Featured
-
-
Article
| Open AccessOptofluidic crystallithography for directed growth of single-crystalline halide perovskites
Precise and spatio-temporal control of crystallization kinetics is important but challenging. Here, the authors propose an optical strategy called optofluidic crystallithography to steer the growth of single-crystalline halide perovskites.
- Xue-Guang Chen
- , Linhan Lin
- & Hong-Bo Sun
-
Article
| Open AccessPhotonic-electronic integrated circuit-based coherent LiDAR engine
The researchers showcase a photonic-electronic FMCW LiDAR source composed of a micro-electronic based high-voltage arbitrary waveform generator, a photonic circuit-based tunable Vernier laser with piezoelectric actuators, and an erbium-doped waveguide amplifier.
- Anton Lukashchuk
- , Halil Kerim Yildirim
- & Tobias J. Kippenberg
-
Article
| Open AccessOptics miniaturization strategy for demanding Raman spectroscopy applications
Authors present a centimeter-scale miniaturized Raman spectrometer using cheap nonstabilized laser diodes, densely packed optics, and non-cooled small sensors while the performance is comparable with expensive bulky research-grade Raman systems.
- Oleksii Ilchenko
- , Yurii Pilhun
- & Anja Boisen
-
Article
| Open AccessLarge-volume focus control at 10 MHz refresh rate via fast line-scanning amplitude-encoded scattering-assisted holography
This study presents a wavefront shaping scheme to control optical focus in a large 3D space at the unprecedented rate of 30 MHz with micron-scale precision and random accessibility via reallocation of degrees of freedom in spatiotemporal domain.
- Atsushi Shibukawa
- , Ryota Higuchi
- & Mooseok Jang
-
Article
| Open AccessOne-photon three-dimensional printed fused silica glass with sub-micron features
3D-printed glass holds great potential. However, it is challenging to control both the dimension and the resolution of the printed material. Here, authors present a one-photon 3D printing approach to produce high-performance fused silica glass with sub-micron resolution and millimetric dimensions.
- Ziyong Li
- , Yanwen Jia
- & Xiewen Wen
-
Article
| Open AccessHigh-security learning-based optical encryption assisted by disordered metasurface
In this work, the employment of disordered metasurface as an ultra-stable and actively polarized speckle generator in a passive manner, coupled with a double-secure treatment to the plaintext, enables a highly secure speckle-based cryptosystem.
- Zhipeng Yu
- , Huanhao Li
- & Puxiang Lai
-
Article
| Open AccessDirect space–time manipulation mechanism for spatio-temporal coupling of ultrafast light field
Here the authors propose a mechanism for direct space-time manipulation of ultrafast light field and experimentally demonstrate the generation of a spatiotemporally coupling light spring with a broad topological charge bandwidth.
- Qinggang Lin
- , Fu Feng
- & Xiaocong Yuan
-
Article
| Open AccessAssessing intra- and inter-molecular charge transfer excitations in non-fullerene acceptors using electroabsorption spectroscopy
The performance of Y6-containing donor-acceptor active layers in organic solar cells is highly related to the charge-transfer nature in Y6 aggregates. Here, authors study charge-transfer characteristics of excitations of isolated and aggregated Y6 molecules through electroabsorption spectroscopy.
- Sudhi Mahadevan
- , Taili Liu
- & Sai-Wing Tsang
-
Article
| Open AccessSubwavelength dielectric waveguide for efficient travelling-wave magnetic resonance imaging
Achieving uniform spin excitation, crucial for MRI, is challenging in the electrically large human body at UHF. Here, authors introduce an innovative dielectric waveguide specifically designed for traveling-wave MRI, which enhances homogeneity and efficiency through effective wave manipulation.
- Yang Gao
- , Tong Liu
- & Xiaotong Zhang
-
Article
| Open AccessBroadband angular spectrum differentiation using dielectric metasurfaces
Metasurfaces processing incoming images have been proposed in the context of real space operations. Here, the authors demonstrate mathematical operations, such as differentiation, on the angular spectrum of an image using metasurfaces, which can be used to enhance spectral features of an image.
- Ming Deng
- , Michele Cotrufo
- & Lin Chen
-
Article
| Open AccessFast topographic optical imaging using encoded search focal scan
Quickly acquiring topographical information from a sample remains a challenge in optics. Here, the authors introduce encoded search focal scan, a technique for sub-micrometric imaging of tens of topographies per second based on collecting a reduced set of images.
- Narcís Vilar
- , Roger Artigas
- & Guillem Carles
-
Article
| Open AccessFrequency-selective perovskite photodetector for anti-interference optical communications
Signal transmission without the interference from ambient light is prerequisite for optical communications. Min et al. design an asymmetric 2D-3D-2D perovskite photodetector with frequency-selective photoresponse for real-time high fidelity optical communications under strong light interference.
- Liangliang Min
- , Haoxuan Sun
- & Liang Li
-
Article
| Open AccessSpectral-temporal-spatial customization via modulating multimodal nonlinear pulse propagation
The authors introduce a method for modulating the multimodal nonlinear pulse propagation in fibers by controlled bending, achieving a tunable broadband high-peak-power femtosecond light source that could empower nonlinear imaging and spectroscopy.
- Tong Qiu
- , Honghao Cao
- & Sixian You
-
Article
| Open AccessFully bioresorbable hybrid opto-electronic neural implant system for simultaneous electrophysiological recording and optogenetic stimulation
Bioresorbable neural implants offer a promising solution to the challenges of secondary surgeries required for the removal of implanted devices. Here, the authors introduce a fully bioresorbable flexible hybrid opto-electronic system for simultaneous electrophysiological recording and optogenetic stimulation.
- Myeongki Cho
- , Jeong-Kyu Han
- & Ki Jun Yu
-
Article
| Open AccessNon-Hermitian non-equipartition theory for trapped particles
The authors propose a generalization of the equipartition theorem of thermal physics to account for non-Hermitian trapping forces, relevant for the problems in non-equilibrium open systems and advanced nanotechnology.
- Xiao Li
- , Yongyin Cao
- & Jack Ng
-
Article
| Open AccessHigh-density volumetric super-resolution microscopy
Current approaches for volumetric super-resolution microscopy can yield large and complex PSF spatial footprints. Here, the authors show a super-resolution microscopy approach using a hexagonal microlens array, which offers speed improvements in volumetric imaging compared to other single-molecule methods.
- Sam Daly
- , João Ferreira Fernandes
- & Steven F. Lee
-
Article
| Open AccessProbing molecules in gas cells of subwavelength thickness with high frequency resolution
Using gas cells for spectroscopic studies opens possibility for miniaturized platforms that can be integrated with other optical components. Here the authors demonstrate molecular rovibrational spectroscopy by confining molecules in a cell of subwavelength thickness.
- Guadalupe Garcia Arellano
- , Joao Carlos de Aquino Carvalho
- & Athanasios Laliotis
-
Article
| Open AccessWide-field mid-infrared hyperspectral imaging beyond video rate
Mid-infrared hyperspectral imaging is valuable for sample characterisation but suffers limited scanning rates. The authors develop such an imaging system based on parametric upconversion of supercontinuum illumination in the Fourier plane, enabling a 100-Hz acquisition rate of spectral datacubes.
- Jianan Fang
- , Kun Huang
- & Heping Zeng
-
Article
| Open AccessSingle-pixel p-graded-n junction spectrometers
The miniaturization of spectrometers to a submillimeter-scale footprint opens opportunities for applications in hyperspectral imaging and lab-on-a-chip systems. Here, the authors report a high-performance single-pixel photodetector spectrometer based on the III-V semiconductor p-graded-n junction, featuring a voltage-tunable optical response.
- Jingyi Wang
- , Beibei Pan
- & Baile Chen
-
Article
| Open AccessReconfigurable perovskite X-ray detector for intelligent imaging
In-sensor computing requires detectors with polarity reconfigurability and linear responsivity. Pang et al. report a CsPbBr3 perovskite single crystal X-ray detector for edge extraction imaging with a data compression ratio of 46.4% and classification task with an accuracy of 100%.
- Jincong Pang
- , Haodi Wu
- & Guangda Niu
-
Article
| Open AccessSEMORE: SEgmentation and MORphological fingErprinting by machine learning automates super-resolution data analysis
There is a lack of universal tools to analyse protein assemblies and quantify underlying structures in single-molecule localization microscopy. Here, the authors present SEMORE, a semi-automatic machine learning framework for system- and input-dependent analysis of super-resolution data.
- Steen W. B. Bender
- , Marcus W. Dreisler
- & Nikos S. Hatzakis
-
Article
| Open AccessAll-in-one, all-optical logic gates using liquid metal plasmon nonlinearity
Multifunctional all-optical logic gate (AOLG) with broadband-based massively parallel processing is desirable for high-speed optical processor. Here, authors propose a reconfigurable all-in-one ultra-broadband AOLG with experimentally achieving 9 fundamental Boolean logics in a single configuration.
- Jinlong Xu
- , Chi Zhang
- & Lin Zhou
-
Article
| Open AccessVirtual histological staining of unlabeled autopsy tissue
Conventional staining of post-mortem samples can be affected by several factors, including tissue autolysis. Here, the authors demonstrate a virtual staining tool using a trained neural network to turn autofluorescence images of label-free autopsy tissue into brightfield equivalent images.
- Yuzhu Li
- , Nir Pillar
- & Aydogan Ozcan
-
Article
| Open AccessSwept coded aperture real-time femtophotography
The researchers showcase swept-coded aperture real-time femtophotography—an all-optical single-shot computational imaging modality at up to 156.3 trillion frames per second—video-records transient absorption in a semiconductor and ultrafast demagnetization of a metal alloy.
- Jingdan Liu
- , Miguel Marquez
- & Jinyang Liang
-
Article
| Open AccessNon-orthogonal optical multiplexing empowered by deep learning
Authors showcase that non-orthogonal optical multiplexing can be achieved over a multimode fiber utilizing deep learning, where information encoded in non-orthogonal input channels even with the same polarization, wavelength, and spatial region can be demultiplexed with high accuracy.
- Tuqiang Pan
- , Jianwei Ye
- & Yuwen Qin
-
Article
| Open AccessSelf-supervised dynamic learning for long-term high-fidelity image transmission through unstabilized diffusive media
This work introduces a cutting-edge technique to overcome dynamic scattering challenges in long-distance multimode fiber transmission, achieving >99.9% accuracy for 1024 modes over 1 km, hence promises applications in diverse scattering scenarios.
- Ziwei Li
- , Wei Zhou
- & Qionghai Dai
-
Article
| Open AccessA compressive hyperspectral video imaging system using a single-pixel detector
The authors showcase a video-rate hyperspectral imager based on a single-pixel photodetector that can achieve high-throughput hyperspectral video recording at a low bandwidth. Specifically, they propose a joint spatial-spectral encoding scheme which can encode the scene into highly compressed single-pixel measurements and obtain temporal correlation at the same time.
- Yibo Xu
- , Liyang Lu
- & Kevin F. Kelly
-
Article
| Open AccessIntrinsic dichroism in amorphous and crystalline solids with helical light
Differential absorption of polarized light, called dichroism, does not exist in amorphous solids due to the disordered arrangements of atoms. Here, the authors demonstrate that dichroism is intrinsic to all solids and can be controlled using helical light beams carrying orbital angular momentum.
- Ashish Jain
- , Jean-Luc Bégin
- & Ravi Bhardwaj
-
Article
| Open AccessNeural network enabled nanoplasmonic hydrogen sensors with 100 ppm limit of detection in humid air
Detecting hydrogen gas in humid air is an unresolved challenge of significant importance for the safe implementation of hydrogen (energy) technologies. Here, authors demonstrate how the use of neural networks enables the sensing of hydrogen in highly humid air with a detection limit of 100 ppm.
- David Tomeček
- , Henrik Klein Moberg
- & Christoph Langhammer
-
Article
| Open AccessTwo-edge-resolved three-dimensional non-line-of-sight imaging with an ordinary camera
Ordinary cameras cannot directly see objects hidden around corners. Here, from an ordinary indirect 2D photograph, the authors compute a 3D image of a scene hidden behind a doorway by exploiting two perpendicular edges of the doorway.
- Robinson Czajkowski
- & John Murray-Bruce
-
Article
| Open AccessSpatio-spectral 4D coherent ranging using a flutter-wavelength-swept laser
Solid-state spatio-spectral coherent light detection and ranging system is proposed based on flutter-wavelength-swept laser for real-time four-dimensional coherent imaging over extended measurable distance even in challenging environments.
- Dawoon Jeong
- , Hansol Jang
- & Chang-Seok Kim
-
Article
| Open AccessDetermining intrinsic potentials and validating optical binding forces between colloidal particles using optical tweezers
Understanding the interactions between submicrometer-sized colloidal particles is of interest to scientists in numerous disciplines. Here, the authors use optical tweezers alongside a full image reconstruction technique to investigate these interactions on the nanometer scale.
- Chi Zhang
- , José Muñetón Díaz
- & Frank Scheffold
-
Article
| Open AccessEUV-induced hydrogen desorption as a step towards large-scale silicon quantum device patterning
Scanning tunnelling microscopy-based H desorption lithography is used for atomic-scale patterning of quantum devices in Si, but its time-consuming nature hinders scalability. Here the authors report H desorption from Si(001):H surface using extreme-UV light and explore implications for patterning.
- Procopios Constantinou
- , Taylor J. Z. Stock
- & Steven R. Schofield
-
Article
| Open AccessMiniaturized spectrometer with intrinsic long-term image memory
Recent studies have reported miniaturized spectrometers based on van der Waals heterostructures. Here, the authors demonstrate multifunctional SnS2/ReSe2 heterojunction spectrometers providing photodetection, spectrum reconstruction, spectral imaging, long-term image memory, and signal processing capabilities.
- Gang Wu
- , Mohamed Abid
- & Han-Chun Wu
-
Article
| Open AccessCochaperones convey the energy of ATP hydrolysis for directional action of Hsp90
The precise role of cochaperones and ATP hydrolysis in driving Hsp90’s chaperone cycle is largely unclear. Here, the authors use single-molecule FRET to show that several cochaperones are necessary to establish directionality in Hsp90’s conformational cycle.
- Leonie Vollmar
- , Julia Schimpf
- & Thorsten Hugel
-
Article
| Open AccessScalable integrated two-dimensional Fourier-transform spectrometry
The authors propose and demonstrate a novel integrated spectrometer that measures any arbitrary spectrum with two-dimensional Fourier transform, breaking the scalability limit in chip-scale spectrometry.
- Hongnan Xu
- , Yue Qin
- & Hon Ki Tsang
-
Article
| Open AccessDrone-based displacement measurement of infrastructures utilizing phase information
Drones are an effective and flexible tool for safety assessment of aging infrastructure, especially in locations with challenging accessibility. Here, authors demonstrate a phase-based sampling moiré technique with a drone for measurement of millimeter-scale infrastructural displacement in bridges.
- Shien Ri
- , Jiaxing Ye
- & Norihiko Ogura
-
Article
| Open AccessSingle-cell mapping of lipid metabolites using an infrared probe in human-derived model systems
Current metabolic imaging studies are limited by low resolution and low specificity. Here, the authors present a single-cell metabolic imaging platform to monitor lipid metabolism with high specificity in various human-derived 2D and 3D culture systems.
- Yeran Bai
- , Carolina M. Camargo
- & Kenneth S. Kosik
-
Article
| Open AccessTheory predicts 2D chiral polaritons based on achiral Fabry–Pérot cavities using apparent circular dichroism
2D chiral polaritons are light-matter states with select angular momentum holding technological promise. Here, the authors present the theory of such states, and propose their realisation based on a phenomenon called “apparent circular dichroism”.
- Andrew H. Salij
- , Randall H. Goldsmith
- & Roel Tempelaar
-
Article
| Open AccessAI-driven projection tomography with multicore fibre-optic cell rotation
Conventional optical tomography can have disadvantages, including anisotropic resolution and incomplete imaging of cellular structures. Here, the authors propose an AI-driven 3D cell imaging system with a cell rotator, which offers improved resolution and automated processing.
- Jiawei Sun
- , Bin Yang
- & Juergen W. Czarske
-
Article
| Open AccessDual-wavelength metalens enables Epi-fluorescence detection from single molecules
The requirement for sophisticated objective lenses hinders the miniaturisation of single molecule fluorescence spectroscopy for portable sensing applications. Here, the authors demonstrate a dual-wavelength metalens for real-time monitoring of individual fluorescent nanoparticles.
- Aleksandr Barulin
- , Yeseul Kim
- & Inki Kim
-
Article
| Open AccessRemote transport of high-dimensional orbital angular momentum states and ghost images via spatial-mode-engineered frequency conversion
Remote transport of high-dimensional-encoded photonic states could in principle be achieved via quantum teleportation, but with considerable experimental effort. Here, instead, the authors exploit spatial-mode engineered frequency conversion between a coherent wave packet and a single photon to remotely transfer the HD OAM states, also providing a strategy for quantum imaging.
- Xiaodong Qiu
- , Haoxu Guo
- & Lixiang Chen
-
Comment
| Open AccessExcitonic Complexes in Two-Dimensional Transition Metal Dichalcogenides
The enhanced Coulomb interaction in two dimensions leads to not only tightly bound excitons but also many-particle excitonic complexes: excitons interacting with other quasiparticles, which results in improved and even new exciton properties with better controls. Here, we summarize studies of excitonic complexes in monolayer transition metal dichalcogenides and their moiré heterojunctions, envisioning how to utilize them for exploring quantum many-body physics.
- Xiaotong Chen
- , Zhen Lian
- & Su-Fei Shi
-
Article
| Open AccessComplexEye: a multi-lens array microscope for high-throughput embedded immune cell migration analysis
Video microscopy is key in studying cell migration, but accomplishing this in a high-throughput manner is still challenging. Here, the authors present an array microscope that can track the movements of thousands of individual cells simultaneously, and that can be used for drug screening studies.
- Zülal Cibir
- , Jacqueline Hassel
- & Matthias Gunzer
-
Article
| Open AccessMid-infrared supermirrors with finesse exceeding 400 000
The researchers showcase all-crystalline and hybrid mid-infrared supermirrors with the lowest optical losses ever demonstrated in this wavelength range, representing an unprecedented improvement over any existing mirrors made with any production technology.
- Gar-Wing Truong
- , Lukas W. Perner
- & Garrett D. Cole
-
Article
| Open AccessFluorescence lifetime Hong-Ou-Mandel sensing
Standard techniques for Fluorescence Lifetime Imaging Microscopy are limited by the electronics to 100’s of picoseconds time resolution. Here, the authors show how to use two-photon interference to perform fluorescence lifetime sensing with picosecond-scale resolution.
- Ashley Lyons
- , Vytautas Zickus
- & Daniele Faccio
-
Article
| Open AccessBlazed oblique plane microscopy reveals scale-invariant inference of brain-wide population activity
Recording neuronal activity at cellular resolution across an entire adult vertebrate brain is challenging. Here, the authors develop a blazed oblique plane microscope to perform brain-wide activity measurements in an adult vertebrate at high cellular resolution.
- Maximilian Hoffmann
- , Jörg Henninger
- & Benjamin Judkewitz
-
Article
| Open AccessNanoscale feedback control of six degrees of freedom of a near-sphere
Levitated nanoparticles are a new platform for exploring quantum mechanics at macroscopic scales. The authors realize feedback controls of all external degrees of freedom of a nanoparticle, with one translational degree in the quantum ground state.
- Mitsuyoshi Kamba
- , Ryoga Shimizu
- & Kiyotaka Aikawa
-
Article
| Open AccessOverlapping speckle correlation algorithm for high-resolution imaging and tracking of objects in unknown scattering media
Imaging moving objects within scattering media is important for a wide range of fields but remains challenging in many practical scenarios. Here, the authors present an overlapping speckle correlation algorithm for imaging and tracking particles in unknown media with limited prior sample knowledge.
- Yaoyao Shi
- , Wei Sheng
- & Youwen Liu