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| Open AccessBroadened quantum critical ground state in a disordered superconducting thin film
The authors present Nernst measurements on a 2D film of amorphous MoxGe1−x, which shows a magnetic-field-induced superconductor-metal-insulator transition. The intermediate metal phase is known as the “anomalous metal” (AM) state. The authors conclude that the AM state originates from broadening of the superconductor-insulator transition.
- Koichiro Ienaga
- , Yutaka Tamoto
- & Satoshi Okuma
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Article
| Open AccessLanthanide luminescence nanothermometer with working wavelength beyond 1500 nm for cerebrovascular temperature imaging in vivo
The strong scattering of biological tissue causes challenges when monitoring temperature changes at the microscale. Here, the authors propose a nanothermometer based on lanthanide luminescence, enabling minimally invasive imaging of the cerebrovascular system of mice at nearly 200 μm resolution.
- Yukai Wu
- , Fang Li
- & Xingjun Zhu
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Article
| Open AccessPhotooxidation triggered ultralong afterglow in carbon nanodots
Biocompatible afterglow materials have potential in imaging applications, but are challenging to prepare. Here the authors report the development of carbon nanodots with near-infrared afterglow, and demonstrate their use in imaging for tumour resection.
- Guang-Song Zheng
- , Cheng-Long Shen
- & Chong-Xin Shan
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Article
| Open AccessNear-field detection of gate-tunable anisotropic plasmon polaritons in black phosphorus at terahertz frequencies
Polaritons in 2D materials offer the possibility to confine and manipulate light in the terahertz (THz) range. Here, the authors report the observation of THz elliptic plasmon polaritons in 2D black phosphorus, showing deep subwavelength light confinement and anisotropic polariton propagation.
- Eva A. A. Pogna
- , Valentino Pistore
- & Miriam S. Vitiello
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Article
| Open AccessMonolithic thin-film lithium niobate broadband spectrometer with one nanometre resolution
A framework to break the inherent trade-off barrier between spectral resolution and operational bandwidth of integrated optical spectrometers is developed and demonstrated on thin-film lithium niobate without sacrificing the compact footprint.
- Giovanni Finco
- , Gaoyuan Li
- & Rachel Grange
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Article
| Open AccessGraphene-integrated mesh electronics with converged multifunctionality for tracking multimodal excitation-contraction dynamics in cardiac microtissues
Tracking electrical and mechanical activity in in-vitro cardiac microtissues is challenging. Here, authors develop tissue-like electronics that can ‘grow’ with the cardiac microtissues and realize the simultaneous tracking of both signals.
- Hongyan Gao
- , Zhien Wang
- & Jun Yao
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Article
| Open AccessSi/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function
Electron spin qubits in SiGe dots have emerged as promising candidates for quantum information processing. Here the authors demonstrate conveyor-mode single electron shuttling in a Si/SiGe quantum dot device spanning the length of 10 micrometres and operated with a small number of controls
- Ran Xue
- , Max Beer
- & Lars R. Schreiber
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Article
| Open AccessHigher order gaps in the renormalized band structure of doubly aligned hBN/bilayer graphene moiré superlattice
In moiré superlattices, a multitude of higher order Bragg gaps and van Hove singularities emerges as the band structure renormalizes. Here, the authors map these gaps uniquely to the recently predicted topological Bragg indices of the underlying supermoiré lattice.
- Mohit Kumar Jat
- , Priya Tiwari
- & Aveek Bid
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Article
| Open AccessAtomically precise engineering of spin–orbit polarons in a kagome magnetic Weyl semimetal
Defect engineering in topological materials is a frontier that promises tunable physical properties with rich applications. Here, the authors demonstrate the atomically precise engineering of vacancies in a topological semimetal, which locally tunes the magnetic properties.
- Hui Chen
- , Yuqing Xing
- & Hong-Jun Gao
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Article
| Open AccessHigh figure-of-merit for ZnO nanostructures by interfacing lowly-oxidized graphene quantum dots
It is crucial to design ZnO with uniform nanoscale features to reduce thermal conductivity while maintaining electrical conduction pathways. Authors realize a high figure-of-merit value of 0.486 at 580 K by interfacing graphene quantum dots with three-dimensional nanostructured ZnO.
- Myungwoo Choi
- , Juyoung An
- & Seokwoo Jeon
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Article
| Open AccessIntragrain impurity annihilation for highly efficient and stable perovskite solar cells
The detrimental effects of intragrain impurity nanoclusters on the efficiency and stability of perovskite solar cells remain unexplored. Here, the authors study the intragrain impurity annihilation by in situ scanning transmission electron microscopy and adopt a laser stimulus to heal such impurity.
- Songhua Cai
- , Zhipeng Li
- & Yuanyuan Zhou
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Article
| Open AccessTriggered contraction of self-assembled micron-scale DNA nanotube rings
Contractile rings are formed from cytoskeletal filaments, specific crosslinkers and motor proteins during cell division. Here, authors form micron-scale contractile DNA rings from DNA nanotubes and synthetic crosslinkers, with both simulations and experiments showing ring contraction without motor proteins, offering a potential first step towards synthetic cell division machinery.
- Maja Illig
- , Kevin Jahnke
- & Kerstin Göpfrich
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Article
| Open AccessUltra-fast switching memristors based on two-dimensional materials
In this work, the authors demonstrate a 2D memristor with high switching speeds of 120 ps and study its dynamic response with 3 ns short voltage pulses using statistical analysis, simulation, and modeling.
- S. S. Teja Nibhanupudi
- , Anupam Roy
- & Sanjay K. Banerjee
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Article
| Open AccessControlled formation of three-dimensional cavities during lateral epitaxial growth
Substrate patterning offers additional degrees of freedom to engineer the structure and function of a semiconductor device. Here, fully-enclosed germanium cavities, with size and position tunable through the initial mask pattern, can be created through an unexpected self-assembly process.
- Yiwen Zhang
- , Baoming Wang
- & Rui-Tao Wen
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Article
| Open AccessPushing the thinness limit of silver films for flexible optoelectronic devices via ion-beam thinning-back process
The use of thin silver films with nanometric thickness for optoelectronic devices is essential for high transparency, flexibility, and electrical properties. Ma et al. report a thinning-back process with a flood ion beam, to further reduce film thickness down to 4.5 nm.
- Dongxu Ma
- , Ming Ji
- & Huigao Duan
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Article
| Open AccessLiquid metals for boosting stability of zeolite catalysts in the conversion of methanol to hydrocarbons
For the methanol-to-hydrocarbons process, coke build can rapidly deactivate the zeolite catalyst. Here the authors show that the addition of liquid metal gallium can reduce coke deposition and increase catalyst lifetime.
- Yong Zhou
- , Sara Santos
- & Vitaly V. Ordomsky
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Article
| Open AccessRegulating ion affinity and dehydration of metal-organic framework sub-nanochannels for high-precision ion separation
Understanding ion transport mechanisms in confined environments is key to achieving efficient membrane-based ion separation. Here, the authors regulate the ion affinity and dehydration in metal-organic framework sub-nanochannels and achieve a high-precise mono-/di-valent cation separation.
- Ri-Jian Mo
- , Shuang Chen
- & Zhong-Qiu Li
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Article
| Open AccessArea-selective atomic layer deposition on 2D monolayer lateral superlattices
Area selective atomic layer deposition (AS-ALD) has been recently proposed as a controlled growth method, but the patterning resolution and selectivity require improvements. Here, the authors report a superlattice-based AS-ALD method to deposit various materials onto 2D MoS2-MoSe2 lateral superlattices, with a minimum half-pitch size of ~ 10 nm.
- Jeongwon Park
- , Seung Jae Kwak
- & Kibum Kang
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Article
| Open AccessMagnetic droplet soliton pairs
A spin torque nano-oscillator consists of a free magnetic layer and a reference magnetic layer. Many works have examined the behaviour of droplet solitons in the free magnetic layer. Here, Jiang et al. extend this to pair of droplet solitons, with one in the free layer and one in the reference layer.
- S. Jiang
- , S. Chung
- & J. Åkerman
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Article
| Open AccessProton-selective coating enables fast-kinetics high-mass-loading cathodes for sustainable zinc batteries
Sluggish Zn2+-dominated Faradic reactions lead to suboptimal charge-storage capacity and durability of aqueous zinc battery cathodes. Here, the authors present a proton-selective interfacial coating strategy that enables high-performance cathodes with fast-kinetics proton-dominated Faradic reactions.
- Quanquan Guo
- , Wei Li
- & Xinliang Feng
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Article
| Open AccessTri-system integration in metal-oxide nanocomposites via in-situ solution-processed method for ultrathin flexible transparent electrodes
Fabricating flexible transparent electrodes with robust operational stability alongside electrical and mechanical properties is challenging. Here, Kim et al. develop ultrathin flexible transparent electrodes using in-situ solution-processing and unveil interface dynamics of the integrated tri-system.
- John Jinwook Kim
- , Kojima Shuji
- & Wallace C. H. Choy
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Article
| Open AccessCholesterol-modified sphingomyelin chimeric lipid bilayer for improved therapeutic delivery
Cholesterol (Chol) transfer from lipid bilayer jeopardizes membrane stability and causes premature payload leakage, yielding suboptimal efficacy. Here, the authors report a Chol-modified sphingomyelin (SM) bilayer via covalently conjugating Chol to SM, which retains Chol condensing ability and improves pharmacokinetics and therapeutic delivery of various drugs in diverse disease animal models.
- Zhiren Wang
- , Wenpan Li
- & Jianqin Lu
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Article
| Open AccessNeuromorphic antennal sensory system
Artificial sensory systems are often limited in structure and functionality. Here, Jiang et al. report a neuromorphic antennal sensory system that achieves spatiotemporal perception of vibrotactile and magnetic stimuli, showcasing biomimetic perceptual intelligence.
- Chengpeng Jiang
- , Honghuan Xu
- & Wentao Xu
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Article
| Open AccessIn situ electrochemical regeneration of nanogap hotspots for continuously reusable ultrathin SERS sensors
SERS is a powerful analytical technique, but achieving reproducibility for continuous analysis a challenge. Here, the authors report a SERS substrate recycling method that enables direct analysis of complex samples without substrate contamination.
- Sarah May Sibug-Torres
- , David-Benjamin Grys
- & Jeremy J. Baumberg
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Article
| Open AccessRectifying artificial nanochannels with multiple interconvertible permeability states
Transmembrane channels have inspired the development of biomimetic channels. Here, the authors present a class of artificial nanochannels based on DNAzyme-functionalized glass nanopipettes to allow for the control of channel permeability.
- Ruocan Qian
- , Mansha Wu
- & Yi Lu
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Article
| Open AccessAn artificial protein modulator reprogramming neuronal protein functions
Direct modulation of protein by artificial catalysts as enzyme mimetics remains hindered by the lack of highly efficient catalytic centers. Here, the authors present the development of artificial protein modulators (APROMs) with protein phosphatase-like characteristics, catalytically reprogram the biological function of α-synuclein.
- Peihua Lin
- , Bo Zhang
- & Daishun Ling
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Article
| Open AccessOptically addressable spin defects coupled to bound states in the continuum metasurfaces
Previous research reported enhanced emission from spin defects in hBN by coupling to optical resonators; however, this approach has limited scalability. Here the authors use a monolithic metasurface featuring quasi bound states fabricated from hBN to enhance photoemission and optical spin-readout efficiency of defects in the same material.
- Luca Sortino
- , Angus Gale
- & Andreas Tittl
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Article
| Open AccessCrystallization of molecular layers produced under confinement onto a surface
Molecules arranged in close proximity to a surface form molecular layers, exhibiting distinct properties. However, the creation of these layers is challenging. Here, the authors present a technique for generating molecular layers through crystallization induced by gas blowing onto a surface.
- Jincheng Tong
- , Nathan de Bruyn
- & Cinzia Casiraghi
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Review Article
| Open AccessHardware implementation of memristor-based artificial neural networks
Memristors hold promise for massively-parallel computing at low power. Aguirre et al. provide a comprehensive protocol of the materials and methods for designing memristive artificial neural networks with the detailed working principles of each building block and the tools for performance evaluation.
- Fernando Aguirre
- , Abu Sebastian
- & Mario Lanza
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Article
| Open AccessPrediction of highly stable 2D carbon allotropes based on azulenoid kekulene
Discovery of 2D materials with useful electronic properties is challenging. Here, the authors use DFT to design a stable semiconducting 2D carbon allotrope for optoelectronic applications that has light charge carriers and unusual secondary bandgap.
- Zhenzhe Zhang
- , Hanh D. M. Pham
- & Rustam Z. Khaliullin
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Article
| Open AccessExtensive photochemical restructuring of molecule-metal surfaces under room light
The nature of the molecule-metal interface is crucial for many technological applications. Here, the authors show that the photostability of the material can be sensitive to room light when coated with a single molecular layer, with implications for devices and processes.
- Chenyang Guo
- , Philip Benzie
- & Jeremy J. Baumberg
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Article
| Open AccessSpatiotemporal control of photochromic upconversion through interfacial energy transfer
Achieving spatiotemporal control of photochromic upconversion from a single lanthanide emitter remains challenging. Here, the authors present a conceptual model enabling such control of Er3+ photochromic upconversion via interfacial energy transfer in a core-shell nanostructure.
- Long Yan
- , Jinshu Huang
- & Bo Zhou
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Article
| Open AccessDynamic control of DNA condensation
Artificial biomolecular condensates are valuable tools to study the design principles of phase separation. Here, the authors demonstrate and characterize a model system of artificial DNA condensates whose kinetic formation and dissolution depends on DNA inputs that activate or deactivate the phase separating DNA subunits.
- Siddharth Agarwal
- , Dino Osmanovic
- & Elisa Franco
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Article
| Open AccessCoherent control of enhanced second-harmonic generation in a plasmonic nanocircuit using a transition metal dichalcogenide monolayer
Here, the authors integrate monolayer MoSe2 with a plasmonic nanocircuit and demonstrate the coherent selective routing of the enhanced nonlinear optical signal emitted by the 2D semiconductor, with routing extinction ratios up to 14.86 dB.
- Pei-Yuan Wu
- , Wei-Qing Lee
- & Chen-Bin Huang
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Article
| Open AccessElectron/infrared-phonon coupling in ABC trilayer graphene
Via Raman and infrared spectroscopy measurements, X. Zan et al. find that rhombohedral ABC trilayer graphene has stronger electron/infrared-phonon coupling than Bernal ABA trilayer graphene.
- Xiaozhou Zan
- , Xiangdong Guo
- & Guangyu Zhang
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Article
| Open AccessFerromagnetism on an atom-thick & extended 2D metal-organic coordination network
Despite having all the ingredients required for the formation of two-dimensional ferromagnetism, achieving such a magnetic state in atomically thin metal-organic coordination networks has proved to be a persistent challenge. Here, Lobo-Checa et al demonstrate 2Dferromagnetism in a self-assembled network, exhibiting coercive fields over 2 Tesla and a Curie temperature of 35K.
- Jorge Lobo-Checa
- , Leyre Hernández-López
- & Fernando Bartolomé
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Article
| Open AccessBoosting exciton mobility approaching Mott-Ioffe-Regel limit in Ruddlesden−Popper perovskites by anchoring the organic cation
Exciton transport in 2D Ruddlesden−Popper perovskite plays a key role for their optoelectronic performance. Here, authors significantly enhance free exciton mobilities in exfoliated thin flakes by anchoring butyl ammonium cation with polymethyl methacrylate, which also improves lattice rigidity.
- Yiyang Gong
- , Shuai Yue
- & Xinfeng Liu
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Article
| Open AccessMesoporous nanoperforators as membranolytic agents via nano- and molecular-scale multi-patterning
Plasma membrane lysis is an effective anticancer strategy that mostly relies on soluble molecular membranolytic agents, while nanomaterial-based membranolytic agents have been unexplored. Herein, the authors report a nano- and molecular-scale multi-patterning strategy for fabricating mesoporous membranolytic nanoperforators with an intrinsic membranolytic activity.
- Yannan Yang
- , Shiwei Chen
- & Chengzhong Yu
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Article
| Open AccessEpitaxy of wafer-scale single-crystal MoS2 monolayer via buffer layer control
2D MoS2 is being intensively investigated as a promising candidate to extend the downscaling of electronic devices. Here, the authors report a buffer-layer-control method for the growth of wafer-scale single-crystalline MoS2 monolayers on industry-compatible sapphire substrates with competitive optical and electronic properties.
- Lu Li
- , Qinqin Wang
- & Guangyu Zhang
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Article
| Open AccessResonant generation of propagating second-harmonic spin waves in nano-waveguides
Spin waves in magnetic nanosystems offer a potential platform for wave-based signal processing and computing, with a variety of advantages compared to optical approaches. Herein, the authors demonstrate resonant phase matched generation of second harmonic spin waves, enabling the generation of short wavelength spin waves that are otherwise difficult to directly excite.
- K. O. Nikolaev
- , S. R. Lake
- & V. E. Demidov
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Article
| Open AccessEngineering surface dipoles on mixed conducting oxides with ultra-thin oxide decoration layers
Improving materials for energy devices relates to an optimisation of their surfaces. Here authors show that surface modification with ultrathin oxide layers allows for a tailoring of the surface dipole and the work function of mixed ionic and electronic conducting oxides.
- Matthäus Siebenhofer
- , Andreas Nenning
- & Markus Kubicek
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Article
| Open AccessEnergy transfer driven brightening of MoS2 by ultrafast polariton relaxation in microcavity MoS2/hBN/WS2 heterostructures
Here, the authors design a microcavity-confined 2D heterojunction to realize the strong coupling among donor exciton, acceptor exciton, and cavity photon mode, leading to an unconventional energy transfer via polariton relaxation with an enhancement factor of ~440.
- Zehua Hu
- , Tanjung Krisnanda
- & Qihua Xiong
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Article
| Open AccessSingle-molecule RNA sizing enables quantitative analysis of alternative transcription termination
The development of RNA technologies demands accurate assessment of transcript size and heterogeneity. Here, authors report a nanopore-based approach to study full-length RNA transcripts at the single-molecule level, identify premature transcription termination and study rolling-circle transcription.
- Gerardo Patiño-Guillén
- , Jovan Pešović
- & Ulrich Felix Keyser
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Article
| Open AccessCreation of a point-of-care therapeutics sensor using protein engineering, electrochemical sensing and electronic integration
Low-cost point-of-care sensors are vital for precision medicine. Here, the authors have repurposed a glucometer for breast cancer therapeutic detection capable of sensing tamoxifen in human blood, utilizing blood glucose to power and amplify the therapeutic signals
- Rong Cai
- , Chiagoziem Ngwadom
- & Caroline M. Ajo-Franklin
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Article
| Open AccessTargeted delivery of Fc-fused PD-L1 for effective management of acute and chronic colitis
Triggering the PD-1/PD-L1 immune checkpoint is an attractive therapeutic approach in inflammatory bowel disease, and PD-L1, conjugated to the Fc part of an immunoglobulin (PD-L1-Fc) has been shown to be effective in mouse models. Here authors show that fusing to reactive oxygen species (ROS)-responsive nanoparticles improves effect of PD-L1-Fc due to targeting to inflammation sites, while systemic toxicity is reduced.
- Xudong Tang
- , Yangyang Shang
- & Lei Chen
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Article
| Open AccessBroadband thermal imaging using meta-optics
Exploring the miniaturization of imaging systems, researchers use inverse-design for broadband meta-optics in the LWIR spectrum. Here, authors achieve a six-fold Strehl ratio improvement in image quality over conventional metalenses using a novel design and computational techniques.
- Luocheng Huang
- , Zheyi Han
- & Arka Majumdar
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Article
| Open AccessMotility of an autonomous protein-based artificial motor that operates via a burnt-bridge principle
Inspired by biology, great progress has been made in creating artificial molecular motors. Here the authors report the synthesis and characterization of the Lawnmower, an autonomous, protein-based artificial molecular motor and show their design is capable of track-guided motion.
- Chapin S. Korosec
- , Ivan N. Unksov
- & Nancy R. Forde
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Article
| Open AccessAnomalously bright single-molecule upconversion electroluminescence
The efficiency of upconversion electroluminescence remains very low for single-molecule emitters. Here, the authors report over one order of magnitude improvement in the emission efficiency via engineering energy-level alignments for triplet relayed upconversion involving only carrier injection.
- Yang Luo
- , Fan-Fang Kong
- & Zhen-Chao Dong
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Article
| Open AccessNon-volatile rippled-assisted optoelectronic array for all-day motion detection and recognition
The authors create a rippled-assisted optoelectronic array (18 × 18 pixels) for the all-day motion detection and recognition, possessing negative and positive optical detection as well as memory and computation capabilities.
- Xingchen Pang
- , Yang Wang
- & Peng Zhou