4 research outputs found
A Generic Test of Modified Gravity Models which Emulate Dark Matter
We propose a generic test for models in which gravity is modified to do away
with dark matter. These models tend to have gravitons couple to a different
metric than ordinary matter. A strong test of such models comes from comparing
the arrival time of the gravitational wave pulse from a cosmological event such
as a supernova with the arrival times of the associated pulses of neutrinos and
photons. For SN 1987a we show that the gravity wave would have arrived 5.3 days
after the neutrino pulse.Comment: 4 pages, uses RevTex, no figure
Computer-aided design of nano-filter construction using DNA self-assembly
Computer-aided design plays a fundamental role in both top-down and bottom-up nano-system fabrication. This paper presents a bottom-up nano-filter patterning process based on DNA self-assembly. In this study we designed a new method to construct fully designed nano-filters with the pores between 5 nm and 9 nm in diameter. Our calculations illustrated that by constructing such a nano-filter we would be able to separate many molecules