Dong Shen

A liquid crystal device-based apparatus for observing optical vortex and manipulating micro-particles

Zhigang Zheng, Duanbin Luo, Dong Shen, Xiaoqian Wang

Abstract In this paper, we disclose a self-developed liquid crystal device-based optical apparatus for undergraduate teaching experiments. Three relevant experiments have been presented through the experiment-based class: the undergraduates learned about light-matter interaction, the photo-patterning of a liquid crystal q-plate and the …

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A liquid crystal geometric phase hyperbolic lens with a positive focal length for arbitrary circularly polarized incidence

Boyuan Li, Xiaoqian Wang, Kean Zhu, Dong Shen et autres

This paper presents the design and experimental validation of a liquid crystal geometric phase hyperbolic lens (LCHL) with positive focal lengths for arbitrary circularly polarized light. Utilizing Pancharatnam-Berry phase modulation, the lens enables isotropic focusing for both left- and right-handed circular polarization. …

Rational Design of a Potent Antimicrobial Peptide Based on the Active Region of a Gecko Cathelicidin

Ying Cai, Xingyu Wang, Tianyu Zhang, Yan An et autres

The emergence of multidrug-resistant (MDR) bacteria presents a significant challenge to public health, increasing the risk of infections that are resistant to current antibiotic treatment. Antimicrobial peptides (AMPs) offer a promising alternative to conventional antibiotics in the prevention of MDR bacterial infections. …

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Tunable holography with independent transflective information channels enabled by interleaved soft materials

Gengcheng He, Peizhi Sun, Songyu Zhang, Xuan Liu et autres

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Ultrabroadband Multichannel Vector Vortex Beams With Versatile Electrically Induced Functionality

Peizhi Sun, Binghui Liu, Yifei Wang, Conglong Yuan et autres

Abstract The emergence of vector vortex beams (VVBs) has opened new avenues for various applications in optics and photonics. However, owing to the formidable phase aberration ascribed to the chromatic dispersion, the generation of VVBs suffers from a limited working spectrum, thus …

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Light Reconfigurable Topological Optical Phase Structure Enabled by a Photoresponsive Chiral System

Xiaoqian Wang, Alwin Tam, Wei‐Qiang Yang, Alexei D. Kiselev et autres

Abstract The ability to establish significant phase modulation at low applied field provides a promising route toward polarization control and wavefront shaping for liquid‐crystal‐based devices. Owing to the polarization‐selective reflectivity of chiral liquid crystals (CLCs), reflective wavefront shaping via geometric phase is …

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Collecting, transporting and sorting micro-particles via the optical slings generated by a liquid crystal q(φ)-plate

Xiaoqian Wang, Mian Wu, Bo Ni, Zenghui Peng et autres

We disclose a transporting/collecting optical sling generated by a liquid crystal geometric phase optical element with spatial variant topological charge, which shows the intriguing repelling/indrawing effect on the micro-particle along the spiral orbit. Two proof-of-concept prototypes, i.e., an optical conveyor and a …

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Tailoring ultra-broadband vector beams via programming the electric field vector of light

Peizhi Sun, Yifei Wang, Conglong Yuan, Shuzhen Jia et autres

With spatially inhomogeneous polarization, vector beam (VB) has created substantial opportunities in both optics and photonics. However, the limited spectral bandwidth of VB generator hinders further advances for higher level of integration and functionality. Here, an innovative approach of programming the electric …

A long-term stable low-viscous self-organized blue phase liquid crystal superstructure with wide operation temperature range

Ping Li, Xiaoqian Wang, Dong Shen, Zhigang Zheng

A long-term stable self-organised cubic blue-phase liquid crystal superstructure at a relatively low temperature down to −20°C was achieved through doping a low-molecular-weight and short-chain diluter [4-pentyl-4ʹ-propyl-1,1ʹ-bi(cyclohexyl)] (5CC3) with low viscosity into liquid crystal host. The prepared sample with the diluter-induced low-viscous …

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9 Light reconfigurable chiral liquid crystal superstructure for dynamic diffraction manipulations

Wenbin Huang, Zhigang Zheng, Dong Shen, Yanqing Lu et autres

Liquid crystal has attracted sufficient attentions in the sciences and industries due to the booming development of liquid crystal display in the recent 20 years. The specific anisotropy and stimuli-responsiveness of liquid crystal enables a wide range applications not only in display …

Cholesteric Soft Matter Molded Helical Photonic Architecture toward Volatility Monitoring of Organic Solvent

Ning Shen, Mengting Hu, Xiaoqian Wang, Peizhi Sun et autres

Volatility monitoring of a tiny amount of organic solvent, which reflects the profound understanding of the micro‐environmental chemical physics effect, plays a significant role in chemical reactions. Common approaches, such as microfluidic technology, undeniably encounter the issue of complicated fabrication or high …

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Reversible On–Off of Chirality and Anisotropy in Patterned Coexistence of Achiral‐Anisotropic and Chiral‐Isotropic Soft Materials

Qinyu Mo, Binghui Liu, Wenbin Huang, Peizhi Sun et autres

Abstract Achieving a coexistence of two or multiple phases of soft matters via a delicate trade‐off of free energy and long‐range order with one another has been inspiring abundant interest on fundamental sciences and engineering. In this work, a stable coexistence of …

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