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| Open AccessTransparent dynamic infrared emissivity regulators
In this work, authors report a transparent dynamic infrared emissivity modulation mechanism based on reversible injection/extraction of electrons in aluminium-doped zinc oxide nanocrystals and demonstrate it for smart thermal management applications.
- Yan Jia
- , Dongqing Liu
- & Tianwen Liu
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Article
| Open AccessAn X-ray free-electron laser with a highly configurable undulator and integrated chicanes for tailored pulse properties
Since their initial operation, free-electron lasers are regularly upgraded in their performance and parameter control. Here the authors present the first lasing results of the soft X-ray free-electron laser beamline of the Paul Scherrer Institute, demonstrating different modes of operation and polarisation control of the tailored soft X-ray pulses.
- Eduard Prat
- , Andre Al Haddad
- & Tobias Weilbach
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| Open AccessCarrier-envelope phase on-chip scanner and control of laser beams
Measurement and control of the carrier-envelope phase (CEP) is essential for applications of few-cycle laser beams. The authors present a compact on-chip, ambient-air, CEP scanning probe and show a 3D map of spatial changes of CEP and demonstrate CEP control in the focal volume with a spatial light modulator.
- Václav Hanus
- , Beatrix Fehér
- & Péter Dombi
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| Open AccessHandheld snapshot multi-spectral camera at tens-of-megapixel resolution
Current multispectral video cameras can hardly scale up beyond megapixel resolution and do not apply to large-scale scenes. The authors design a tens-ofmegapixel handheld multi-spectral imaging scheme, build a setup achieving 65-megapixel videography of 12 wavebands, and show its wide applications.
- Weihang Zhang
- , Jinli Suo
- & Qionghai Dai
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| Open AccessExciton Superposition across Moiré States in a Semiconducting Moiré Superlattice
The moiré lattice of trilayer WSe2 and monolayer WS2 host interlayer excitons localized at different moiré sites. Using an electric field, the authors tune the superposition between two moiré sites via hybridization with intralayer excitons in WSe2.
- Zhen Lian
- , Dongxue Chen
- & Su-Fei Shi
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Article
| Open AccessDual-comb optomechanical spectroscopy
Spectroscopic gas sensing with high sensitivity and selectivity finds an increasing number of applications. Here, the authors report an approach to ultrasensitive multiplexed gas sensing by integrating dual-comb spectroscopy with cavity optomechanics.
- Xinyi Ren
- , Jin Pan
- & Heping Zeng
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Article
| Open AccessEngineered NIR-II fluorophores with ultralong-distance molecular packing for high-contrast deep lesion identification
To achieve high-contrast in fluorescence imaging of deep tissues is challenging. Here, the authors develop NIR-II fluorescent small molecules with high brightness and emission extending to 1900 nm, enabling in vivo imaging of deep tissues with enhanced signal-to-background ratios.
- Zhe Feng
- , Yuanyuan Li
- & Jun Qian
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Article
| Open AccessMulticolor lifetime imaging and its application to HIV-1 uptake
Multicolor imaging employing genetically-encodable fluorescent proteins permits spatiotemporal live cell imaging of multiple cues. Here, authors use multicolor lifetime imaging to visualize quadruple-labelled human immunodeficiency viruses within cellular contexts.
- Tobias Starling
- , Irene Carlon-Andres
- & Sergi Padilla-Parra
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Article
| Open AccessEnabling low-drift flexible perovskite photodetectors by electrical modulation for wearable health monitoring and weak light imaging
Defects and ion migration in perovskites hinder their potential as active material for flexible photodetectors. Here, the authors provide an electrical field modulation strategy to enhance the operational stability and the signal-to-noise ratio of flexible perovskite photodetectors.
- Yingjie Tang
- , Peng Jin
- & Bowen Zhu
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Article
| Open AccessUltra-wideband optical coherence elastography from acoustic to ultrasonic frequencies
Understanding the mechanical properties of materials is critical in many fields, from soft hydrogels to biological tissues, yet current measurement methods lack the spatial and time resolution to characterize samples with complex structures. Here, the authors show non-invasive elastography technique offering advancements in resolution, sensitivity, and measurement frequencies.
- Xu Feng
- , Guo-Yang Li
- & Seok-Hyun Yun
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Article
| Open AccessGiant room-temperature nonlinearities in a monolayer Janus topological semiconductor
Electronic band topology may be leveraged to enhance nonlinear optical properties in monolayer semiconductors. Here, the authors report giant room-temperature nonlinearity enhancements in Janus transition metal dichalcogenides.
- Jiaojian Shi
- , Haowei Xu
- & Aaron M. Lindenberg
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Article
| Open AccessEGFR-targeted fluorescence molecular imaging for intraoperative margin assessment in oral cancer patients: a phase II trial
By using tumor-specific fluorescent tracers, fluorescence molecular imaging (FMI) can be used to visualize tumor tissues with high specificity. Here the authors report the results of a phase II trial to evaluate the diagnostic accuracy of an EGFR-targeted FMI for intraoperative margin assessment in patients with oral squamous cell carcinoma.
- Jaron G. de Wit
- , Jasper Vonk
- & Max J. H. Witjes
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| Open AccessNon-interferometric stand-alone single-shot holographic camera using reciprocal diffractive imaging
An ideal holographic camera acquires depth information about an object by measuring the light field. Here, the authors present a reference-free single-shot holographic image sensor that freely focuses the image of real-world objects via reciprocal diffractive imaging.
- Jeonghun Oh
- , Herve Hugonnet
- & YongKeun Park
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Article
| Open AccessCorrelating metasurface spectra with a generation-elimination framework
The authors present a generation-elimination framework that correlates the spectra from different frequency bands, where the inaccessible spectra are precisely forecasted without consulting structural information. The spectral correlation will accelerate the unification of all metasurface designs and facilitate versatile applications involving cross-wavelength information correlation.
- Jieting Chen
- , Chao Qian
- & Hongsheng Chen
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| Open AccessRevealing low-loss dielectric near-field modes of hexagonal boron nitride by photoemission electron microscopy
The application of time-resolved photoemission electron microscopy (TR-PEEM) to non-conducting materials is challenging. Here, the authors report the TR-PEEM characterization of near-field dielectric modes and photoemission properties of insulating hexagonal boron nitride structures on indium tin oxide/glass substrates.
- Yaolong Li
- , Pengzuo Jiang
- & Qihuang Gong
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Article
| Open AccessHigh density lithium niobate photonic integrated circuits
Lithium niobate (LN) is difficult to process via dry etching. Here, authors demonstrate the fabrication of deeply etched, tightly confining, low loss LN photonic integrated circuits with losses 4 dB/m using diamond like carbon as a hard mask.
- Zihan Li
- , Rui Ning Wang
- & Tobias J. Kippenberg
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Article
| Open AccessLong operating lifetime mid-infrared LEDs based on black phosphorus
Mid-infrared light emitting diodes (LEDs) based on black phosphorus (BP) have shown promising performance, but they are usually limited by the environmental instability of the material. Here, the authors extrapolate a room-temperature operational lifetime of BP LEDs up to ~ 15,000 h via Al2O3 passivation and nitrogen seal packaging.
- Naoki Higashitarumizu
- , Shogo Tajima
- & Ali Javey
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| Open AccessMachine learning assisted quantum super-resolution microscopy
Quantum super-resolution techniques take advantage of the non-classical nature of the quantum emitters, but are time-consuming. Here, the authors present a machine learning-assisted approach for fast antibunching-based super-resolution imaging, with a 12-fold speed up over the conventional approach
- Zhaxylyk A. Kudyshev
- , Demid Sychev
- & Vladimir M. Shalaev
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Article
| Open AccessOver-coupled resonator for broadband surface enhanced infrared absorption (SEIRA)
Nanoresonator is proven to be an excellent platform for molecular detection, yet a set of them is necessary to identify a molecule fingerprint. Here, the authors utilise low quality resonators with large radiative losses, despite its lower quality factor, to identify molecular absorption spectrum between 5 and 10 μm.
- Laura Paggi
- , Alice Fabas
- & Patrick Bouchon
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| Open AccessScalable trapping of single nanosized extracellular vesicles using plasmonics
Manipulation of nano-sized extracellular vesicles are of significant interest for disease detection, monitoring, and therapeutics, yet it is still challenging to expedite the process. Here, the authors presented geometry-induced electrohydrodynamic tweezers, which enable fast parallel transport and trapping of single vesicle within seconds.
- Chuchuan Hong
- & Justus C. Ndukaife
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| Open AccessHybridization of short-range and long-range charge transfer excited states in multiple resonance emitter
Multi resonance thermally activated delayed fluorescence emitters are the next-generation blue dopants for organic light-emitting diodes. Here, the authors develop two isomeric emitters with hybridized long-range and short-range charge transfer excited states and realize device efficiency of 30.8%.
- Ha Lim Lee
- , Jihoon Kang
- & Jun Yeob Lee
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Article
| Open AccessVan der Waals isotope heterostructures for engineering phonon polariton dispersions
Here, the authors show that van der Waals isotopic heterostructures based on few-layer h10BN and h11BN can be tuned to modulate the energy-momentum dispersions of hyperbolic phonon polaritons, offering an alternative approach to engineer the nanophotonic properties of 2D materials.
- M. Chen
- , Y. Zhong
- & S. Dai
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| Open AccessEnhancing quantum teleportation efficacy with noiseless linear amplification
Continuous-variable quantum networks are easier to implement than discrete-variable ones, but suffer from a lower teleportation fidelity. Here, the authors demonstrate a CV teleportation protocol exploiting heralded noiseless amplification to increase the fidelity, at the expense of probabilistic operation.
- Jie Zhao
- , Hao Jeng
- & Ping Koy Lam
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Article
| Open AccessAtmospheric turbulence strength distribution along a propagation path probed by longitudinally structured optical beams
Knowledge of atmospheric turbulence strength at various distances is critical for the development of effective solutions for turbulence mitigation. Here, authors demonstrate how to probe the distribution of turbulence strength along a propagation path with multiple longitudinally structured optical beams
- Huibin Zhou
- , Xinzhou Su
- & Alan E. Willner
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| Open AccessActive-feedback quantum control of an integrated low-frequency mechanical resonator
Operating macroscopic mechanical resonators in the quantum regime has recently attracted significant interest. Here, the authors demonstrate ground-state cooling of a nanostring mechanical resonator via measurement-based feedback, reaching 0.76 average phonon occupation starting from liquid helium temperature, and 3.5 when starting from liquid nitrogen.
- Jingkun Guo
- , Jin Chang
- & Simon Gröblacher
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Article
| Open AccessSuperscattering emerging from the physics of bound states in the continuum
The scattering of light by small particles plays a central role in a myriad of fields. Here, the authors demonstrate a super dipole resonance that arises when two resonant modes of a small particle interfere, overcoming a widely accepted limitation to the cross section.
- Adrià Canós Valero
- , Hadi K. Shamkhi
- & Alexander S. Shalin
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| Open AccessHarmonic to anharmonic tuning of moiré potential leading to unconventional Stark effect and giant dipolar repulsion in WS2/WSe2 heterobilayer
Here, the authors show the dynamic tuning of the moiré potential in a WS2/WSe2 heterobilayer by gate voltage and optical power, allowing for simultaneous observation of the first and second order Stark shift for the ground state and first excited state, respectively, of the moiré trapped exciton.
- Suman Chatterjee
- , Medha Dandu
- & Kausik Majumdar
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| Open AccessUltrahigh-efficient material informatics inverse design of thermal metamaterials for visible-infrared-compatible camouflage
The progress development of multispectral camouflage technologies has been limited to the choice of materials and structural design. Here, authors propose a material-informatics-based inverse design framework to efficiently design multilayer metamaterials with satisfying visible-infrared camouflage performance.
- Wang Xi
- , Yun-Jo Lee
- & Run Hu
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Article
| Open AccessExtreme transport of light in spheroids of tumor cells
Rouge waves have been observed in a number of complex systems, but not in biological structures. Here, the authors report the observation of optical rouge waves manifesting in tumor-cell spheroids when illuminated by randomly modulated laser beams.
- Davide Pierangeli
- , Giordano Perini
- & Claudio Conti
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| Open AccessAdiabatic topological photonic interfaces
Smooth topological photonic interfaces lead to less localized boundary modes which improves their guiding characteristics in both spin- and valley Hall metasurfaces. The modes become insensitive to the lattice details, showcasing improved bandgap crossing and longer propagation distances.
- Anton Vakulenko
- , Svetlana Kiriushechkina
- & Alexander B. Khanikaev
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| Open AccessQuadrupolar excitons and hybridized interlayer Mott insulator in a trilayer moiré superlattice
The authors observe the signatures of quadrupolar excitons in a WSe2-WS2-WSe2 trilayer moiré superlattice, originating from the hybridization of the WSe2 valence moiré flatbands. They further use electrostatic gating to reveal a hybridized interlayer Mott insulator state, with holes shared between the two WSe2 layers but laterally confined in moiré superlattices.
- Zhen Lian
- , Dongxue Chen
- & Su-Fei Shi
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Article
| Open AccessIncandescent temporal metamaterials
Here the authors employ quantum electrodynamics to formulate thermal emission effects in time-modulated media, resulting in innovative thermal emitters. They show that time modulation induces strong field fluctuations in epsilon-near-zero bodies, enabling narrowband emission across the entire range of wavevectors, from near to far-field regimes.
- J. Enrique Vázquez-Lozano
- & Iñigo Liberal
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| Open AccessHigh-efficiency, flexible and large-area red/green/blue all-inorganic metal halide perovskite quantum wires-based light-emitting diodes
Cao et al. reports highly efficient, flexible, and larger-area Red/Green/Blue perovskite light-emitting diodes based on all-inorganic metal halide perovskite quantum wires arrays fabricated by porous alumina membranes assisted solution method.
- Yang Bryan Cao
- , Daquan Zhang
- & Zhiyong Fan
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Article
| Open AccessHarnessing microcomb-based parallel chaos for random number generation and optical decision making
Previous chaos suffers from limited parallelism for high-speed systems. Here the authors harness chaotic microcombs as parallel chaos, demonstrating low inter-channel correlation and high throughput for random bit generation and optical decision making.
- Bitao Shen
- , Haowen Shu
- & Xingjun Wang
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Article
| Open AccessLocalised surface plasmon resonance inducing cooperative Jahn–Teller effect for crystal phase-change in a nanocrystal
Here the authors demonstrate that semiconductive plasmonic CuS NCs show metastable displacive ion movements due to the cooperative Jahn–Teller effect induced by localised surface plasmon resonance.
- Masanori Sakamoto
- , Masaki Hada
- & Tohru Sato
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Article
| Open AccessAlvarez varifocal X-ray lens
Development of synchroton facilities increases the demand of optics for focusing X-ray beam to achieve diffraction-limited focusing onto samples. Here, the authors demonstrated an X-ray optical element based on visible light Alvarez varifocal lens providing precise performance focusing elements.
- Vishal Dhamgaye
- , David Laundy
- & Kawal Sawhney
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Article
| Open AccessDual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse-code modulation technique
Data security of internet is increasingly more demanding in the current era, yet the traditional electronic approach is limited in speed and efficiency. Here, the authors proposed a dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse-code modulation to mitigate the limitations.
- Chunxue Wang
- , Daming Zhang
- & Teng Fei
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Article
| Open AccessAbsorption-induced transmission in plasma microphotonics
Plasma can act as a tunable medium in electro-optical device. Here the authors demonstrate electrically induced transmission due to change in absorption in a microphotonic device consisting of a plasma-filled microcavity.
- Baheej Bathish
- , Raanan Gad
- & Tal Carmon
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Article
| Open AccessRapid genetic screening with high quality factor metasurfaces
The authors present a high quality factor metasurface that enables sensitive and highly-parallelized detection of biomolecules. Amplification-free detection of gene fragments down to femtomolar levels is demonstrated within 5 minutes, for rapid nucleic acid analysis.
- Jack Hu
- , Fareeha Safir
- & Jennifer A. Dionne
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| Open AccessHybrid topological photonic crystals
Owing to the nonequilibrium nature, photonic topological phenomena can involve multiple band gaps. Here the authors report on the discovery of a class of hybrid topological photonic crystals that host quantum anomalous Hall and valley Hall phases simultaneously.
- Yanan Wang
- , Hai-Xiao Wang
- & Guang-Yu Guo
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Article
| Open AccessμeV electron spectromicroscopy using free-space light
The authors present μeV electron spectromicroscopy, a technique that combines free-space light and electron beams to achieve unmatched spatial and spectral resolution. This approach enables detailed investigation of photonic structures, promising advancements in microscopy and quantum optics.
- Yves Auad
- , Eduardo J. C. Dias
- & Mathieu Kociak
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Article
| Open AccessDeconvolution volumetric additive manufacturing
Volumetric additive manufacturing generally suffers from systematic undercuring of fine features, which limits its application range. Here, authors develop a model to predict print time variation with feature size and propose a deconvolution method, enabling precise fabrication of intricate structures.
- Antony Orth
- , Daniel Webber
- & Chantal Paquet
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Article
| Open AccessOptofluidic memory and self-induced nonlinear optical phase change for reservoir computing in silicon photonics
The authors demonstrate optical nonlinear effect based on light-heat-liquid interaction between the geometry of liquid surface and a photonic waveguide mode. They use the liquid as an optical memory to perform nanoscale reservoir computing.
- Chengkuan Gao
- , Prabhav Gaur
- & Yeshaiahu Fainman
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Article
| Open AccessArbitrary aperture synthesis with nonlocal leaky-wave metasurface antennas
Leak-wave metasurface antennas tailor non-local resonances leveraging judiciously broken spatial symmetries in their design to generate arbitrarily shaped near-field and far-field patterns.
- Gengyu Xu
- , Adam Overvig
- & Andrea Alù
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Article
| Open AccessProbing the symmetry breaking of a light–matter system by an ancillary qubit
Hybrid quantum systems, such as superconducting qubits interacting with microwave photons in resonators, offer a rich platform for exploring fundamental physics. Wang et al. observe parity symmetry breaking in a probe qubit dispersively coupled to a resonator in the deep-strong coupling regime.
- Shuai-Peng Wang
- , Alessandro Ridolfo
- & J. Q. You
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Article
| Open AccessShort-wave infrared cavity resonances in a single GeSn nanowire
Group-IV nanowires hold great promise for building ideal light sources for photonic integrated circuits. This study presents an observation of cavity resonances in a single GeSn nanowire, laying the foundation for realizing group-IV nanowire lasers.
- Youngmin Kim
- , Simone Assali
- & Oussama Moutanabbir
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Article
| Open AccessPhase intensity nanoscope (PINE) opens long-time investigation windows of living matter
The authors present phase intensity nanoscope (PINE), which uses an integrated phase-intensity multilayer thin film to localize randomly distributed nanoprobes and resolve sub-10 nm cellular architectures. They demonstrate dynamic imaging of nanoscopic reorganization over 250 h and find that nanoscale rearrangements emerging into macroscale rearrangements are synchronized.
- Guangjie Cui
- , Yunbo Liu
- & Somin Eunice Lee
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| Open AccessIn-sensor computing using a MoS2 photodetector with programmable spectral responsivity
Here, the authors report the design and realization of an in-sensor computing optoelectronic device with programmable spectral responsivity based on an ensemble of cavity-enhanced MoS2 photodetectors. The device can perform direct analog processing during the light detection process, without the need to computationally reconstruct the entire optical spectra.
- Dohyun Kwak
- , Dmitry K. Polyushkin
- & Thomas Mueller
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| Open AccessRevealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities
The microscopic origin and valley physics of quantum emitters (QEs) in 2D semiconductors are still not fully understood. Here, the authors report an anomalous magneto-optical behaviour of QEs in WSe2 monolayers coupled to chiral plasmonic nanocavities, suggesting the absence of intrinsic valley symmetry of the emitters.
- Longlong Yang
- , Yu Yuan
- & Xiulai Xu