Self-assembly of functionally gradient nanoparticle structures

Jonghyun Park; Wei Lu
December 2008
Applied Physics Letters;12/15/2008, Vol. 93 Issue 24, p243109
Academic Journal
Morphology control of binary nanoparticles in an electric field was investigated by a computational model. The study revealed rich patterning dynamics and how collective actions of relative permittivity, volume fraction, and particle size can lead to a wide range of superlattice structures from functionally gradient columns to chain networks. These results suggest a significant degree of experimental control to assemble binary nanoparticles into new materials.


Related Articles

  • Highly confined mode above the light line in a two-dimensional photonic crystal slab. Tao Xu; Wheeler, Mark S.; Nair, Selvakumar V.; Ruda, H. E.; Mojahedi, Mohammad; Aitchison, J. Stewart // Applied Physics Letters;12/15/2008, Vol. 93 Issue 24, p241105 

    We found that certain modes above the light line can satisfy total internal reflection in a two-dimensional photonic crystal slab, resulting in negligible vertical leakage. A heterogeneous cavity utilizing such a mode was designed and constructed for the microwave spectrum. Numerical...

  • GaN/AlN short-period superlattices for intersubband optoelectronics: A systematic study of their epitaxial growth, design, and performance. Kandaswamy, P. K.; Guillot, F.; Bellet-Amalric, E.; Monroy, E.; Nevou, L.; Tchernycheva, M.; Michon, A.; Julien, F. H.; Baumann, E.; Giorgetta, F. R.; Hofstetter, D.; Remmele, T.; Albrecht, M.; Birner, S.; Dang, Le Si // Journal of Applied Physics;Nov2008, Vol. 104 Issue 9, p093501 

    We have studied the effect of growth and design parameters on the performance of Si-doped GaN/AlN multiquantum-well (MQW) structures for intersubband optoelectronics in the near infrared. The samples under study display infrared absorption in the 1.3–1.9 μm wavelength range,...

  • Structural diversity in binary nanoparticle superlattices. Shevchenko, Elena V.; Talapin, Dmitri V.; Kotov, Nicholas A.; O'Brien, Stephen; Murray, Christopher B. // Nature;1/5/2006, Vol. 439 Issue 7072, p55 

    Assembly of small building blocks such as atoms, molecules and nanoparticles into macroscopic structures—that is, ‘bottom up’ assembly—is a theme that runs through chemistry, biology and material science. Bacteria, macromolecules and nanoparticles can self-assemble,...

  • Multiferroics: Past, present, and future. Spaldin, Nicola A.; Sang-Wook Cheong; Ramesh, Ramamoorthy // Physics Today;Oct2010, Vol. 63 Issue 10, p38 

    The article focuses on the relationship between electricity and magnetism to form multiferroic materials during spontaneous magnetic and dielectric process. The author emphasized that the well-established primary ferroic orderings, ferroelectricity, ferromagnetism and ferroelasticity can be...

  • Student understanding of Symmetry and Gauss’s law. Singh, Chandralekha // AIP Conference Proceedings;2005, Vol. 790 Issue 1, p65 

    Helping students learn why Gauss’s law can or cannot be easily applied to determine the strength of the electric field at various points for a particular charge distribution, and then helping them learn to determine the shape of the Gaussian surfaces if sufficient symmetry exists can...

  • High School Physics: An Interactive Instructional Approach that Meets the Next Generation Science Standards. Shaobo Huang; Mejia, Joel Alejandro; Becker, Kurt; Neilson, Drew // Journal of STEM Education: Innovations & Research;Jan-Apr2015, Vol. 16 Issue 1, p31 

    The article investigates physics teaching and learning and the use of engineering design in physics teaching. It mentions that some common mistakes recognized by high school physics teachers include misconceptions on the impacts of magnetic field lines and electric field on charges. The...

  • An analytical method to study the effects of a substrate in surface-enhanced Raman scattering. Huang, Shao Ying; Wu, Bae-Ian; Zhang, Baile; Lee, Yee Hui; Liberman, Vladimir; Rothschild, Mordechai // Journal of Applied Physics;Dec2009, Vol. 106 Issue 11, p114306 

    In studies of surface-enhanced Raman scattering (SERS), individual metal nanoparticle and particle assemblies introduce enhancement of electromagnetic fields. However, the contributions to enhancement due to the substrate supporting the particles are yet to be studied analytically. In this...

  • Current hysteresis collapse and the formation condition for electric-field domains in lightly doped superlattices. Mityagin, Yu. A.; Murzin, V. N. // JETP Letters;8/10/96, Vol. 64 Issue 3, p155 

    It is shown that under resonance tunneling conditions the energy structure of electric-field domains in doped superlattices is substantially different from a resonance structure. As the impurity concentration decreases, the domain walls become wider and the current hysteresis becomes narrower...

  • Hall effect in quasi-two-dimensional superlattices in nonquantizing magnetic and strong electric fields. Shmelev, G. M.; �pshtein, �. M.; Maglevannyi, I. I. // Semiconductors;Aug97, Vol. 31 Issue 8, p781 

    The transverse electric field E[sub y] arising in quasi-two-dimensional superlattices (SLs) in a strong pulling electric field Ex and a weak magnetic field oriented in a direction perpendicular to the plane of the SL (H Z) is calculated. In the case where the electronic energy spectrum is...


Read the Article


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

Try another library?
Sign out of this library

Other Topics