We calculate the phase diagram of amorphous solid water by performing molecular dynamics simulations using the extended simple point charge (SPC/E) model. Our simulations follow different paths in the phase diagram: isothermal compression/decompression, isochoric cooling/heating, and isobaric cooling/heating. We are able to identify low-density amorphous (LDA), high-density amorphous (HDA), and...

Our previous work established that DNA is naturally transferable on agar plates through a new transformation system which is regulated by the stationary phase master regulator RpoS in Escherichia coli. In this transformation system, neither additional Ca(2+) nor heat shock is required. Instead, transformation is stimulated by agar. The membrane protein OmpA, a gated pore permeable to ions and l...

The investigation of new DNA-based materials is an emerging area in material science as well as in physics, biosensorics, biotechnology, bionanotechnology. This review shows the state of the art in the fundamental studies of liquid crystals and liquid-crystalline dispersions of DNA molecules obtained as a result of their phase exclusion from water-salt polymer-containing solutions. The results ...