CELL
·
2025
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IF 42.5
Yuqian Ma,Yunuo Chen,Sheng Wang,Zi-Han Chen,Yuanwei Zhang,Ling Huang,Xinxin Zhang,Fei Yin,Yunxuan Wang,Mingzhu Yang,Zhanjun Li,Kai Huang,Xin Fang,Zishuo Li,Minghong Wang,Wenhui Liu,Jia-Nan Li,Longfei Li,Hang Zhao,Min Wei,Yiming Shi,Rong Liu,Mei Zhang,Jutao Chen,Jiawei Shen,Jianjun Meng,Yupeng Yang,Fan Zhang,Xinglong Gong,Gang Han,Tian Xue
Humans cannot perceive infrared light due to the physical thermodynamic properties of photon-detecting opsins. However, the capability to detect invisible multispectral infrared light with the naked eye is highly desirable. Here, we report wearable near-infrared (NIR) upconversion contact lenses (UCLs) with suitable optical properties, hydrophilicity, flexibility, and biocompatibility. Mice with UCLs could recognize NIR temporal and spatial information and make behavioral decisions. Furthermore, human participants wearing UCLs could discriminate NIR information, including temporal coding and spatial images. Notably, we have developed trichromatic UCLs (tUCLs), allowing humans to distinguish multiple spectra of NIR light, which can function as three primary colors, thereby achieving human NIR spatiotemporal color vision. Our research opens up the potential of wearable polymeric materials for non-invasive NIR vision, assisting humans in perceiving and transmitting temporal, spatial, and color dimensions of NIR light.
研究领域:
生物医学工程
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神经科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
·
2011
·Vol. 12
·期 06
·769-781
·
IF 0.215
ÁKOS ZARÁNDY,CSABA REKECZKY,PÉTER FÖLDESY,ISTVÁN SZATMÁRI
The first CNN technology-based, high performance industrial visual computer called Aladdin is reported. The revolutionary device is the world premier of the ACE4k Cellular Visual Microprocessor (CVM) chip powering an industrial visual computer. One of the most important features of the Aladdin system is the image processing library. The library reduces algorithm development time, provides efficient codes, error free operation in binary, and accurate operation in grayscale nodes. Moreover the library provides an easy way to use the Aladdin system for those who are not familiar with the CNN technology.
研究领域:
计算机视觉
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工业计算
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嵌入式系统
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图像处理
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人工智能
✓ 已验证
DOI
高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Xiuying Liu,Si Kang,Wen Wang,Lijie Zhu,Wei Zhang,Pingping Wang,Zaixi Shu,Yiwei Tang
Histamine is a biogenic amine with various physiological functions. However, excessive consumption of histamine can lead to various symptoms, and pose a threat to human lives. A ratiometric fluorescent test strip for visual detection of histamine was developed based on CB-Ni 2+ @CDs probes. As the concentration of histamine increases, the test strips exhibit a transition in fluorescence signal from yellow-green to blue. The RGB values were extracted from the images, and used for quantitative analysis of histamine. The method had a linear range of 0–1.0 mM, with a detection limit of 0.086 mM. The test strips were employed for the detection of histamine, and the recovery rate was found to be in the range of 88.3% to 104.69%, indicating a high level of accuracy. The uniqueness of the test strips lies in their ability to be produced simply by mixing CB, Ni 2+ on a suitable polyvinyl alcohol/wood cellulose fiber substrate.
研究领域:
生物化学
·
食品安全检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Ke Huang,Rui Dai,Wenqing Deng,Shengjie Guo,Han Deng,Yao Wei,Fuling Zhou,Ying Long,Jun Li,Xin Yuan,Xiaoli Xiong
A novel visual detection method was developed for the determination of zinc (Zn) in whole blood and cells using gold nanoclusters (AuNCs) immobilized paper. The detection of Zn was based on a headspace-solid phase extraction (HS-SPE), visible fluorescence from the AuNCs coated paper was quenched by ZnH 2 generated from hydride generation (HG). The potential mechanism was investigated by using X-ray photoelectron spectroscopy (XPS) and Density Functional Theory (DFT). The selectivity was significantly increased because the zinc hydride was effectively separated from sample matrices by hydride generation. A limit of detection (LOD) of 3 μg L −1 Zn 2+ and a relative standard deviation (RSD, n = 7) of 2% at a concentration of 50 μg L −1 of Zn 2+ were obtained when using a commercial fluorescence spectrophotometer as the detector. In visual detection, as low as 20 μg L −1 of Zn 2+ in biological samples can be easily discriminated from the blank with the naked eye. The proposed method retains several unique advantages, including straightforward, rapid, affordable and equipment-free for visual detection.
研究领域:
分析化学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Fermentation-Basel
·
2023
·Vol. 9
·期 6
·519
·
IF 3.7
Shuyue Fan,Yu Zhang,Yunkui Li
The classification of color is important in the management and evaluation of red wine color. Nevertheless, current reports have not given a sound solution. A novel scheme for the quantitative classification of red wine color from the perspective of micro and macro levels was proposed in this work. The overall color performance of 119 representative red wine samples was visualized and classified into 125 micro-classifications according to the partition of the chromaticity and lightness of the wine color. Considering the evolution of red wine color, quantitative macro-classification of the color of the wine samples was explored, and six macro-classifications were obtained. These few classifications determine the extent of aging and aging potential of colors between different red wines well. The performance of this approach was further verified by another set of 56 red wine samples. This efficient and easy-to-implement approach is expected to be helpful in the digital and visual color management, control, evaluation, comparison, and prediction of red wines.Keywords:wine color classification;wine color evolution;CIELAB;visual representation
研究领域:
食品科学
·
化学计量学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shuaifei Mao,Jiantong Ge,Lingling Zhang,Yannan Dai,Sheng Jiang,Yafei Chen,Chunli Jiang,Chunhua Luo,Bobo Tian,Hechun Lin,Hui Peng,Chun-Gang Duan
The advent of artificial photoelectric synapse devices has attracted considerable attention due to their potential to reshape the landscape of neuromorphic computing. A critical challenge impeding their wider application is the typically short image retention time these devices exhibit. In this study, a strategy is developed to address this obstacle by combining the formation of heterojunction and defect-trapping effects. A Cu 2 ZnSnS 4 (CZTS) film is prepared via low-temperature annealing to form a type II heterojunction with ZnO . The two-terminal device based on this heterojunction shows excellent synaptic functionality. The wide absorption of CZTS film in the visible light spectrum enables the device to achieve a broadband response, which is crucial for realizing the simulation of Pavlov’s associative memory. Its utility in encoding encrypted information is demonstrated through the capability to simulate Morse code. Most importantly, the device exhibits image memory for periods exceeding 1100 s, highlighting its exceptional performance in visual memory retention. These results contribute to the development of CZTS-based photoelectric synaptic devices with broad response characteristics and non-volatile memory capabilities.
研究领域:
材料科学
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神经形态计算
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光电技术
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 23
·3718
·
IF 4.7
Hanting Zou,Tianmeng Lan,Yongwen Jiang,Xiao-Lan Yu,Haibo Yuan
As a crucial stage in the processing of black tea, rolling plays a significant role in both the color transformation and the quality development of the tea. In this process, the production of theaflavins, thearubigins, and theabrownins is a primary factor contributing to the alteration in color of rolled leaves. Herein, tea pigments are selected as the key quality indicators during rolling of black tea, aiming to establish rapid detection methods for them. A machine vision system is employed to extract nine color feature variables from the images of samples subjected to varying rolling times. Then, the tea pigment content in the corresponding samples is determined using a UV-visible spectrophotometer. In the meantime, the correlation between color variables and tea pigments is discussed. Additionally, Z-score and PCA are used to eliminate the magnitude difference and redundant information in original data. Finally, the quantitative prediction models of tea pigments based on the images’ color features are established by using PLSR, SVR, and ELM. The data show that the Z-score–PCA–ELM model has the best prediction effect for tea pigments. The Rp values for the model prediction sets are all over 0.96, and the RPD values are all greater than 3.50. In this study, rapid determination methods for tea pigments during rolling of black tea are established. These methods offer significant technical support for the digital production of black tea.
研究领域:
食品科学
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农业工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2018
·
IF 6.042
Zhenyang Xie,Huilin Ge,Jiayan Du,Tao Duan,Guangcheng Yang,Yi He
We report a visual colorimetric assay for detection of nitramine explosives such as 1,3,5-trinitro-1,3,5-triazinane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX) using a smartphone. This assay is based on compartmentalizing incompatible tandem reactions in Pickering emulsions. The alkaline hydrolysis of RDX or HMX in one Pickering emulsion produces nitrite ions, which autodiffuse into the other Pickering emulsion to form nitrous acid. It oxidizes the 3,3′,5,5′-tetramethylbenzidine (TMB) to generate yellow TMB diimine. The RGB component change of the optical images is applied to quantitatively determine the RDX and HMX at different reaction temperatures. A distinct color change occurs at RDX and HMX concentrations of 1.2 and 12 μM, respectively. The adjusted intensity increases linearly with the increase of the logarithms of the concentrations of RDX and HMX in the range of 1.2–90 μM and 12–90 μM, respectively. The limits of detection of RDX and HMX are 96 and 110 nM, respectively. Importantly, this assay is employed for the detection of RDX and HMX in real water, proving the applicability of the assay in real-world samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
CELL
·
2019
·
IF 36.216
Yuqian Ma,Jin Bao,Yuanwei Zhang,Zhanjun Li,Xiangyu Zhou,Changlin Wan,Ling Huang,Yang Zhao,Gang Han,Tian Xue
Summary Mammals cannot see light over 700 nm in wavelength. This limitation is due to the physical thermodynamic properties of the photon-detecting opsins. However, the detection of naturally invisible near-infrared (NIR) light is a desirable ability. To break this limitation, we developed ocular injectable photoreceptor-binding upconversion nanoparticles (pbUCNPs). These nanoparticles anchored on retinal photoreceptors as miniature NIR light transducers to create NIR light image vision with negligible side effects. Based on single-photoreceptor recordings, electroretinograms, cortical recordings, and visual behavioral tests, we demonstrated that mice with these nanoantennae could not only perceive NIR light, but also see NIR light patterns. Excitingly, the injected mice were also able to differentiate sophisticated NIR shape patterns. Moreover, the NIR light pattern vision was ambient-daylight compatible and existed in parallel with native daylight vision. This new method will provide unmatched opportunities for a wide variety of emerging bio-integrated nanodevice designs and applications. Video Download : Download video (42MB)
研究领域:
神经科学
·
纳米技术
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生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Linfeng Chen,Xike Tian,Chao Yang,Yong Li,Zhaoxin Zhou,Yanxin Wang,Fang Xiang
A novel ratiometric fluorescence sensor for rapid and on-site visual detection of Cu 2+ was designed and synthesized by integrating yellow-emission rhodamine fluorophore (RL) and red-emission CdTe@SiO 2 QDs. The as-prepared nanohybrid fluorescence sensor shows dual-emissions at 537 nm and 654 nm under a single excitation at 500 nm in the presence of Cu 2+ . Owing to the strong chelating ability of RL toward Cu 2+ , the yellow fluorescence of RL could be selectively enhanced while the red fluorescence of CdTe QDs is almost unchanged, leading to an obvious fluorescence color change from red to yellow, which could be used for visual and ratiometric detection of Cu 2+ . This nanohybrid sensor exhibits excellent selectivity, sensitivity and anti-interference to Cu 2+ detection and the detection limit is as low as 8.4 nM. Additionally, a simple device test strip for rapid and on-site detection of Cu 2+ has been designed by immobilizing the RL-CdTe@SiO 2 QDs on a common filter paper. This simple and effective paper-based sensor has a visual detection limit of 0.5 μM, showing its promising application for on-site and rapid sensing of Cu 2+ in pollution water.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 23
·19620-19625
·
IF 3.289
Simin Lu,Ling Chen,Ping Yang,Katarzyna Matras-Postolek
The detection of catalase associated with various diseases is very important due to the fact that it is frequently downregulated in human cancer tissues. Noble metal nanomaterial-assisted sensors have achieved rapid development for wide applications but few for detecting catalase. Thus, a novel colourimetric strategy has been developed for the selective and rapid visual detection of catalase by using the decelerating etching of gold nanorods (NRs). In the presence of hexadecyltrimethylammonium bromide and SCN−, which can reduce the redox potential of Au(I)/Au (0), Au NRs would be etched by H2O2 along the longitudinal direction. As a consequence, the colour of solutions changed from bluish green to pink accompanied by the localized surface plasmon resonance (LSPR) extinction peak being shifted to short wavelength. In contrast, the etching process would be prohibited in the presence of catalase, and the colour and LSPR extinction peak of Au NRs would remain unchanged. Furthermore, this Au NR based sensor is applied to test paper that could be used in the detection of catalase in real samples. The discussion of the mechanism indicates that such a sensing method has an ideal performance in terms of sensitivity, selectivity, and linearity.
研究领域:
生物化学
·
医学诊断
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 52
·33036-33047
·
IF 3.361
Ying Li,Fei Lu,Qing-zhi Li,Yi-hua Zhou,Jun Qian,Sheng Cao,Chen-yu Wang
Copper ion (Cu2+) plays an important role in the human body because it is beneficial for metabolism. However, an excessive or slight amount of Cu2+ can cause various symptoms. Therefore, it is necessary for human health to realize the trace and visual detection of Cu2+. Referring to traditional fluorescence test papers, the qualitative and semi-quantitative detection of Cu2+ could be realized by a dual-carbon dots (CDs) ratiometric fluorescent paper-based sensor with the advantages of environmental protection, portability and low cost. In this paper, the inkjet-printed test paper with the best mixing ratio of the two CDs has been researched to maximize the spectral energy transfer of ion detection (maximum color gamut expansion). Among them, the preparation method of b-CDs has been improved, increasing the photoluminescence quantum yield (PLQY) to 88.9%. The sensitivity detection limit of the double emission ratio sensor was 0.15 nM in solution, and the human eye can distinguish at least 3 μmol L−1 Cu2+ in the paper-based sensor. Compared with the traditional single-emission sensor, the human eye was more sensitive to the color change of the emission ratio sensor. The results indicate that we not only realized the micro detection of Cu2+ with convenient methods, but also provided a promising strategy for the visual detection of Cu2+.
研究领域:
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）