Rapid in-situ calibration of computational micro-spectrometer with few-shot meta-learning DOI Creative Commons

Meichen Yang,

X. Chen,

Xiaowei Wu

et al.

Optics Express, Journal Year: 2024, Volume and Issue: 32(11), P. 19467 - 19467

Published: April 29, 2024

Computational micro-spectrometers comprised of detector arrays and encoding structure arrays, such as on-chip Fabry-Perot (FP) cavity filters, have great potential in many in-situ applications owing to their compact size snapshot imaging ability. Given manufacturing deviation environmental influence are inevitable, easy effective calibration for spectrometer is necessary, especially applications. Currently strategies based on iterative algorithms or neural networks require accurate measurements pixel-level (spectral) functions through monochromator large amounts standard samples. These procedures time-consuming expensive, thereby impeding Meta-learning with few-shot learning ability can address this challenge by incorporating the prior knowledge simulated dataset. In work, we propose a meta-learning algorithm free measuring function samples calibrate micro-spectrometer effectively. Our comprises 16 types FP filters covering wavelength range 550-720 nm. The center each filter type deviates from design up 6 After 15 different color data, average reconstruction error test dataset decreased 7.2 × 10-

Language: Английский

Transient and elusive intermediate states in self‐assembly processes: An overview DOI Creative Commons
Ziyi Zhang,

Ze Bo Hu,

Junfei Xing

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(2)

Published: May 1, 2024

Abstract The transient and elusive intermediate states are the keys in self‐assembly processes, which common phenomena shaping structure, properties, functionalities of assembled materials across many scientific domains. However, understanding about process is always challenging limited. In this review, we focus on these by combining theoretical experimental approaches. By examining a wide variety systems that span from biological to metal–organic nanostructures, review uncovers wealth self‐assembled materials. addition current knowledge, it will identify challenges provide new insight into opportunities for future research.

Language: Английский

Citations

4
Giant Thermosalient Effect in a Molecular Single Crystal: Dynamic Transformations and Mechanistic Insights DOI Creative Commons
Mohammad Afsar Uddin, Raúl Martín, Sergio Gámez‐Valenzuela

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

The exploration of mechanical motion in molecular crystals under external stimuli is great interest because its potential applications diverse fields, such as electronics, actuation, or sensing. Understanding the underlying processes, including phase transitions and structural changes, crucial for exploiting dynamic nature these crystals. Here, we present a novel organic compound,

Language: Английский

Citations

4
Asymmetric optical waveguide in one‐dimensional organic microplate DOI Creative Commons

Ziyi Yuan,

Xiu‐Fen Cheng,

Zejian Li

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Abstract Chiral organic materials have garnered significant interest in nanophononics due to their ability manipulate polarized light and encode optical information. Herein, chiral one‐dimensional (1D) microplates based on benzocyclazine form homochiral crystals that exhibit excellent waveguiding properties. These exhibited highly asymmetric propagation depends the handedness of circularly (CPL). demonstrated selective transmission, with R ‐microplate favouring left‐handed CPL S right‐handed CPL, showcasing distinct loss coefficients for each enantiomer. Multichannel was observed, where intensity varied excitation position. results highlight potential 1D advanced nanophotonic devices, offering chiral‐dependent control over transmission future applications information processing.

Language: Английский

Citations

0
Tunable pure interference colors of 2D titania liquid crystal with ultrasensitive electroresponse DOI Creative Commons
Rui Gong, Siyuan Tian,

Yukun Lei

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(8)

Published: Feb. 19, 2025

Electrochromic effect refers to the electrically tunable coloration of a matter. Emerging see-through color-tunable applications pose synergetic demand on electrochromic device, concurrently having ultralow field driving, operation in transmissive mode, and high-purity interference colors sci-fi perception. However, such an device remains elusive. Herein, we invent electro-interference-color based two-dimensional titania liquid crystals (2D TiO 2 LCs), demonstrating record-high electroresponse sensitivity ~1.5 × 10 −7 square meters per volt among all wide-bandgap media. Consequently, works under electric 6 3 volts meter (three orders magnitude lower than that conventional operates mode with ~85% transparency, displays pure colors. The serves as good example fabricate diverse chromatic conceptually demonstrated smart windows functions privacy protection, energy saving, artistic presentation well transparent display.

Language: Английский

Citations

0
Adaptive Varifocal Lenses Based on Dielectric Elastomer Actuator DOI Creative Commons
S.Z. Li, Lin Liu,

Haoyue Xing

et al.

Photonics, Journal Year: 2025, Volume and Issue: 12(3), P. 227 - 227

Published: March 1, 2025

Optical imaging systems using varifocal lenses have been widely used in many applications over the past several decades, such as machine vision devices, consumer electronic products, and medical instruments. Traditional often consist of multiple solid focal length refractive optical elements. The ability is obtained by dislocating these elements along axis specific distances mechanical driving mechanisms. It makes traditional suffer from bulky dimensions, slow response speed, complicated configuration, discrete magnifications. Adaptive a better choice to address aforementioned limitations lenses. Dielectric elastomer actuators (DEA), which can effectively respond an electric field result shape deformation, develop various adaptive This paper aims give brief review based on DEA. First, this describes basic physical mechanism Second, reviews liquid DEA introduces their material, structure, fabrication process, focusing unique advantages, fast speed compactness. However, despite merits, lens still has challenges environment stability leakage. To challenges, soft proposed, are also reviewed. In addition, other lenses, including metalens, Fresnel lens, microlens array, Alvarez presented. Finally, prospects for development discussed.

Language: Английский

Citations

0
Manipulation of Single Nanowire and its Applications DOI Open Access
Siyuan Tian, Xinman Chen, Baofu Ding

et al.

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract Micro/nano manipulation of single nanowire has emerged as a popular direction study in the field nanotechnology, with promising applications cutting‐edge technologies such device manufacturing, medical treatment, and nanorobotics. The synthesis nanowires controllable length diameter makes them meet various micro/nano demands. As techniques have advanced, including use optical tweezers, electric magnetic fields, mechanical control, several more control methods, they demonstrated unique advantages different application fields. For instance, cell drug precision transport, nanomotors their potential development, biomedicine, manufacturing. However, extension is still its infancy. This review systematically sorts out progress discusses current research status prospects It aims to provide comprehensive reference guidance for future promote innovative technology wide range

Language: Английский

Citations

0
Azopyrazole‐Based Axially Chiral Dopants with High Thermal Stability in Cholesteric Liquid Crystals DOI Open Access
Xu Zhang, Yuqi Tang,

Yu Ma

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Azobenzene‐based chiral photoswitches are widely used as photoresponsive dopants in cholesteric liquid crystals (CLCs) due to their ability dynamically tune supramolecular helices and have attracted considerable attention recent years. However, a challenge for application is the thermal instability of Z ‐isomers, causing photoaddressed images be thermally erased at room temperature within few hours. Here series new binaphthylazopyrazole reported, with good bidirectional photoconversions tunable half‐lives up two months because incorporated pyrazole ring T‐shaped isomer conformation. By co‐doping these switches photoinsensitive dopant S5011 into crystal host E7, CLCs high stability reflective color modulation obtained. Specifically, tuning across entire visible region achieved colorful can retained dark least 1 week. In addition, large helical twisting power variation, handedness inversion under 365 nm light irradiation also observed. These results provide guidance expanding diversity heteroaryl azo demonstrate great potential developing stable RGB colors.

Language: Английский

Citations

0
Soft Matter Photonics: Interplay of Soft Matter and Light DOI
Lingling Ma,

Yang Wei,

Ning Wang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

The light-soft matter interaction and its applications form the foundation of Soft Matter Photonics, here termed "Soft Mattonics", positioning it as fertile ground for developing next-generation photonic technologies. Over past few decades, this rapidly evolving field has achieved significant advancements, leading to successful across a wide range disciplines, including optoelectronics, photonics, information technology, material science, robotics, biomedicine, astronomy. In Perspective, we provide an overview Mattonics, highlighting recent developments in light-controlled soft their light manipulating. Additionally, offer insights into future research directions with emphasis on both foundational practical that will drive continued growth innovation field.

Language: Английский

Citations

0
Acoustic-Magnetic Tunable Liquid Crystal Microlens Arrays for Polarization-Selective Imaging DOI

Zhu Qingqi,

Shuai Wang, Qian Wu

et al.

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Language: Английский

Citations

0
Deterministic Placement of Achiral Emitters in Superchiral Fields for Superior Chiral Photoluminescence DOI
Xiaolin Lü, Yong Yi Tan, Zhiyuan Gao

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Chiral luminescence holds promise for various applications, but achieving strong, pixelated emission with a large dissymmetry factor (glum) on-chip integration remains challenging. Here we address this challenge by optically growing CdS emitters within the superchiral fields of Au spiral metasurfaces. This precise placement enhances emitter-field interaction, yielding chiral photoluminescence glum up to ∼0.5 and an ∼30-fold intensity enhancement. We demonstrate that both excitation wavelength emitter location significantly impact quality, highlighting critical role resonant spatial alignment fields. These findings provide crucial guidelines designing high-performance devices suitable photonic integration.

Language: Английский

Citations

0