Single-particle placement via self-limiting electrostatic gating

Hong-Wen Huang; Bhadrachalam, Pradeep; Ray, Vishva; Seong Jin Koh
August 2008
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p073110
Academic Journal
This letter reports single-particle placement in which exactly one nanoparticle is electrostatically guided and placed onto a target location. Using an ∼20 nm Au nanoparticle colloid as a model system, we demonstrate that self-limiting interactions between a charged nanoparticle and a charged substrate surface are extremely effective in positioning a single Au nanoparticle on each target location. Detailed theoretical calculations revealed that the self-limiting capability in the nanoparticle positioning is due to an increase in the free energy barrier after the first nanoparticle lands on a target position, effectively blocking the approach of other nanoparticles.


Related Articles

  • The dielectric self-consistent field method. II. Application to the study of finite range effects. Boresch, Stefan; Steinhauser, Othmar // Journal of Chemical Physics;12/15/2001, Vol. 115 Issue 23, p10793 

    The dielectric self-consistent field (DSCF) method is used to study finite range corrections for the electrostatic contribution to solvation free energies. Detailed results obtained from calculations using Ewald summation (EW) and a generalized reaction field (GRF) technique are reported for the...

  • On the formation mechanism of the “pancake” decahedron gold nanoparticle. Grochola, Gregory; Russo, Salvy P.; Snook, Ian K. // Journal of Chemical Physics;Dec2007, Vol. 127 Issue 22, p224705 

    We have studied the thermodynamic and kinetic growth mechanisms behind the formation of the “pancake” decahedron (Dh) gold nanoparticle using computer simulation. Free energy calculations showed that the full pancake morphology is thermodynamically unstable across all the...

  • Free energy simulations: Correcting for electrostatic cutoffs by use of the Poisson equation. Resat, Haluk; McCammon, J. Andrew // Journal of Chemical Physics;5/15/1996, Vol. 104 Issue 19, p7645 

    The use of electrostatic cutoffs in calculations of free energy changes by molecular dynamics or Monte Carlo simulation is known to introduce errors, which can be quite large when the net charge of the system is changed. The Born equation has often been used to correct for such errors, but this...

  • Optimizing electrostatic affinity in ligand-receptor binding: Theory, computation, and ligand.... Kangas, Erik; Tidor, Bruce // Journal of Chemical Physics;11/1/1998, Vol. 109 Issue 17, p7522 

    Examines the theory, computation and ligand properties in optimizing electrostatic affinity in ligand-receptor binding. Description of the ligand properties leading to tight binding; Calculation of the electrostatic contribution to the binding free energy using linearized Poisson-Boltzmann...

  • Nonlinear swelling of polymer gels. Durning, C. J.; Morman, K. N. // Journal of Chemical Physics;3/1/1993, Vol. 98 Issue 5, p4275 

    We present a continuum theory for the nonlinear swelling of polymer gels. The approach is to solve the continuity equations for the network and liquid under the constraint that the instantaneous free energy be minimal. Constitutive relations are needed for the free energy density of the gel, W,...

  • Size dependent fluorescence spectroscopy of nanocolloids of ZnO. Irimpan, Litty; Nampoori, V. P. N.; Radhakrishnan, P.; Deepthy, A.; Krishnan, Bindu // Journal of Applied Physics;Sep2007, Vol. 102 Issue 6, p063524 

    In this article we present size dependent spectroscopic observations of nanocolloids of ZnO. ZnO is reported to show two emission bands, an ultraviolet (UV) emission band and another in the green region. Apart from the known band gap 380 nm and impurity 530 nm emissions, we have found some...

  • Mass correlation spectroscopy for mass- and size-based nanoparticle characterization in fluid. Modena, Mario M.; Burg, Thomas P. // Journal of Applied Physics;2015, Vol. 118 Issue 22, p224901-1 

    The characterization of nanoparticles is an important problem in many areas of applied physics, chemistry, medicine, and biology.Micromechanical resonators with embedded fluidic channels represent a powerful new technology for particle characterization through direct measurement of the buoyant...

  • Nematic-fluid structure in wall-field geometry. II. The direct correlation function. Sokolovska, T. G.; Sokolovskii, R. O.; Patey, G. N. // Journal of Chemical Physics;7/21/2006, Vol. 125 Issue 3, p034903 

    An explicit expression for the wall-nematic direct correlation function (DCF) is obtained for any orientation of the wall with respect to an external orienting field. It is found that inside the surface of the wall, the DCF rapidly tends to a function of the nematogen orientation and depends...

  • DNA-mediated electrostatic assembly of gold nanoparticles into linear arrays by a simple drop-coating procedure. Sastry, Murali; Kumar, Ashavani; Datar, Suvarna; Dharmadhikari, C. V.; Ganesh, Krishna N. // Applied Physics Letters;5/7/2001, Vol. 78 Issue 19, p2943 

    The assembly of nanoparticles in topologically predefined superstructures is an important problem in the area of nanoscale architecture. In this letter, we demonstrate the electrostatic assembly of lysine-capped colloidal gold particles on drop-coated DNA films. Electrostatic interaction between...


Read the Article


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

Try another library?
Sign out of this library

Other Topics