Fabrication of Microlens Arrays with Well‐controlled Curvature by Liquid Trapping and Electrohydrodynamic Deformation in Microholes

Li, Xiangming; Ding, Yucheng; Shao, Jinyou; Tian, Hongmiao; Li, Hongzhong

doi:10.1002/adma.201104625

Cited by 46 publications

(53 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lens is one of the most basic optical components, which is widely applied in light convergence and divergence, imaging, photography, optical microscopy, and optical communication . Femtosecond laser microfabrication has been very successful in fabricating various microlens arrays .…”

Section: Functions and Applicationsmentioning

confidence: 99%

A Review of Femtosecond‐Laser‐Induced Underwater Superoleophobic Surfaces

Yong

Chen

Yang

et al. 2018

Adv Materials Inter

101

View full text Add to dashboard Cite

show abstract

Section: Functions and Applicationsmentioning

confidence: 99%

A Review of Femtosecond‐Laser‐Induced Underwater Superoleophobic Surfaces

Yong

Chen

Yang

et al. 2018

Adv Materials Inter

101

View full text Add to dashboard Cite

show abstract

“…Recently alternative methods have been proposed for the fabrication of microlens arrays utilizing the electrohydrodynamic (EHD) patterning technique in case of a liquid crystalline polymer [13]. The EHD phenomenon in microspace has proven to be versatile and straightforward to generate microlens arrays with controllable curvatures [14]- [17], which even perform aspherical geometries such as controllable paraboloids [14], [15] or bifocus properties [16].…”

mentioning

confidence: 99%

Electrohydrodynamic Assembly of Multiscale PDMS Microlens Arrays

Vespini

Gennari

Coppola

et al. 2015

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

In this paper, we introduce an easy multiscale approach for the fabrication of polymer microlens arrays through a self-assembling process driven by the electrohydrodynamic (EHD) pressure. This method represents a simple alternative to the conventional soft lithography techniques. A thin layer of liquid polymer is deposited on a microengineered ferroelectric crystal and can be self-assembled and cross-linked in a single-step process as a consequence of the pyroelectric effect activated by simply heating the substrate. Although the EHD instability induced by the pyroelectric effect was discovered in principle few years ago, here we demonstrate a systematic investigation for fabrication of microlens arrays in a multiscale range (i.e., between 25 to 200 μm diameter) with high degree of uniformity. By controlling the polymer instability driven by EHD, we report on two different microoptical shapes can be obtained spontaneously, i.e., spherical or toroidal. Here, we show how the geometrical properties and the focal length of the lens array are modulated by controlling two appropriate parameters. Such microlenses can be useful also as polymer patterned arrayed microstructures for optical data interconnections, OLEDs efficient light extraction, concentrating light in energy solar cells, imaging and 3-D display solutions, and other photonics applications.

show abstract

“…However, fabrication of high-quality micro-lens with a parabolic shape is extraordinarily difficult and requires sophisticated know-how and clean-room fabrication expertise. 22 To our knowledge, there has been no report on minimization of SAF …”

Section: Introductionmentioning

confidence: 99%