Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 15 December 2000:
Vol. 290. no. 5499, pp. 2126 - 2129
DOI: 10.1126/science.290.5499.2126
Prev | Table of Contents | Next

Reports

Ultrahigh-Density Nanowire Arrays Grown in Self-Assembled Diblock Copolymer Templates

T. Thurn-Albrecht,1 J. Schotter,2 G. A. Kästle,2 N. Emley,2 T. Shibauchi,34 L. Krusin-Elbaum,3 K. Guarini,3 C. T. Black,3 M. T. Tuominen,2* T. P. Russell1*

We show a simple, robust, chemical route to the fabrication of ultrahigh-density arrays of nanopores with high aspect ratios using the equilibrium self-assembled morphology of asymmetric diblock copolymers. The dimensions and lateral density of the array are determined by segmental interactions and the copolymer molecular weight. Through direct current electrodeposition, we fabricated vertical arrays of nanowires with densities in excess of 1.9 × 1011 wires per square centimeter. We found markedly enhanced coercivities with ferromagnetic cobalt nanowires that point toward a route to ultrahigh-density storage media. The copolymer approach described is practical, parallel, compatible with current lithographic processes, and amenable to multilayered device fabrication.

1 Polymer Science and Engineering Department,
2 Physics Department, University of Massachusetts, Amherst, MA 01003, USA.
3 IBM T. J. Watson Research Center, Yorktown Heights, NY 10598, USA.
4 Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
*   To whom correspondence should be addressed. E-mail: tuominen{at}physics.umass.edu (M.T.T.); russell{at}mail.pse.umass.edu (T.P.R.)

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Density Multiplication and Improved Lithography by Directed Block Copolymer Assembly.
R. Ruiz, H. Kang, F. A. Detcheverry, E. Dobisz, D. S. Kercher, T. R. Albrecht, J. J. de Pablo, and P. F. Nealey (2008)
Science 321, 936-939
   Abstract »    Full Text »    PDF »
Graphoepitaxy of Self-Assembled Block Copolymers on Two-Dimensional Periodic Patterned Templates.
I. Bita, J. K. W. Yang, Y. S. Jung, C. A. Ross, E. L. Thomas, and K. K. Berggren (2008)
Science 321, 939-943
   Abstract »    Full Text »    PDF »
Reduction of anisotropic image resolution in transmission electron microtomography by use of quadrangular prism-shaped section.
T. Kaneko, H. Nishioka, T. Nishi, and H. Jinnai (2005)
J. Electron Microsc. (Tokyo) 54, 437-444
   Abstract »    Full Text »    PDF »
Directed Assembly of Block Copolymer Blends into Nonregular Device-Oriented Structures.
M. P. Stoykovich, M. Muller, S. O. Kim, H. H. Solak, E. W. Edwards, J. J. de Pablo, and P. F. Nealey (2005)
Science 308, 1442-1446
   Abstract »    Full Text »    PDF »
A Generalized Approach to the Modification of Solid Surfaces.
D. Y. Ryu, K. Shin, E. Drockenmuller, C. J. Hawker, and T. P. Russell (2005)
Science 308, 236-239
   Abstract »    Full Text »    PDF »
Curving and Frustrating Flatland.
K. Shin, H. Xiang, S. I. Moon, T. Kim, T. J. McCarthy, and T. P. Russell (2004)
Science 306, 76
   Abstract »    Full Text »    PDF »
Conducting nanowires built by controlled self-assembly of amyloid fibers and selective metal deposition.
T. Scheibel, R. Parthasarathy, G. Sawicki, X.-M. Lin, H. Jaeger, and S. L. Lindquist (2003)
PNAS 100, 4527-4532
   Abstract »    Full Text »    PDF »
Functional Materials Based on Self-Assembly of Polymeric Supramolecules.
O. Ikkala and G. ten Brinke (2002)
Science 295, 2407-2409
   Abstract »    Full Text »    PDF »
Dielectrophoretic Assembly of Electrically Functional Microwires from Nanoparticle Suspensions.
K. D. Hermanson, S. O. Lumsdon, J. P. Williams, E. W. Kaler, and O. D. Velev (2001)
Science 294, 1082-1086
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)