Gel
electrophoresis (GE) is one of the most general tools in biomedicine.
However, it suffers from low resolution, and its mechanism has not
been fully revealed yet. Herein, we presented the dispersion model
of w
2 (t) ∝ Tt, showing the band dispersion (w) via
temperature (T) and running time (t) control. Second, we designed an efficient GE chip via the time
control and rapid Joule heat self-dissipation by thermal conductive
plastic (TCP) and electrode buffer. Third, we conducted the simulations
on TCP and polymethylmethacrylate (PMMA) chips, unveiling that (i)
the temperature of TCP was lower than the PMMA one, (ii) the temperature
uniformity of TCP was better than the PMMA one, and (iii) the resolution
of TCP was superior to the PMMA one. Fourth, we designed both TCP
and PMMA chips for experimentally validating the dispersion model,
TCP chip, and simulations. Finally, we applied the TCP chip to thalassemia
and model urine protein assays. The TCP chip has merits of high resolution,
rapid run of 6–10 min, and low cost. This work paves the way
for greatly improving electrophoretic techniques in gel, chip, and
capillary via temperature and time control for biologic study, biopharma
quality control, clinical diagnosis, and so on.