Oriented single-crystal diamond cones and their arrays

Zhang, W. J.; Meng, X. M.; Chan, C. Y.; Wu, Y.; Bello, I.; Lee, S. T.
April 2003
Applied Physics Letters;4/21/2003, Vol. 82 Issue 16, p2622
Academic Journal
One of the major problems in material science has been the difficulty in modification of the most endurable material, diamond, due to its extreme hardness and chemical inertness. Here, we report the development of a conical structure of diamond by performing bias-assisted reactive ion etching in hydrogen plasma. The diamond cones produced by this method are uniformly distributed over large areas on silicon substrates. Each cone was identified to be a single crystal with an apical angle as small as 28° and a very sharp tip (tip radii ∼2 nm). Their [001] axes are perpendicular to the substrate surface and parallel to each other. Such striking structures of individual single-crystal diamond cones and their arrays, in addition to their scientific value, may lead to a breakthrough in the design of high-performance mechanical and electronic devices.


Related Articles

  • Hydrothermal growth of diamond in metal-C-H20 systems. Zhao, Xing-Zhong; Roy, Rustum // Nature;2/6/1997, Vol. 385 Issue 6616, p513 

    Reports evidence that suggests that aggregates of small diamond crystals can be grown in a hydrothermal environment from a mixture of carbon, water and metal. The evidence from spectroscopic, diffraction and microscopic techniques; The distinction of a new diamond from the diamond seeds added...

  • Synthesis of diamond from a chlorinated organic substance under hydrothermal conditions. Korablov, Sergiy; Yokosawa, Kazunori; Sasaki, Taku; Korablov, Dmytro; Kawasaki, Akira; Ioku, Koji; Ishida, Emile H.; Yamasaki, Nakamichi // Journal of Materials Science;Sep2007, Vol. 42 Issue 18, p7939 

    Hydrothermal growth of diamond particles and films was achieved during interaction of a liquid organic precursor (C2H3Cl3) and 10 M NaOH in the presence of diamond or cubic BN seeds at the temperature 300 °C and 1 GPa pressure. Synthesized diamond was thoroughly characterized by TG-DTA, SEM,...

  • On the History of the Discovery of Nanodiamond Synthesis. Danilenko, V.V. // Physics of the Solid State;Apr2004, Vol. 46 Issue 4, p595 

    The history of the discovery of nanodiamond synthesis, the investigation of nanodiamond properties, and the application and organization of their production in the second half of the 20th century is expounded It is noted that this history is unique, since nanodiamond synthesis was discovered in...

  • Microstructure features of polycrystalline diamond synthesized directly from graphite under static high pressure. Sumiya, H.; Irifune, T.; Kurio, A.; Sakamoto, S.; Inoue, T. // Journal of Materials Science;Jan2004, Vol. 39 Issue 2, p445 

    Recently, ultra-hard polycrystalline diamond was synthesized from graphite by direct conversion under static high pressure. This paper describes the microstructure features of thus formed polycrystalline diamond. Transmission electron microscopy and electron diffraction have revealed that the...

  • On the determination of elastic modulus in very stiff materials by depth sensing indentation. Rico, A.; Maneiro, M. A. Garrido; Del Rio, M. T. Gómez; Salazar, A.; Rodríguez, J. // Journal of Materials Science;Nov2009, Vol. 44 Issue 21, p5795 

    Depth sensing indentation tests were carried out in stiff ceramics like Al2O3, AlN, SiC and B4C, using a diamond Berkovich tip. The experiments show that the accuracy of the data depends on the stiffness ratio between material and indenter. An iterative calibration procedure is proposed to get a...

  • Harder than diamonds? Cohen, Marvin L. // Sciences;May/Jun94, Vol. 34 Issue 3, p26 

    Describes the development of the world's hardest substance. Treatment of alchemists in history; Building of conceptual models by materials scientists; Measurement of material hardness; Quantum theory; Carbon Diamond as the hardest substance tested; Carbon nitride as a theoretical substance aimed...

  • From micro to nanocrystalline diamond grown on 3D porous titanium matrix. Braga, N.; Baldan, M.; Ferreira, N. // Journal of Materials Science;Jan2012, Vol. 47 Issue 1, p23 

    This study aims to give an overview on the growth process and characterization of electrodes produced by coating three-dimensional (3D) titanium (Ti) substrates with diamond films. Powder metallurgy (P/M) was the technique used to obtain the desired and controlled 3D porosity in the Ti matrix....

  • Calculation of Interplanar Spacing and Structure-Factor of Diamond-Type Structure. Quncheng Fan // Material Sciences;Jul2012, Vol. 2 Issue 3, p106 

    With the "site-factor S" of an addition atom, the possible four kinds of interplanar spacing of diamond-type structure was calculated. In addition, the structure-factor of this structure was calculated, and a correlativity between the interplanar spacing and the structure-factor was analysed....

  • DIAMOND GRAPHITIZATION STUDY BY METHOD OF HIGH-TEMPERATURE DIFFRACTION. POLUSHIN, N. I.; KUCHINA, I. Yu.; STEPAREVA, N. N. // Izvestiya Vysshikh Uchebnykh Zavedenii. Seriya Khimiya i Khimich;2013, Vol. 56 Issue 7, p140 

    The paper presents the results of research of the effect of temperature and exposure time on the parameters of the non-diamond carbon formed. The research was conducted using the direct method of high-temperature diffractometry. The experiments established the formation of well-structured...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics