Calculations of binding energies due to a hydrogenic impurity located at the centre of a spheroidal quantum dot are presented. The effects of the radius of the quantum dot and of spatially variant electric potential confinement have also been investigated. The shifted parabolic potential and the inverse lateral shifted parabolic potential are compared with the well studied parabolic potential. While the parabolic potential and inverse lateral shifted parabolic potential enhance the binding energy, the shifted parabolic potential attenuates it.

The effect of confining electric potentials on binding energies in a spheroidal quantum dot

We developed particle patterning processes on microstructured surfaces for the combinatorial synthesis of high density peptide arrays. We worked with polymer microparticles with embedded amino acids derivatives and solid substrates with cylindrical microcavities. Using laser-based method, we demonstrated combinatorial particle patterning with 1 million spots/cm². With the so-called stochastic approach, we synthesized dipeptide array with a density of 25 million peptide spots/cm².

Microstructure-Assisted Particle Pattern Generation for High Density Peptide Arrays

Monodispersed colloidal spheres with dimensions in the range of 100 nm to 10 µm can be used as building blocks to fabricate highly ordered 3D micro- and nanostructures. For example, they can be self-assembled into closely packed lattices, which can be subsequently used as templates to generate 3D porous structures. Here we present the recent progress in our group regarding this approach.

Zhi-Yuan Li

Papers

Fabrication of Micro- and Nanostructures with Monodispersed Colloidal Spheres as the Active Components