On-demand hierarchical patterning with electric fields

On-demand hierarchical patterning with electric fields.

We report a method to generate hierarchical topographical patterns on demand under the control of applied voltages. The method is implemented by harnessing the electro-creasing instability in multilayerelastomer films. The critical electric field for electro-creasing instability in a layer of elastomer scales with square root of the elastomer's modulus, while the wavelength of instability patte...

Notes on electric fields

Dielectrophoretic effect of nonuniform electric fields on the protoplast cell

In recent years, dielectrophoresis based microfluidics systems have been used to manipulate colloids, inert particles, and biological microparticles, such as red blood cells, white blood cells, platelets, cancer cells, bacteria, yeast, micro‌organisms, proteins, DNA, etc. In the current study the governing electric potential equations have been solved in the presence of cell for the purpose of ...

Electric fields on quasiperiodic potentials.

The effects of an electric field on the electronic spectrum and localization properties of quasiperiodic chains are studied. As quasiperiodic systems, we use the Harper and the Fibonacci potentials since we prove that both are closely interrelated. In the limit of a strong field, a ladder spectrum with localized states is observed. The ladder structure can be understood by using perturbation th...

Cryosurgery with Pulsed Electric Fields

This study explores the hypothesis that combining the minimally invasive surgical techniques of cryosurgery and pulsed electric fields will eliminate some of the major disadvantages of these techniques while retaining their advantages. Cryosurgery, tissue ablation by freezing, is a well-established minimally invasive surgical technique. One disadvantage of cryosurgery concerns the mechanism of ...