ADVANCED MATERIALS
·
2021
·Vol. 34
·期 9
·2108408
·
IF 30.849
Xiaobao Xu,Zeyao Han,Yousheng Zou,Junyu Li,Yu Gu,Dawei Hu,Yin He,Jiaxin Liu,Dejian Yu,Fei Cao,Haibo Zeng
Miniaturized multispectral detectors are urgently desired given the unprecedented prosperity of smart optoelectronic chips for integrated functions including communication, imaging, scientific analysis, etc. However, multispectral detectors require complicated prism optics or interference/interferometric filters for spectral recognition, which hampers the miniaturization and their subsequent integration in photonic integrated circuits. In this work, inspired by the advance of computational imaging, optical-component-free miniaturized multispectral detector on 4 mm gradient bandgap MAPbX 3 microwire with a diameter of 30 µm, is reported. With accurate composition engineering, halide ions in MAPbX 3 microwire vary from Cl to I giving in the gradual variation of optical bandgap from 2.96 to 1.68 eV along axis. The sensing units on MAPbX 3 microwire offer the response edge ranging from 450 to 790 nm with the responsivity over 20 mA W −1 , −3dB width over 450 Hz, LDR of ≈60 dB, and a noise current less than ≈1.4 × 10 −12 A Hz −0.5 . As a result, the derived miniaturized detector achieves the function of multispectral sensing and discrimination with spectral resolution of ≈25 nm and mismatch of ≈10 nm. Finally, the proof-of-concept colorful imaging is successfully conducted with the miniaturized multispectral detector to further confirm its application in spectral recognition.
研究领域:
光电技术
·
光子学
·
材料科学
·
成像技术
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Lingyu Han,Fang Ma,Ping He,Qun Zhou,Zhanping Li,Suqin Sun
The characterization of structure of organic salts in complex mixtures has been a difficult problem in analytical chemistry. In the analysis of Scutellariae Radix (SR), the pharmacopoeia of many countries stipulates that the quality control component is baicalin (≥9% by high performance liquid chromatography (HPLC)). The component with highest response in SR was also baicalin detected by liquid chromatography-mass spectrometry (LC-MS). However, in the attenuated total reflection Fourier transform infrared spectroscopy, the carbonyl peak of glucuronic acid of baicalin did not appear in SR. The results of element analysis, time of flight secondary ion mass spectrometry, matrix assisted laser desorption ionization mass spectrometry and solid-state nuclear magnetic resonance all supported the existence of baicalin magnesium salt. Based on this, this study proposes an analysis strategy guided by infrared spectroscopy and combined with multi-spectroscopy techniques to analyze the structure of organic salt components in medicinal plant. It is meaningful for the research of mechanisms, development of new drugs, and quality control.
研究领域:
药学
·
分析化学
·
植物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS
·
2022
·
IF 1.449
Xin-Yan Lu,Yan-Yue Lou,Kai-Li Zhou,Shao-Liang Jiang,Jie-Hua Shi
In this paper, the interacting characteristics of febuxostat (FBST), an inhibitor of xanthine oxidase for treating gout patients with hyperuricemia with calf thymus DNA (ctDNA) was investigated through multi-spectroscopic methodologies combined with theoretical calculation for understanding the interacting mode on ctDNA, affinity with ctDNA, interacting forces, as well as the alteration in the conformation of ctDNA after interacting FBST The experimental results demonstrated that interacting FBST with ctDNA formed 1:1 complex, the association constant was 913 M−1 at 298 K, suggesting the affinity of FBST on ctDNA was very weak, the interacting mode of FBST on ctDNA was groove binding, and it inserted into the minor groove with rich A-T region of ctDNA. Based on the results of the thermodynamic analysis and theoretical calculation, it can be inferred that the dominated interacting forces between FBST and ctDNA were van der Waals forces and hydrogen bond. And, interacting FBST with ctDNA was a spontaneous, enthalpy-driven, and exothermic process because of ΔG0 < 0, ΔH0 < 0, and |ΔH0| > T|ΔS0|. The results of the circular dichroism (CD) measurements indicated the conformation of ctDNA was weakly disturbed after interacting with FBST but still maintained B-conform. The studied results offer significant insight into further clarifying whether it has genotoxicity.
研究领域:
生物化学
·
药物化学
·
分子生物学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Can Zhang,Xueying Fan,Jian-Tang Jiang,Cong Dou,Yuexing Liang,Xueai Li,Zhenjie Guan,Hongbo Xu,Yuan-Xun Gong,Wenzhu Shao,Cheng-Yan Xu,Liang Zhen
Multispectral absorbing materials that can efficiently dissipate waves across the visible, infrared, and microwave regimes have long been pursued for advanced applications in fields such as space exploration, stealth, and camouflage. However, the wide range of incident wavelengths, spanning five orders of magnitude, presents a significant challenge for the practical implementation of multispectral absorbers. Herein, superblack carbon hierarchitectures (SCHs) are designed using a bottom-up approach involving the self-assembly and self-sacrifice of hydrogen-bonded organic frameworks (HOFs), realizing synergistic morphological customization and dielectric gene editing (via carbon nitride like-moieties conjugated with C═C short chains). Through the cross-dimensional coupling action between light-trapping hierarchitecture and robust dielectric loss, superb visible light absorption (>99.6%), high infrared absorption (98.5%/97.5%/99.6% for long-/mid-/short-wavelength infrared regimes), and ultrabroad microwave absorption (effective bandwidth of 8.52 GHz, nearly covering both the X and K u bands) can be simultaneously achieved in monolayer SCHs-based absorbers. Furthermore, the topologically transformed structures of SCHs enable a systematic dissection of the longstanding ambiguity surrounding the geometrical effect, revealing the synergistic influence of fractal dimension and interconnection status of microparticles, particularly in the microwave regime. This work introduces a new paradigm for multispectral absorption and advances the understanding of absorption mechanisms for developing next-generation absorbers.
研究领域:
材料科学
·
光学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Congnan Cen,Jian Chen,Weiqiang Wang,Jie Zhang,Xiangying Yang,Linglin Fu,Yanbo Wang
This study aims to reveal the mechanism of the interaction between folic acid (FA) and egg ovalbumin (OVA) through the method of multi-spectroscopic, molecular docking, and molecular dynamics simulation in order to probe OVA as the possibility of a carrier of unstable vitamins. The results of the fluorescence spectra indicated a static quenching in the OVA-FA with a strong affinity of 6.998 × 10 4 M −1 . At the same time, the complex formed by FA and OVA has changed the microenvironment. The measurement results of circular dichroism and particle size showed that FA and OVA gradually formed larger particles without changed the secondary structure of the protein. In addition, the results of molecular simulations indicated that the interaction between OVA and FA is mainly stabilized by strong hydrophobic and hydrogen bonds. This research was expanded the application prospect of dietary protein OVA as a transportation and protection system of vitamin substances.
研究领域:
食品科学
·
生物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Jing Jiang,Huiling Jiang,Ying Xu,Mei Chen,Lunhong Ai
Solar-driven interfacial water evaporation has emerged as a promising approach for green and sustainable production of clean water to alleviate freshwater shortage, especially in remote and arid regions. However, limited photothermal conversion efficiency and poor water transport remain challenges to achieve highly efficient solar water evaporation. In this study, we propose a facile strategy to construct a novel Janus photothermal membrane by combining highly hydrophobic nitrogen-doped carbon nanotubes encapsulating cobalt nanoparticles (Co@C/NCNT) with a hydrophilic nylon membrane, which enables simultaneous realization of asymmetric surface wettability and multiple optical absorption pathways. The as-fabricated Janus Co@C/NCNT evaporator achieves a high solar water evaporation rate of 1.55 kg m −2 h −1 and an evaporation efficiency of 89.7% under one sun irradiation, which are well maintained after 10 cycles. Meanwhile, the Janus evaporator can be used for practical purification of various simulated wastewater, such as dyeing sewage and heavy metal wastewater, with high rejection efficiency and long-term stability. This Janus evaporator design provides an efficient, low-cost solar water evaporation system for potential water purification .
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Leilei Liang,Ruoling Yu,Samuel Jun Hoong Ong,Yi Yang,Baoshan Zhang,Guangbin Ji,Zhichuan J. Xu
Mechano-optical systems with on-demand adaptability and a broad spectrum from the visible to microwave are critical for complex multiband electromagnetic (EM) applications. Most existing material systems merely have dynamic optical or microwave tunability because their EM wave response is strongly wavelength-dependent. Inspired by cephalopod skin, we develop an adaptive multispectral mechano-optical system based on bilayer acrylic dielectric elastomer (ADE)/silver nanowire (AgNW) films, which reconfigures the surface morphology between wrinkles and cracks via mechanical contraction and stretching. Such morphological evolution regulates the direct transmission/reflection and scattering behavior of visible–infrared light and simultaneously alters the conductive network in a AgNW film to influence its microwave characteristics. The designed system features switching between visible–infrared–microwave transparency and opacity, continuous regulation, wide spectral window (0.38–15.5 μm and 24,200–36,600 μm), excellent recyclability (500 times), and rapid response time (<1 s). These grant the system great potential as platforms for various promising applications such as smart windows, switchable EM devices, dynamic thermal management, adaptive visual stealth, and human motion detection.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
PubMed
高影响因子
Food Analytical Methods
·
2015
·Vol. 9
·期 5
·1180-1187
·
IF 1.956
Ma Fei,Qin Hao,Zhou Cunliu,Wang Xia,Chen Conggui,Zheng Lei
The feasibility of using multispectral imaging (MSI) technique (405–970 nm) for predicting iron porphyrin (IP) content in pork was assessed. Based on nine feature wavelengths identified by successive projections algorithm (SPA), a partial least squares regression (PLSR) calibration model was established, leading to a determination coefficient ( R
2 ) of 0.996 for the prediction set. Visualization of IP content in each pixel of the multispectral images using the prediction model offers an effective way to monitor the distribution and real-time evolution of IP content during the manufacturing process. The results revealed the potentiality of MSI technique combined with PLSR calibration analysis as a rapid and non-destructive evaluation method of IP content for the agri-food industry.
研究领域:
食品科学
·
生物化学
·
农业工程
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2014
·
IF 3.259
Yang Shu,Weiwei Xue,Xiaoying Xu,Zhimin Jia,Xiaojun Yao,Shuwen Liu,Lihong Liu
Overconsumption of erucic acid has been shown to cause heart damage in animals. The aim of this study is to evaluate the binding behaviour between erucic acid and bovine serum albumin using multi-spectroscopic methods and a molecular docking technique under physiological conditions. We find that erucic acid can quench the intrinsic fluorescence of BSA by dynamic quenching and there is a single class of binding site on BSA. In addition, the thermodynamic functions Δ H and Δ S are 119.14 kJ mol −1 and 488.89 J mol −1 K −1 , indicating that the hydrophobic force is a main acting force. Furthermore, the protein secondary structure changes with an increase in the content of α -helix, measured using synchronous fluorescence, circular dichroism and Fourier transform infrared spectroscopies. The molecular docking results illustrate that erucic acid can bind with the subdomain IIA of the BSA, and hydrogen bonding is also an acting force.
研究领域:
生物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2015
·Vol. 11
·期 42
·5675-5686
·
IF 8.368
Qiao An,Jing Liu,Meng Yu,Jiaxun Wan,Dian Li,Changchun Wang,Chunying Chen,Jia Guo
To overcome traditional barriers in optical imaging and microscopy, optoacoustic-imaging has been changed to combine the accuracy of spectroscopy with the depth resolution of ultrasound, achieving a novel modality with powerful in vivo imaging. However, magnetic resonance imaging provides better spatial and anatomical resolution. Thus, a single hybrid nanoprobe that allows for simultaneous multimodal imaging is significant not only for cutting edge research in imaging science, but also for accurate clinical diagnosis. A core-shell-structured coordination polymer composite microsphere has been designed for in vivo multimodality imaging. It consists of a Fe 3 O 4 nanocluster core, a carbon sandwiched layer, and a carbocyanine-Gd III (Cy-Gd III ) coordination polymer outer shell (Fe 3 O 4 @C@Cy-Gd III ). Folic acid-conjugated poly(ethylene glycol) chains are embedded within the coordination polymer shell to achieve extended circulation and targeted delivery of probe particles in vivo. Control of Fe 3 O 4 core grain sizes results in optimal r 2 relaxivity (224.5 × 10 –3 m −1 s -1 ) for T 2 -weighted magnetic resonance imaging. Cy-Gd III coordination polymers are also regulated to obtain a maximum 25.1% of Cy ligands and 5.2% of Gd III ions for near-infrared fluorescence and T 1 -weighted magnetic resonance imaging, respectively. The results demonstrate their impressive abilities for targeted, multimodal, and reliable imaging.
研究领域:
医学影像学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Yingnan Liu,Ying Bu,Wenhui Zhu,Jianrong Li,Xuepeng Li
Heavy metals have long biological half-lives and are therefore a major threat to aquatic organisms, especially fish. Divalent mercury (Hg(II)) is an important form from a toxicological viewpoint. In this paper, we studied the interaction mechanism between large yellow croaker myosin and Hg(II) by multi-spectroscopies and molecular docking. Hg(II) had a positive effect on improving the elasticity of myosin gel, and the constant increase of charge would destroy the gel. Hg(II) caused myosin to aggregate, and the protein's apparent structure rapidly increased in length. The content of α-helix obviously decreased, β-turns and β-sheet increased. The myosin and Hg(II) quenching type was static quenching. Thermodynamic analysis suggested hydrogen bonding and van der Waals forces were the main forces for the combination. The molecular docking further confirmed the mechanism of action. This study provides a theoretical guidance for the preventions and control of marine heavy metals.
研究领域:
食品科学
·
环境毒理学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanophotonics
·
2024
·Vol. 13
·期 17
·3165-3174
·
IF 6.5
Zhen Meng,Dongqing Liu,Yongqiang Pang,Jiafu Wang,Tianwen Liu,Yan Jia,Haifeng Cheng
The demand for advanced camouflage technology is increasing in modern military warfare. Multispectral compatibility and adaptive capabilities are increasingly desired features in camouflage materials. However, due to the strong wavelength dependence and limited tunability of electromagnetic wave responses, achieving simultaneous multispectral compatibility and adaptive capability in a single structure or device remains a challenge. By integrating coding metamaterials with infrared (IR) electrochromic devices, we demonstrate a highly integrated multispectral metal-based electro-optical metadevice. The fabricated metadevices enable the reversible tunability of IR emissivity (0.58 at 3–5 µm, 0.50 at 7.5–13 µm) and wideband microwave scattering reduction (>10 dB at 10–20 GHz). The excellent integration performance is attributed to the remarkable electromagnetic control capabilities of the coding metamaterials in a chessboard-like configuration and the IR electrochromic devices based on metal reversible electrodeposition. Furthermore, the monolithic integrated design with shared barium fluoride substrate and electrodes allows the metadevices to have a simple architecture, and the careful design avoids coupling between functions. Our approach is general enough for the design of various electrochromic devices and metamaterials for multispectral camouflage, offering valuable insights for the development of advanced adaptive multispectral camouflage systems.
研究领域:
材料科学
·
光学工程
·
军事技术
✓ 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）