Pyro-electrohydrodynamic printing of liquid crystals

Veronica Vespini; Jaromir Behal; Lisa Miccio; Luciano De Sio; Sara Coppola; Pietro Ferraro

doi:10.1117/12.2675729

15 August 2023 Pyro-electrohydrodynamic printing of liquid crystals

Veronica Vespini, Jaromir Behal, Lisa Miccio, Luciano De Sio, Sara Coppola, Pietro Ferraro

Proceedings Volume 12618, Optical Measurement Systems for Industrial Inspection XIII; 1261831 (2023) https://doi.org/10.1117/12.2675729
Event: SPIE Optical Metrology, 2023, Munich, Germany

Conference Poster

Abstract

Microlenses are of technological importance for a wide range of industrial applications enabling in a single element the demand for small form factors, high resolution, and cost effectiveness. The micro-optical elements composed of a series of lens, with diameters ranging from several micrometers to several millimeters have been successfully employed in imaging, sensing, photovoltaics, solar concentrators and optical communications applications. In the last decades, microlenses have been manufactured using multi-step processes such as photolithography, resist-melting, soft-lithography and hot-embossing. More recently, simple and efficient manufacturing methods have emerged in the fabrication of microlenses, which allow the use of different materials and give greater freedom with regards to the choice of substrates and array patterns, like Drop-on-Demand (DoD) inkjet printing. Here we discuss about the dispensing of liquid crystal by pyro-electrohydrodynamic (pyro-EHD) printing. The pyro-electric effect is here used for the non-contact manipulation of liquid solution in air and at room temperature. The results obtained show the great feasibility in the dispensing process in terms of materials, geometry and optical properties.

Citation Download Citation

Veronica Vespini, Jaromir Behal, Lisa Miccio, Luciano De Sio, Sara Coppola, and Pietro Ferraro "Pyro-electrohydrodynamic printing of liquid crystals", Proc. SPIE 12618, Optical Measurement Systems for Industrial Inspection XIII, 1261831 (15 August 2023); https://doi.org/10.1117/12.2675729

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