Name: dry oxidation and vacuum annealing treatments for tuning the wetting properties of carbon nanotube arrays
Uploaded: 2013-04-15T12:00:00
Description: Watch this Scientific Journal Video about Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays at JoVE.com

这项工作是支持的Charyk基金会和弗莱彻·琼斯基金会下的授权号码9900600。作者非常感谢Kavli纳米科学研究所纳米加工工具的使用，在加州理工学院贝克曼研究所的分子材料研究中心在加州理工学院的XPS使用的技术和接触角测角仪，司加州理工学院地质与行星科学利用SEM。

1。碳纳米管（CNT）阵列增长<ol><li>准备一个硅晶片，与至少一个抛光面。有没有具体的要求的大小，结晶取向，掺杂型，电阻率，和氧化层的厚度。我们通常使用&lt;100&gt; n型用磷掺杂的硅晶片，具有一个直径为3英寸，厚度为381微米，和5-10Ωcm的电阻率。一般，此硅晶片具有热氧化物层的厚度为300nm。 </li><li>如果所制备的硅晶片不具有氧化物层，添加在晶片上的抛光面的厚度为300nm的氧化物层。?...

<ol>
	<li>Sansom, E., Rinderknecht, D., Gharib, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Controlled+partial+embedding+of+carbon+nanotubes+within+flexible+transparent+layers.">Controlled partial embedding of carbon nanotubes within flexible transparent layers.</a> Nanotechnology. 19, 035302 (2008).</li><li>Aria, A. I., Gharib, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reversible+Tuning+of+the+Wettability+of+Carbon+Nanotube+Arrays:+The+Effect+of+Ultraviolet/Ozone+and+Vacuum+Pyrolysis+Treatments.">Reversible Tuning of the Wettability of Carbon Nanotube Arrays: The Effect of Ultraviolet/Ozone and Vacuum Pyrolysis Treatments.</a> Langmuir. 27, 9005-9011 (2011).</li><li>Lee, S. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High-power+lithium+batteries+from+functionalized+carbon-nanotube+electrodes.">High-power lithium batteries from functionalized carbon-nanotube electrodes.</a> Nat. Nano. 5, 531-537 (2010).</li><li>Aria, A. I., Gharib, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+Dry+Oxidation+on+the+Performance+of+Carbon+Nanotube+Arrays+Electrochemical+Capacitors.">Effect of Dry Oxidation on the Performance of Carbon Nanotube Arrays Electrochemical Capacitors.</a> MRS Proceedings. 1407, (2012).</li><li>Bianco, A., Kostarelos, K., Prato, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Applications+of+carbon+nanotubes+in+drug+delivery.">Applications of carbon nanotubes in drug delivery.</a> Current Opinion in Chemical Biology. 9, 674-679 (2005).</li><li>Scardino, A. J., Zhang, H., Cookson, D. J., Lamb, R. N., Nys, R. d. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+role+of+nano-roughness+in+antifouling.">The role of nano-roughness in antifouling.</a> Biofouling: The Journal of Bioadhesion and Biofilm Research. 25, 757-767 (2009).</li><li>Rothstein, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Slip+on+Superhydrophobic+Surfaces.">Slip on Superhydrophobic Surfaces.</a> Annual Review of Fluid Mechanics. 42, 89-109 (2010).</li><li>Emsley, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Very+strong+hydrogen-bonding.">Very strong hydrogen-bonding.</a> Chemical Society Reviews. 9, 91-124 (1980).</li><li>Bhushan, B., Jung, Y., Koch, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Micro-+nano-+and+hierarchical+structures+for+superhydrophobicity,+self-cleaning+and+low+adhesion.">Micro- nano- and hierarchical structures for superhydrophobicity, self-cleaning and low adhesion.</a> Philosophical Transactions - Royal Society. Mathematical, Physical and Engineering Sciences. 367, 1631-1672 (2009).</li><li>Krupenkin, T., Taylor, J., Schneider, T., Yang, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=From+rolling+ball+to+complete+wetting:+The+dynamic+tuning+of+liquids+on+nanostructured+surfaces.">From rolling ball to complete wetting: The dynamic tuning of liquids on nanostructured surfaces.</a> Langmuir. 20, 3824-3827 (2004).</li><li>Sun, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Control+over+the+Wettability+of+an+Aligned+Carbon+Nanotube+Film.">Control over the Wettability of an Aligned Carbon Nanotube Film.</a> Journal of the American Chemical Society. 125, 14996-14997 (2003).</li><li>Ebert, D., Bhushan, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transparent,+Superhydrophobic,+and+Wear-Resistant+Coatings+on+Glass+and+Polymer+Substrates+Using+SiO2,+ZnO,+and+ITO+Nanoparticles.">Transparent, Superhydrophobic, and Wear-Resistant Coatings on Glass and Polymer Substrates Using SiO2, ZnO, and ITO Nanoparticles.</a> Langmuir. 28, 11391-11399 (2012).</li><li>Feng, X., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reversible+Super-hydrophobicity+to+Super-hydrophilicity+Transition+of+Aligned+ZnO+Nanorod+Films.">Reversible Super-hydrophobicity to Super-hydrophilicity Transition of Aligned ZnO Nanorod Films.</a> Journal of the American Chemical Society. 126, 62-63 (2003).</li><li>Xu, L., Karunakaran, R. G., Guo, J., Yang, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transparent,+Superhydrophobic+Surfaces+from+One-Step+Spin+Coating+of+Hydrophobic+Nanoparticles.">Transparent, Superhydrophobic Surfaces from One-Step Spin Coating of Hydrophobic Nanoparticles.</a> ACS Appl. Mater. Interfaces. 4, 1118 (2012).</li><li>Lau, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Superhydrophobic+carbon+nanotube+forests.">Superhydrophobic carbon nanotube forests.</a> Nano Letters. 3, 1701-1705 (2003).</li><li>Hong, Y., Uhm, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Superhydrophobicity+of+a+material+made+from+multiwalled+carbon+nanotubes.">Superhydrophobicity of a material made from multiwalled carbon nanotubes.</a> Applied Physics Letters. 88, 244101 (2006).</li><li>Lee, C. H., Johnson, N., Drelich, J., Yap, Y. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+performance+of+superhydrophobic+and+superoleophilic+carbon+nanotube+meshes+in+water-oil+filtration.">The performance of superhydrophobic and superoleophilic carbon nanotube meshes in water-oil filtration.</a> Carbon. 49, 669-676 (2011).</li><li>Hummers, W. S., Offeman, R. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preparation+of+Graphitic+Oxide.">Preparation of Graphitic Oxide.</a> Journal of the American Chemical Society. 80, 1339 (1958).</li><li>Park, S., Ruoff, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chemical+methods+for+the+production+of+graphenes.">Chemical methods for the production of graphenes.</a> Nature Nanotechnology. 4, 217-224 (2009).</li><li>Peng, Y., Liu, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+Oxidation+by+Hydrogen+Peroxide+on+the+Structures+of+Multiwalled+Carbon+Nanotubes.">Effects of Oxidation by Hydrogen Peroxide on the Structures of Multiwalled Carbon Nanotubes.</a> Industrial &amp; Engineering Chemistry Research. 45, 6483-6488 (2006).</li><li>Huang, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stable+superhydrophobic+surface+via+carbon+nanotubes+coated+with+a+ZnO+thin+film.">Stable superhydrophobic surface via carbon nanotubes coated with a ZnO thin film.</a> The Journal of Physical Chemistry. B. 109, 7746-7748 (2005).</li><li>Feng, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Super-Hydrophobic+Surfaces:+From+Natural+to+Artificial.">Super-Hydrophobic Surfaces: From Natural to Artificial.</a> Advanced Materials. 14, 1857-1860 (2002).</li><li>Cho, S., Hong, Y., Uhm, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hydrophobic+coating+of+carbon+nanotubes+by+CH4+glow+plasma+at+low+pressure,+and+their+resulting+wettability.">Hydrophobic coating of carbon nanotubes by CH4 glow plasma at low pressure, and their resulting wettability.</a> Journal of Materials Chemistry. 17, 232-237 (2007).</li><li>Stalder, A., Kulik, G., Sage, D., Barbieri, L., Hoffmann, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+snake-based+approach+to+accurate+determination+of+both+contact+points+and+contact+angles.">A snake-based approach to accurate determination of both contact points and contact angles.</a> Colloids and Surfaces. A, Physicochemical and Engineering Aspects. , 286-2892 (2006).</li><li>Naseh, M. V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fast+and+clean+functionalization+of+carbon+nanotubes+by+dielectric+barrier+discharge+plasma+in+air+compared+to+acid+treatment.">Fast and clean functionalization of carbon nanotubes by dielectric barrier discharge plasma in air compared to acid treatment.</a> Carbon. 48, 1369-1379 (2010).</li><li>Mawhinney, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Infrared+spectral+evidence+for+the+etching+of+carbon+nanotubes:+Ozone+oxidation+at+298+K.">Infrared spectral evidence for the etching of carbon nanotubes: Ozone oxidation at 298 K.</a> Journal of the American Chemical Society. 122, 2383-2384 (2000).</li><li>Sham, M., Kim, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surface+functionalities+of+multi-wall+carbon+nanotubes+after+UV/Ozone+and+TETA+treatments.">Surface functionalities of multi-wall carbon nanotubes after UV/Ozone and TETA treatments.</a> Carbon. 44, 768-777 (2006).</li><li>Banerjee, S., Wong, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rational+sidewall+functionalization+and+purification+of+single-walled+carbon+nanotubes+by+solution-phase+ozonolysis.">Rational sidewall functionalization and purification of single-walled carbon nanotubes by solution-phase ozonolysis.</a> The Journal of Physical Chemistry. B. 106, 12144-12151 (2002).</li><li>Xu, T., Yang, J., Liu, J., Fu, Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surface+modification+of+multi-walled+carbon+nanotubes+by+O2+plasma.">Surface modification of multi-walled carbon nanotubes by O2 plasma.</a> Applied Surface Science. 253, 8945-8951 (2007).</li><li>Felten, A., Bittencourt, C., Pireaux, J. J., Van Lier, G., Charlier, J. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Radio-frequency+plasma+functionalization+of+carbon+nanotubes+surface+O2,+NH3,+and+CF4+treatments.">Radio-frequency plasma functionalization of carbon nanotubes surface O2, NH3, and CF4 treatments.</a> Journal of Applied Physics. 98, 074308 (2005).</li><li>Chen, C., Liang, B., Ogino, A., Wang, X., Nagatsu, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Oxygen+Functionalization+of+Multiwall+Carbon+Nanotubes+by+Microwave-Excited+Surface-Wave+Plasma+Treatment.">Oxygen Functionalization of Multiwall Carbon Nanotubes by Microwave-Excited Surface-Wave Plasma Treatment.</a> The Journal of Physical Chemistry C. 113, 7659-7665 (2009).</li></ol>

我们认为，因为它可以在空气中进行，在一个标准间的温度和压力达到几个小时，取决于碳纳米管阵列的长度和功率的UV辐射的UV /臭氧处理，最方便的氧化技术。紫外线辐射，所产生的高强度的汞蒸气灯，在185 nm和254 nm，打破的分子键的外壁上的CNT，使臭氧，同时从空气转换由UV辐射，它们的表面氧化。26,27的氧化过程停止一旦CNT表面的完全官能化，防止被完全氧化成CO和CO 2分子?...

具有可调的润湿性能的合成材料的引入已使许多应用，包括自清洁表面和流体动力减阻装置。6,7许多研究报道表明成功地调谐的材料的润湿性，能够以改变其表面化学和地形的表面粗糙度。8-11在许多其他可用的合成材料，纳米材料已吸引了最多的关注，由于其固有的多尺度的表面粗糙度和其表面可容易地由普通的方法官能化。这些纳米结构材料的几个例子，包括氧化锌的SiO 2，12,13，12,14的ITO，12和碳纳米管（CNT）。15-17我们相信，可逆地调谐的CNT的润湿性的能力有其自己的美德，因为它们被认为是为未来的应用的最有前途的材料之一系统蒸发散。 碳纳米管可以被亲水性的官能化含氧氧化处理过程中引入的官能团，它们的表面。迄今为止，最常用的方法，引入氧吸附的CNT是公知的湿式氧化技术，涉及使用强酸和氧化剂如硝酸和过氧化氢​​。18-20这些湿氧化技术是难以向上扩展到工业水平，因为安全和环境问题，和相当长的时间来完成氧化过程。此外，可能需要一个临界点干燥方法可以采用，以尽量减少毛细管力的影响，可能会破坏在干燥过程中的微观结构和总体取向的CNT阵列。干的氧化处理，如UV /臭氧和氧等离子体处理，提供一个更安全，更快，更容易控制的氧化过程，相比于上述的湿式氧化处理。 碳纳米管可以通过除去从它们的表面上的附加的含氧官能团的疏水性。到目前为止，复杂的过程总是涉及高度疏水性的碳纳米管阵列。通常情况下，都必须在这些阵列涂有非润湿性的化学物质，如PTFE，氧化锌，和氟烷基硅烷，15,21,22或安抚被氟或烃等离子处理，如CF4和CH 4。16,23虽然上述治疗方法是不是太困难，将其推广到工业级的，他们是不可逆的。一旦在CNT暴露这些治疗，他们可以不再被赋予亲水性，通过使用共同的氧化方法。 本文所提出的方法表明碳纳米管阵列的润湿性的影响可以被调谐直截了当地和方便地通过干氧化和真空退火处理（ 图1）的组合。氧一通过这些处理而诱导的夏文建，梁国庆和解吸过程是高度可逆的，因为他们的非破坏性的性质和其它杂质的情况下。因此，这些处理允许碳纳米管阵列要重复的亲水性和疏水性之间的切换。另外，这些处理是非常实用的，经济的，并且可以很容易地按比例放大，因为它们可以使用任何商业真空烘箱和UV /臭氧或氧等离子体清洁器执行。 请注意，垂直取向的碳纳米管阵列用在这里是由标准的热化学气相沉积（CVD）技术生长。这些阵列通常是含碳的前体在升高的温度下的气体的流动的下在石英管式炉中的催化剂涂覆的硅晶片基板上生长。阵列的平均长度，可以改变从几微米至一毫米长，通过改变生长时间。

<table border="1">
<tbody>
 <tr>
 <td> Material Name</td>
 <td> Company</td>
 <td> Catalogue Number</td>
 <td> Comments (optional)</td>
 </tr>
 <tr >
 <td>Lindberg Blue M Mini-Mite tube furnace</td>
 <td>Thermo Scientific</td>
 <td>TF55030A</td>
 <td>1" tube furnace for CNT array growth</td>
 </tr>
 <tr >
 <td>Electronic mass flow controllers</td>
 <td>MKS</td>
 <td>PFC-50 &pi;MFC</td>
 <td>Max flow rate of 1000 sccm </td>
 </tr>
 <tr >
 <td>Electronic pressure controller</td>
 <td>MKS</td>
 <td>PC-90 &pi;PC</td>
 <td>Max pressure of 1000 Torr</td>
 </tr>
 <tr >
 <td>1" quartz tube</td>
 <td>MTI Corp.</td>
 <td>>EQ-QZTube-25GE-610</td>
 <td>1" D x 24" L</td>
 </tr>
 <tr >
 <td>Hydrogen gas</td>
 <td>Airgas</td>
 <td>HY UHP200</td>
 <td>CNT array growth precursor gas, 99.999% purity</td>
 </tr>
 <tr >
 <td>Ethylene gas</td>
 <td>Matheson</td>
 <td>G2250101</td>
 <td>CNT array growth precursor gas, 99.999% purity</td>
 </tr>
 <tr >
 <td>Argon gas</td>
 <td>Airgas</td>
 <td>AR UHP200</td>
 <td>CNT array growth precursor gas, 99.999% purity</td>
 </tr>
 <tr >
 <td>Silicon wafer</td>
 <td>El-Cat</td>
 <td>2449</td>
 <td>With 300 nm polished thermal oxide layer</td>
 </tr>
 <tr >
 <td>Iron pellets</td>
 <td>Kurt J Lesker</td>
 <td>EVMFE35EXEA</td>
 <td>99.95% purity</td>
 </tr>
 <tr >
 <td>Aluminum oxide pellets</td>
 <td>Kurt J Lesker</td>
 <td>EVMALO-1220B</td>
 <td>99.99% purity</td>
 </tr>
 <tr >
 <td>E-beam evaporator</td>
 <td>CHA Industries</td>
 <td>CHA Mark 40</td>
 <td>For buffer and catalyst layer deposition</td>
 </tr>
 <tr >
 <td>UV/ozone cleaner</td>
 <td>BioForce Nanosciences</td>
 <td>ProCleaner Plus</td>
 <td>For oxidizing CNT array</td>
 </tr>
 <tr >
 <td>Oxygen plasma cleaner</td>
 <td>PVA TePla</td>
 <td>M4L</td>
 <td>For oxidizing CNT array</td>
 </tr>
 <tr >
 <td>Vacuum oven</td>
 <td>VWR</td>
 <td>97027-664 </td>
 <td>For deoxidizing CNT array</td>
 </tr>
 <tr >
 <td>SEM</td>
 <td>Zeiss</td>
 <td>1550 VP</td>
 <td>For CNT array growth characterization</td>
 </tr>
 <tr >
 <td>XPS</td>
 <td>Surface Science </td>
 <td>M-Probe</td>
 <td>For surface chemistry characterization</td>
 </tr>
 <tr >
 <td>Contact angle goniometer</td>
 <td>ram&eacute;-hart</td>
 <td>Model 190</td>
 <td>For wetting properties characterization</td>
 </tr>
 </tbody>
</table>

dry oxidation and vacuum annealing treatments for tuning the wetting properties of carbon nanotube arrays

在这篇文章中，我们将介绍一个简单的方法来可逆调整的润湿性垂直排列的碳纳米管（CNT）阵列。在这里，被定义为碳纳米管阵列密集的多壁碳纳米管的取向垂直于所述生长衬底的生长过程的结果的标准热化学气相沉积（CVD）技术。1,2这些碳纳米管阵列，然后暴露于真空退火处理，以使它们更疏水性或干燥氧化处理，以使它们更具亲水性。疏水性的碳纳米管阵列可以被亲水性的暴露它们干燥氧化处理，通过将它们暴露到真空退火处理，而亲水性的碳纳米管阵列可以打开疏水。使用两种治疗的组合，可以反复切换碳纳米管阵列之间的亲水性和疏水性， 因此 ，这样的组合在许多工业和消费者应用中显示出非常高的电位，包括药物递送系统和高功率密度超级电容器。3-5 不同的润湿性的碳纳米管阵列的关键是控制氧吸附物的表面浓度。氧吸附物基本上可以被引入通过暴露任何氧化处理的碳纳米管阵列。在这里，我们使用干式氧化的处理，如氧等离子体和UV /臭氧，与含氧的官能团的官能化的CNT的表面。这些含氧的官能团允许的表面之间的CNT与水分子形成氢键，使CNT的亲水性。要打开他们的疏水性，吸附的氧气必须从碳纳米管的表面。在这里，我们采用真空退火处理，以诱导氧脱附过程。碳纳米管阵列具有极低的表面浓度的氧吸附表现出了超疏水性的​​行为。

CVD法上述的查询结果密密麻麻垂直对齐的多壁碳纳米管阵列与一个典型的直径，数量的壁，和碳纳米管间的间距为约12 - 20纳米，8 - 16的墙壁，和40 - 100nm的分别。阵列的平均长度，可以改变从几微米长（ 图6a）到毫米长（ 图6b），通过改变生长分别从5分钟至1小时的时间。典型的垂直对齐方式是在长度规模较大，存在一些纠葛在长度规模较小。 <p class="jove_...

Watch this Scientific Journal Video about Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays at JoVE.com

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

本文介绍了一种简单的方法来制作垂直排列的碳纳米管阵列化学气相沉积，并随后调整其润湿性能，使他们暴露在真空退火或干式氧化处理。

干式氧化及真空退火处理调整的润湿性能的碳纳米管阵列

In this article, we describe a simple method to reversibly  tune the wetting properties of vertically aligned carbon nanotube (CNT) arrays.  Here, CNT ...

Research

JoVE Journal

Engineering

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

制备，致密，副本三维碳纳米管微结构成型

The introduction of new materials and processes to microfabrication has, in large part, enabled many important advances in microsystems, lab-on-a-chip ...

科研

工程学

Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers

黄金纳米粒子作为软木塞氮掺杂碳纳米管杯的合成与功能构造

Nitrogen-doped carbon  nanotubes consist of many cup-shaped graphitic compartments termed as  nitrogen-doped carbon nanotube cups (NCNCs).  These ...

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

微调尺寸和最小化固态纳米孔的噪音

Solid-state nanopores have emerged as a versatile tool for the characterization of single biomolecules such as nucleic acids and proteins1. However, the ...

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

对于一个以离子门控碳纳米管共阴极的串联有机太阳能电池的生产环境法

A method of fabricating organic photovoltaic (OPV) tandems that requires no vacuum processing is presented. These devices are comprised of two ...

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

低温碳纳米管垂直互连的制作兼容半导体技术

We demonstrate a method for the low temperature growth (350 &#176;C) of vertically-aligned carbon nanotubes (CNT) bundles on electrically conductive ...

Development of an Experimental Setup for the Measurement of the Coefficient of Restitution under Vacuum Conditions

实验装置的研制归还系数在真空条件下测量

The Discrete Element Method is used for the simulation of particulate systems to describe and analyze them, to predict and afterwards optimize their ...

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

高炉矿渣的双向稳定物价：沉淀碳酸钙和沸石重金属吸附剂的合成

The aim of this work is to present a zero-waste process for storing CO2 in a stable and benign mineral form while producing zeolitic minerals with ...

Precision Milling of Carbon Nanotube Forests Using Low Pressure Scanning Electron Microscopy

碳纳米管森林精密铣床使用低压扫描电子显微镜

A nanoscale fabrication technique appropriate for milling carbon nanotube (CNT) forests is described. The technique utilizes an environmental scanning ...

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

由界面润湿片的热力学生长触发的液晶中的定向转变

In liquid crystal (LC) physical chemistry, molecules near the surface play a great role in controlling bulk orientation. Thus far, mainly to achieve ...

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

真空沉积有机发光二极管的生产与表征

A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex ...