With a development and an increasing interest in flexible electronics, for civil, medical, space, and military
domains, we present a design of a patch antenna using CNT-polymer ink on fabrics. We have prepared CNT
ink, and measured its properties to use as a conducting material for making patches. The antenna is designed on
cotton and Songket fabric that resonates at 2.3GHz on a 1.23 mm, and 1.06 mm thick fabric substrate with Εr ≈ 1.7, and Εr ≈ 1.9 for cotton and Songket respectively. Measured and simulation results shows that band width depends on thickness and type of fabrics we used. All antenna parameters such as VSWR, return loss, gain and radiation pattern meet the design criteria.
In the present work we have used a two probe model, consisting of sandwiched molecules wires, of
thiophene, between platinum electrodes, to study the mechanism of charge transport, temperaturedependence,
atomic configuration of electrodes, molecule-electrode contacts, as well as effect of rotation of
molecular wire on the conductance. We find that for short length the charge transport is explained by
tunnelling, and with increase in molecular length it changes hopping phenomena; which in turn supported
by modeling the conductance of molecular wire with change in temperature for the system. Thus the results
shows highly length dependent and temperature invariant behaviour in the short wires and weakly length
dependent and temperature variant behaviour in the longer molecular wires. The geometric symmetries for
the thiophene molecule lead to the difference of the contact configurations between the molecule and the
electrodes, resulting in different conductance.