A variational principle is established for a moving jet in the electrospinning process to study the vibration property of the jet. A higher accelerated velocity and lower vibration frequency are needed in a multi-needle electrospinning system. This paper introduces an auxiliary electrode to enhance the electric strength, and a numerical analysis is carried out to design an optimal electric field.

The optically driving liquid crystal display (ODLCD) realizes display function by controlling the alignment directions of liquid crystals (LC) under exposure light, which has applications in optical devices. However, it is still limited to the laboratory for its long rewriting time of the ODLCD. The rewriting time for the ODLCD depending on SD1 with Nickel oxide (NiO) doping was studied. The SD1‐NiO distribution was discussed by SEM images. Among the 10 different ratios of SD1‐NiO concentration, the ratio of 1−0.08 is optimal and a minimum rewriting time of 6s has been reached.

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