BIOPHYSICS: GPS on a QD

A Multivariate Qd-like Algorithm

The problem of constructing a univariate rational interpolant or Pad~ approximant for given data can be solved in various equivMent ways: one can compute the explicit solution of the system of interpolation or approximation conditions, or one can start a recursive algorithm, or one can obtain the rational function as the convergent of an interpolating or corresponding continued fraction. In eas...

Biophysics.

Biophysics of a Trespasser

Why were Hodgkin and Huxley so disappointed with their work? Through a brilliant train of thought that considered the linearity of the current-voltage curve and the relative amplitudes of ionic and gating currents (Hodgkin and Huxley, 1952), they concluded that the Na 1 current which drives the action potential passes through a channel—defined as a pore that passes ions at high rates compared t...

III-Nitride QD Lasers

III-Nitrides QD lasers are studied in detail. Two types of QD structures are considered, GaN/AlxGa1-xN/AlN and InxGa1-xN/ In0.04Ga0.96N /GaN. Effects of: QD size; QD and WL composition; and doping are studied through the calculations of gain, threshold current, and intensity modulation bandwidth. It is shown that GaN QDs are less sensitive to size fluctuations. Bandwidth increases with doping a...

QD-Based FRET Probes at a Glance

The unique optoelectronic properties of quantum dots (QDs) give them significant advantages over traditional organic dyes, not only as fluorescent labels for bioimaging, but also as emissive sensing probes. QD sensors that function via manipulation of fluorescent resonance energy transfer (FRET) are of special interest due to the multiple response mechanisms that may be utilized, which in turn ...