Single walled carbon nanotubes persuaded optimization of the display parameters of a room temperature liquid crystal 4-pentyl-4′cyanobiphenyl

Ultrasensitive Multi-Functional Flexible Sensors Based on Organic Field-Effect Transistors with Polymer-Dispersed Liquid Crystal Sensing Layers

“…This result implies that the present flexible PDLC-i-OFET devices act as a photosensor, specifically a phototransistor when it comes to the photocurrent change controlled by the gate voltages 38 – 42 . Here it is noted that the P3HT part plays a key role in photosensing at the wavelength of 550 nm because of no optical absorption by the 5CB molecules 21 , 43 . This fact supports that the lower photocurrent can be measured from the PDLC-i-OFETs compared to the OFETs without the PDLC layers at the same incident light intensity because of the smaller amount of P3HT in the PDLC layers than the pristine P3HT layers (see Figure S10 ).…”

Liquid crystallinity of carbon nanotubes

“…Firstly, the threshold voltage will be reduced with the increase of the concentration of CNTs for several reasons. 33,37,40,41,[90][91][92][93][94][95][96] One of them is the enhanced dielectric anisotropy of the LC-CNT dispersion. Another is the reduced screen effect caused by reduced ion charges within the cells.…”

Electric Properties of Multiwalled Carbon Nanotubes Dispersed in Liquid Crystals and Their Influence on Freedericksz Transitions

“…For the 0.36% mass fraction of MWCNT with the nanotube powder concentration provided by the supplier ( = 0.07 g/cm ), we obtained a volumetric fraction . In this case, we obtained a decrease in the Freedericksz transition as indicated in [ 40 , 41 , 42 ].…”

“…Previous research on carbon nanotubes dispersed in liquid crystals, reported a decrease in transition threshold when carbon nanotubes were added. In order to reproduce this effect and obtain a consistent decrease in the transition voltage, we prepared two samples with higher concentrations to be used in experimental research [ 40 , 41 , 42 ]. The analyzed samples were prepared by mixing 7CB nematic with multiwalled carbon nanotubes with the average length of 10 m inner diameter of 4.5 nm and the outer diameter nm.…”