Chemical Engineering Journal, Год журнала: 2024, Номер 489, С. 151131 - 151131
Опубликована: Апрель 8, 2024
Язык: Английский
Deleted Journal, Год журнала: 2023, Номер 1(1)
Опубликована: Июль 23, 2023
Abstract Circularly polarized luminescent (CPL) materials have received significant attention in the field of fundamental science recently. These offer substantial advancement technological applications, such as optical data storage, displays, and quantum communication. Various strategies been proposed self‐assembled consisting inorganic, organic, hybrid systems, particularly chiral orientationally ordered soft matter systems (e.g., liquid crystals (LCs) LC polymers). However, developing scientific approaches to achieve pronounced steerable circularly light emission remains challenging. Herein, we present a comprehensive review on recent development CPL based LCs, including thermotropic LCs (cholesteric bent‐core LCs), lyotropic (nanocellulose polyacetylene‐based polymers LC‐based polymers, helical nanofibers, network). In addition, mechanisms, design principles, potential applications these are systematically reviewed. This summarizes with prospect latent challenges, which can strengthen our understanding basic principles provide new insight into progress several fields, chemistry, science, optics, electronics, biology.
Язык: Английский
Процитировано
91
Light Science & Applications, Год журнала: 2024, Номер 13(1)
Опубликована: Янв. 15, 2024
Abstract Holographic 3D display is highly desirable for numerous applications ranging from medical treatments to military affairs. However, it challenging simultaneously achieve large viewing angle and high-fidelity color reconstruction due the intractable constraints of existing technology. Here, we conceptually propose experimentally demonstrate a simple feasible pathway using well-designed liquid crystal grating overcome inevitable chromatic aberration enlarge holographic angle, thus enabling large-viewing-angle display. The use allows performing secondary diffraction modulation on red, green blue reproduced images extending in system. In principle, aberration-free hologram generation mechanism combination with proposed pave way such superior system shows ~50.12°, which about 7 times that traditional single spatial light modulator. This work presents paradigm achieving display, expected provide new wide application
Язык: Английский
Процитировано
69
Advanced Materials, Год журнала: 2023, Номер 35(31)
Опубликована: Апрель 28, 2023
Abstract Structural color can be produced by nanoperiodic dielectric structures using soft materials. Chiral photonic elastomers (CPEs) from elastic chiral liquid crystal molecules self‐organize into a helical nanostructure, and the nanostructural tuned stretching. However, ability to control separation of biomimetic multicolors for practical applications beyond simple uniaxial stretching single‐colored has been limited until now. Here, stretchable CPEs with simultaneous multicolor control, including electrical are presented. By engineering heterogeneous modulus CPEs, separations an initially homogeneous realized. Electrically is investigated hybrid CPE structure on elastomer actuators, multiarrayed binning chameleon‐like e‐skin further developed device applications. Moreover, concealed camouflage switching invisible demonstrated. This systems improves functionality various potential
Язык: Английский
Процитировано
49
Deleted Journal, Год журнала: 2023, Номер 4(3), С. 1 - 1
Опубликована: Янв. 1, 2023
angle holographic 3D display system based
Язык: Английский
Процитировано
47
Advanced Materials, Год журнала: 2023, Номер 36(1)
Опубликована: Ноя. 28, 2023
Abstract The field of metal‐organic frameworks (MOFs) has progressed beyond the design and exploration powdery single‐crystalline materials. A current challenge is fabrication organized superstructures that can harness directional properties individual constituent MOF crystals. To date, progress in methods polycrystalline led to close‐packed structures with defined crystalline orientation. By controlling orientation, pore channels crystals be aligned along specific directions: these systems possess anisotropic including enhanced diffusion directions, preferential orientation guest species, protection functional guests. In this perspective, we discuss status research oriented focusing on directions Three are examined detail: assembly from colloidal solutions, use external fields for alignment particles, heteroepitaxial ceramic‐to‐MOF growth. This perspective aims at promoting inspiring development new protocols preparation channels, enable advanced MOF‐based devices properties.
Язык: Английский
Процитировано
46
eLight, Год журнала: 2024, Номер 4(1)
Опубликована: Март 5, 2024
Abstract Vectorial optics with fine inhomogeneous polarization control are highly desired. Metasurfaces have been captivated a promising candidate, but their static post-fabrication geometry largely limits the dynamic tunability. Liquid crystal (LC) is usually employed as an additional index-changing layer together metasurfaces. Unfortunately, most of reported LCs only impart varying uniform phase on top that from metasurface, which we term “scalar” LC optics. Here, pixelate single-layer to display versatile and tunable vectorial holography, in amplitude could be arbitrarily independently controlled at spatial positions. Furthermore, subtle LC-holography highlights broadband electrically-switchable functionalities. Our holography reveals significant opportunities for advanced cryptography, super-resolution imaging, many other applications.
Язык: Английский
Процитировано
31
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Окт. 9, 2024
Simultaneous manipulation of multiple degrees freedom light lies at the heart photonics. Nonlinear wavefront shaping offers an exceptional way to achieve this goal by converting incident into beams new frequencies with spatially varied phase, amplitude, and angular momenta. Nevertheless, reconfigurable control over structured fields for advanced multimode nonlinear photonics remains a grand challenge. Here, we propose concept geometric phase in emerging ferroelectric nematic fluid, which second-order susceptibility carries spin-dependent nonlinearity phase. A case study photopatterned q-plates demonstrates generation second-harmonic optical vortices spin-locked topological charges using cascaded linear spin-orbit interactions. Furthermore, present dynamic tunability through temperature, electric field, twisted elastic force. The proposed strategy opens avenues photonics, potential applications communications, quantum computing, high-resolution imaging, etc.
Язык: Английский
Процитировано
19
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Май 23, 2024
Abstract Inspired by intriguing color changeable ability of natural animals, the design and fabrication artificial mechanochromic materials capable changing colors upon stretching or pressing have attracted intense scientific interest. Liquid crystal (LC) is a self‐organized soft matter with anisotropic molecular alignment. Due to sensitivity various external stimulations, LC has been considered as an emerging appealing responsive building block construct intelligent advanced devices. Recently, becoming hot topic in multifields from flexible skins visualized sensors smart biomimetic In this review, recent progress LCs comprehensively summarized. Firstly, mechanism functionalities introduced, followed preparation functional based on LCs. Then applications are provided. Finally, conclusion outlooks field given. This overview hoped provide inspiration for scientists engineers multidisciplines including science, elastomers, chemistry, physical science.
Язык: Английский
Процитировано
16
Advanced Functional Materials, Год журнала: 2023, Номер 33(23)
Опубликована: Фев. 28, 2023
Abstract Structural colorful cholesterics show impressive susceptibility to external stimulation, leading applications in electro/mechano‐chromic devices. However, out‐of‐plane actuation of structural actuators based on and the integration with other stimulation remains underdeveloped. Herein, motile humidity sensors are developed using humidity‐responsive cholesteric liquid crystal networks (CLCNs) magnetic composites. The actuator can exhibit synergistic shape morphing color change response humidity, CLCNs as artificial muscles. Through control, sensor be navigated open confined spaces aid friction detect local relative humidity. multi‐stimulation will expand research frontier for spaces.
Язык: Английский
Процитировано
37
Advanced Functional Materials, Год журнала: 2023, Номер 33(38)
Опубликована: Май 30, 2023
Abstract Advances in biomimicry have led to the rise of advanced robotics, posing promising revolutions across a variety fields. Programmable self‐sustained actuation nature, such as human's heart beating, bird's wingbeats, and penguin's waddling, are intriguing inspiring but challenging for device innovation, which hinders emergence autonomous self‐feedback applications, especially optics photonics. Herein, design, fabrication, operation crosslinked liquid crystal actuators described that combine programming microstructures engineering macroscopic shape morphing active The consist twisted nematic molecules with both elastic optical anisotropies, resulting large bending deformations response heat. motions waddling oscillations demonstrated, further contributing achievements dynamic 2D beam steering light field modulation. It is envisioned these performances without requiring turning stimulus on‐off will find applications systems, photonic well self‐governing robotics core feature thermo‐mechanical‐optical transduction.
Язык: Английский
Процитировано
33