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Application of Visible/Near-infrared Spectroscopy and Hyperspectral Imaging with Machine Learning for High-Throughput Plant Heavy Metal Stress Phenotyping:A Review

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Plant Phenomics 2023年第4期5卷 657-672页

作者： Yuanning Zhai Lei Zhou Hengnian Qi Pan Gao Chu Zhang School of Information Engineering Huzhou UniversityHuzhou 313000China College of Mechanical and Electronic Engineering Nanjing Forestry UniversityNanjing 210037China College of Information Science and Technology Shihezi UniversityShihezi 832003China

Heavy metal pollution is becoming a prominent stress on plants.Plants contaminated with heavy metals undergo changes in external morphology and internal structure,and heavy metals can accumulate through the food chain,threatening human health.Detecting heavy metal stress on plants quickly,accurately,and nondestructively helps to achieve precise management of plant growth status and accelerate the breeding of heavy metal-resistant plant varieties.Traditional chemical reagent-based detection methods are laborious,destructive,time-consuming,and costly.The internal and external structures of plants can be altered by heavy metal contamination,which can lead to changes in plants'absorption and reflection of light.Visible/near-infrared(V/NIR)spectroscopy can obtain plant spectral information,and hyperspectral imaging(HSI)can obtain spectral and spatial information in simple,speedy,and nondestructive ways.These 2 technologies have been the most widely used high-throughput phenotyping technologies of plants.This review summarizes the application of V/NIR spectroscopy and HSI in plant heavy metal stress phenotype analysis as well as introduces the method of combining spectroscopy with machine learning approaches for high-throughput phenotyping of plant heavy metal stress,including unstressed and stressed identification,stress types identification,stress degrees identification,and heavy metal content estimation.The vegetation indexes,full-range spectra,and feature bands identified by different plant heavy metal stress phenotyping methods are reviewed.The advantages,limitations,challenges,and prospects of V/NIR spectroscopy and HSI for plant heavy metal stress phenotyping are discussed.Further studies are needed to promote the research and application of V/NIR spectroscopy and HSI for plant heavy metal stress phenotyping.

关键词： infrared consuming precise

infrared chemical imaging through non-degenerate two-photon absorption in silicon-based cameras

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Light(Science & Applications) 2020年第1期9卷 813-822页

作者： David Knez Adam M.Hanninen Richard C.Prince Eric O.Potma Dmitry A.Fishman Department of Chemistry University of CaliforniaIrvineCA 92697USA Department of Biomedical Engineering University of CaliforniaIrvineCA 92697USA

Chemical imaging based on mid-infrared(MIR)spectroscopic contrast is an important technique with a myriad of applications,including biomedical imaging and environmental monitoring.Current MIR cameras,however,lack performance and are much less affordable than mature Si-based devices,which operate in the visible and nearinfrared regions.Here,we demonstrate fast MIR chemical imaging through non-degenerate two-photon absorption(NTA)in a standard Si-based charge-coupled device(CCD).We show that wide-field MIR images can be obtained at 100 ms exposure times using picosecond pulse energies of only a few femtojoules per pixel through NTA directly on the CCD chip.Because this on-chip approach does not rely on phase matching,it is alignment-free and does not necessitate complex postprocessing of the images.We emphasize the utility of this technique through chemically selective MIR imaging of polymers and biological samples,including MIR videos of moving targets,physical processes and live nematodes.

关键词： absorption infrared chemical

Oxygen-deficient tungsten oxide nanoflowers for dynamically tunable near-infrared light transmittance of smart windows

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Nano Research 2023年第10期16卷 12165-12172页

作者： Ya Huang Baoshun Wang Pei Lyu Siming Zhao Xueke Wu Shiliang Zhang Run Li Qinyuan Jiang Fei Wang Yanlong Zhao Rufan Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Electrochromic smart windows have attracted much attention in energy-saving buildings because of their ability to selectively modulate visible(VIS)and near-infrared(NIR)light transmittance.As is known,the NIR region accounts for about 50%of the total solar radiation.Therefore,reducing the NIR transmittance of windows will play a crucial role in reducing the energy consumption of buildings.However,for most of the reported electrochromic materials(ECMs)-based windows,it remains a longlasting challenge about how to achieve a low NIR transmittance during the past decades.In this work,we synthesize oxygendeficient tungsten oxide(WO_(3−x))nanoflowers(NFs)by a simple and efficient method that is facile for their mass production.The WO_(3−x)NFs exhibit low NIR transmittance of only 4.11%,0.60%,and 0.19%at 1200,1600,and 1800 nm,respectively,due to the localized surface plasmon resonance(LSPR)effect.Besides,the WO_(3−x)NFs exhibit an excellent dual-band modulating ability for both VIS and NIR light.They are able to operate in three distinct modes,including a bright mode,a cool mode,and a dark mode.Moreover,the WO_(3−x)NFs exhibit a fast bleaching/coloring time(1.54/6.67 s),and excellent cycling stability(97.75%of capacity retention after 4000 s).

关键词： electrochromic tungsten oxide dual-band smart window infrared

infrared fluorescence imaging of infarcted hearts with A@S nanodots

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Nano Research 2019年第4期12卷 749-757页

作者： Dirk H. Ortgies Angel Luis Garcia-Villalon Miriam Granado Sara Amor Emma Martin Rodriguez Harrisson DA Santos Jingke Yao Jorge Rubio-Retama Daniel Jaque Nanobiology Group Instituto Ramon y Cajal de Investigacion Sanitaria IRYCIS Ctra. Colmenar km. 9.100 Madrid 28034 Spain Fluorescence Imaging Group Departamento de Fisica de Materiales - Facultad de Ciencias Universidad Autonoma de Madrid C/ Francisco Tomas y Valiente 7 Madrid 28049 Spain Fluorescence Imaging Group Departamento de Fisiologia - Facultad de Medicina Avda. Arzobispo Morcillo 2 Universidad Autonoma de Madrid Madrid 28029 Spain Fluorescence Imaging Group Departamento de Fisica Aplicada - Facultad de Ciencias Universidad Autonoma de Madrid C/ Francisco Tomas y Valiente 7 Madrid 28049 Spain Grupo de Nano-Fotonica e Imagens Instituto de Fisica Universidade Federal de Alagoas Maceio-AL 57072-900 Brazil Departamento de Quimica Fisica en Ciencias Farmaceuticas Facultad de Farmacia Plaza de Ramon y Cajal s/n Universidad Complutense de Madrid Madrid 28040 Spain

Ag2S nano dots have already bee n dem onstrated as promisi ng n ear-i nfrared (NIR-II, 1.0-1.45 pm) emitting nan oprobes with low toxicity, high penetration and high resolution for in vivo imaging of, for example, tumors and vasculature. In this work, we have systematically investigated the pote ntial applicati on of function alized Ag2S nano dots for accurate imaging of damaged myocardium tissues after a myocardial in farction in duced by either partial or global ischemia. Ag2S nano dots surface-function alized with the an giote nsin II peptide (ATI I) have show n over 10-fold enhanced binding efficiency to damaged tissues than non-specifically (PEG) functionalized Ag2S nanodots due to their interaction with the upregulated angiotensin II receptor type I (AT1R). It is demonstrated how the NIR-II images generated by ATII-functionalized Ag2S nanodots contain valuable information about the location and extension of damaged tissue in the myocardium allowing for a proper identification of the occluded artery as well as an in direct evaluati on of the damage level. The pote ntial applicati on of Ag2S nano dots in the n ear future for in vivo imaging of myocardial infarction was also corroborated by performing proof of concept whole body imaging experiments.

关键词： infrared imaging myocardial infarct Ag2S nanodots biological windows Langendorff heart

infrared avalanche photodiodes from bulk to 2D materials

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Light(Science & Applications) 2023年第10期12卷 2027-2052页

作者： Piotr Martyniuk Peng Wang Antoni Rogalski Yue Gu Ruiqi Jiang Fang Wang Weida Hu Institute of Applied Physics Military University of Technology2 Kaliskiego Street00-908WarsawPoland State Key Laboratory of infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences500 Yu-Tian RoadShanghaiChina

Avalanche photodiodes (APDs) have drawn huge interest in recent years and have been extensively used in a range of fields including the most important one—optical communication systems due to their time responses and high sensitivities. This article shows the evolution and the recent development of A^(Ⅲ)B^(Ⅴ), A^(Ⅱ)B^(Ⅵ), and potential alternatives to formerly mentioned—“third wave” superlattices (SL) and two-dimensional (2D) materials infrared (IR) APDs. In the beginning, the APDs fundamental operating principle is demonstrated together with progress in architecture. It is shown that the APDs evolution has moved the device’s performance towards higher bandwidths, lower noise, and higher gain-bandwidth products. The material properties to reach both high gain and low excess noise for devices operating in different wavelength ranges were also considered showing the future progress and the research direction. More attention was paid to advances in A^(Ⅲ)B^(Ⅴ) APDs, such as AlInAsSb, which may be used in future optical communications, type-Ⅱ superlattice (T2SLs, “Ga-based” and “Ga-free”), and 2D materials-based IR APDs. The latter—atomically thin 2D materials exhibit huge potential in APDs and could be considered as an alternative material to the well-known, sophisticated, and developed A^(Ⅲ)B^(Ⅴ) APD technologies to include single-photon detection mode. That is related to the fact that conventional bulk materials APDs’ performance is restricted by reasonably high dark currents. One approach to resolve that problem seems to be implementing low-dimensional materials and structures as the APDs’ active regions. The Schottky barrier and atomic level thicknesses lead to the 2D APD dark current significant suppression. What is more, APDs can operate within visible (VIS), near-infrared (NIR)/mid-wavelength infrared range (MWIR), with a responsivity ~80 A/W, external quantum efficiency ~24.8%, gain ~10^(5) for MWIR [wavelength, λ = 4 μm, temperature, T = 10–180 K, Black Phosphorous (BP)/InSe APD]. It is believed that the 2D

关键词： infrared noise mentioned

infrared Radiance Simulation and Application under Cloudy Sky Conditions Based on HIRTM

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Journal of Electronic Science and Technology 2019年第2期17卷 161-170页

作者： Jian-Hua Qu Jun-Jie Yan Mao-Nong Ran Huayun Shinetek Company China Meteorological Administration

An algorithm based on hyperspectral infrared cloudy radiative transfer model (HIRTM) is introduced and a simulation method for infrared image of the generation geostationary meteorological satellite is proposed. Based on the parameters from weather research and forecast (WRF), such as the water content, atmospheric temperature, and humidity profile, the simulation data for the advanced Himawari imager (AHI) infrared radiative (IR) channels of Himawari-8 are obtained. Simulated results based on HIRTM agree well with the observed data. Further, the movement, development, and change of the cloud are well predicated. And the simulation of IR cloud image for the weather forecast has been obtained. This paper provides an improved method for evaluation and improvement of regional numerical model for weather forecast.

关键词： Hyperspectral infrared cloudy radiative transfer model (HIRTM) regional numerical model satellite cloud image

Progressive Fusion Network Based on infrared Light Field Equipment for infrared Image Enhancement

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IEEE/CAA Journal of Automatica Sinica 2022年第9期9卷 1687-1690页

作者： Yong Ma Xinya Wang Wenjing Gao You Du Jun Huang Fan Fan the Electronic Information School Wuhan UniversityWuhan 430072China

Dear Editor,3×3 infrared imaging,generally,of low quality,plays an important role in security surveillance and target detection.In this letter,we improve the quality of infrared images by combining both hardware and software.To this end,an infrared light field imaging enhancement system is built for the first time,including a infrared light field imaging device,a large-scale infrared light field dataset(IRLF-WHU),and a progressive fusion network for infrared image enhancement(IR-PFNet).

关键词： hardware infrared Image

NormFuse: infrared and Visible Image Fusion With Pixel-Adaptive Normalization

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IEEE/CAA Journal of Automatica Sinica 2022年第12期9卷 2190-2192页

作者： Quan Kong Huabing Zhou Yuntao Wu School of Art and Design and School of Computer Science and Engineering Artificial Intelligence Wuhan Institute of TechnologyWuhan 430205China School of Computer Science and Engineering Artificial Intelligence and Hubei Key Laboratory of Intelligent Robot Wuhan Institute of TechnologyWuhan 430205China

Dear Editor.This letter presents a normalization mechanism to effectively fuse infrared and visible images in an encoder-decoder network.Source images are decomposed into source-invariant structure and sourcespecific detail features.Then,the information of detail features is sufficiently incorporated into the structure features using this normalization mechanism in the decoder,which generates high-contrast fused images with highlighted targets and abundant texture information.Qualitative and quantitative experiments on two challenging datasets demonstrate the superiority of our method over current stateof-the-art methods.

关键词： Image infrared decoder

infrared Indoor Wireless MIMO Communication System Using 1.2GHz OOK Modulation

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China Communications 2019年第5期16卷 62-69页

作者： Hao Du Guoning Xu Academy of Opto-Electronics Chinese Academy of Sciences

The multiple input multiple output(MIMO) systems using serial infrared(SIR),return to zero-inverted(RZI) and on off keying(OOK) modulation were studied. Also, by analyzing experimental results, curve fitting models were established. Three infrared MIMO systems with 2X2, 2X4 and 4X4 MIMO channels using RZI and OOK modulation were designed and tested. Based on the experimental results, evaluations between BER, distance and displacement were discussed.

关键词： infrared communication MIMO system line of sight(LOS) RZI OOK modulation