposition method, etching method, sputtering method, self-catalytic method and template method. The
impact factors on the field emission properties of different preparation methods were analyzed. It is pointed out that the
electric field enhancement factor is the primary impact factor on the field emission properties of the one-dimensional W nano-materials, and design and manufacture of one-dimensional W nano-materials devices with reliable structure, excellent field emission performance, high yield and long life will be the focus of the future research.
Key words: one-dimension material; W; nano-material; field emission properties; controllable preparation
