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Engineering carbon nanomaterials for future applications: energy and bio-sensor

機(jī)譯：工程碳納米材料的未來(lái)應(yīng)用：能源和生物傳感器

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This paper presents our recent results on carbon nanomaterials for applications in energy storage and bio-sensor. More specifically: (i) A novel binder-free carbon nanotubes (CNTs) structure as anode in Li-ion batteries. The interfacecontrolled CNT structure, synthesized through a two-step chemical vapor deposition (CVD) and directly grown on copper current collector, showed very high specific capacity - almost three times as that of graphite, excellent rate capability. (ii) A large scale graphene film was grown on Cu foil by thermal chemical vapor deposition and transferred to various substrates including PET, glass and silicon by using hot press lamination and etching process. The graphene/PET film shows high quality, flexible transparent conductive structure with unique electrical-mechanical properties; ~88.80 % light transmittance and ~ 100 Ω/sq sheet resistance. We demonstrate application of graphene/PET film as flexible and transparent electrode for field emission displays. (iii) Application of individual carbon nanotube as nanoelectrode for high sensitivity electrochemical sensor and device miniaturization. An individual CNT is split into a pair of nanoelectrodes with a gap between them. Single molecular-level detection of DNA hybridization was studied. Hybridization of the probe with its complementary strand results in an appreciable change in the electrical output signal.
機(jī)譯：本文介紹了我們?cè)谔技{米材料上用于能量存儲(chǔ)和生物傳感器的最新研究成果。更具體地說(shuō)：（i）一種新型的無(wú)粘結(jié)劑碳納米管（CNT）結(jié)構(gòu)作為鋰離子電池的陽(yáng)極。通過(guò)兩步化學(xué)氣相沉積（CVD）合成并直接在銅集流體上生長(zhǎng)的界面控制的CNT結(jié)構(gòu)顯示出非常高的比容量-幾乎是石墨的三倍，具有出色的倍率性能。 （ii）通過(guò)熱化學(xué)氣相沉積在Cu箔上生長(zhǎng)大規(guī)模石墨烯膜，并通過(guò)使用熱壓層壓和蝕刻工藝將其轉(zhuǎn)移到包括PET，玻璃和硅的各種基板上。石墨烯/ PET薄膜顯示出高質(zhì)量，柔性的透明導(dǎo)電結(jié)構(gòu)，具有獨(dú)特的機(jī)電性能； ?88.80％的透光率和?100Ω/ sq薄層電阻。我們演示了石墨烯/ PET薄膜作為場(chǎng)發(fā)射顯示器的柔性透明電極的應(yīng)用。 （iii）將單個(gè)碳納米管作為納米電極用于高靈敏度電化學(xué)傳感器和設(shè)備小型化。單個(gè)CNT被分成一對(duì)納米電極，它們之間有間隙。研究了DNA雜交的單分子水平檢測(cè)。探針與其互補(bǔ)鏈的雜交導(dǎo)致電輸出信號(hào)的明顯變化。

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