Advanced Optical Materials
·
2019
·Vol. 8
·期 4
·1901767
·
IF 7.125
Feng Liu,Hao Bian,Fan Zhang,Qing Yang,Chao Shan,Minjing Li,Xun Hou,Feng Chen
In this work, a 3D IR artificial compound eye (ACE) optical component is fabricated using thermoplastic IR polymer material. The femtosecond laser-assisted wet etching and the 3D nano-imprinting techniques are proposed for fabricating this thin shell multi-aperture component. The prepared component is close-packed with over 1000 high-quality micro-facet-lenslets (ommatidia) on the semispherical thin shell dome with base radius of 2.7 mm and sag height of 2.1 mm, enabling enlarged field of view to 148°. The ommatidia with diameter of 150 µm and numerical aperture of 0.35 are demonstrated to have a practical spatial resolution up to 160 lp mm −1 . IR imaging experiments (both in passive and active scenarios) confirm its outstanding optical properties and uniformity, and demonstrate the probability of thermal target imaging with such component in the near-infrared band. The proposed fabrication strategy shows remarkable efficiency and advantage in massive replication, and such ACE component predicts its potential in emerging applications, such as IR imaging, target tracking, and so on.
研究领域:
光学工程
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材料科学
·
成像技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Ge Mu,Xiaolong Zheng,Yimei Tan,Yanfei Liu,Qun Hao,Kangkang Weng,Xin Tang
Room-temperature operation or high-operation temperature (HOT) is essential for mid-wave infrared (MWIR) optoelectronics devices providing low-cost and compact systems for numerous applications. Colloidal quantum dots (CQDs) have emerged as a rising candidate to enable photodetectors to operate at HOT or room temperature and develop the next-generation infrared focal plane array (FPA) imagers. Here, band-engineered heterojunctions are demonstrated to suppress dark current with well-passivated mercury telluride (HgTe) CQDs enabling room-temperature MWIR imaging by single-pixel scanning and 640 × 512 FPA sensitive thermal imaging above 250 K. As a result, the room-temperature detectivity reaches as high as 1.26 × 10 10 Jones, and the noise equivalent temperature difference ( NETD ) is as good as 25 mK up to 200 K.
研究领域:
材料科学
·
光学工程
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ORGANIC PROCESS RESEARCH & DEVELOPMENT
·
2022
·
IF 3.858
Mengbo Zhang,Yirong Feng,Linjin Lou,Haomiao Zhang,Jingdai Wang,Yongrong Yang
We present a flow strategy to characterize reaction enthalpy and showcase the application in synthesis of alkylaluminoxanes from the fast and exothermic alkylaluminum hydrolysis. Our platform mainly encompasses a three-dimensional printed micromixer and a tubular reactor in an adiabatic vacuum box, aided by a thermal imaging camera to record temperature profiles. The temperature increase at steady state is used to calculate the released heat, which is further decoupled to quantify the reaction enthalpy and enthalpy of mixing. We validate the concept with the classic neutralization reaction between sulfuric acid and sodium hydroxide, with less than 2% deviation from theoretical values. In application, we determine the exothermic reaction enthalpy and the endothermic enthalpy of mixing to be −143.13 and +7.66 kJ/mol for triisobutylaluminum hydrolysis and −164.63 and +5.03 kJ/mol for trimethylaluminum hydrolysis, respectively. The presented platform, on the one hand, yields new insights into the microreactor scale-up for alkylaluminoxane synthesis and, on the other hand, can be readily used to measure reaction enthalpies of other reactions.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2017
·Vol. 35
·期 3
·1700337
·
IF 4.474
Zhuo Li,Zhenglin Li,Lei Sun,Baosheng Du,Yuanlin Wang,Gongyuan Zhao,Dengfeng Yu,Sisi Yang,Ye Sun,Miao Yu
Thermo-chemotherapy combining photothermal therapy (PTT) with chemotherapy has become a potent approach for antitumor treatment. In this study, a multifunctional drug-delivery nanoplatform based on polyethylene glycol (PEG)-modified mesoporous silica-coated bismuth selenide nanoparticles (referred to as Bi 2 Se 3 @mSiO 2 -PEG NPs) is developed for synergistic PTT and chemotherapy with infrared thermal (IRT) imaging of cancer cells. The product shows no/low cytotoxicity, strong near-infrared (NIR) optical absorption, high photothermal conversion capacity, and stability. Utilizing the prominent photothermal effect, high-contrast IRT imaging and efficient photothermal killing effect on cancer cells are achieved upon NIR laser irradiation. Moreover, the successful mesoporous silica coating of the Bi 2 Se 3 @mSiO 2 -PEG NPs cannot only largely improve the stability but also endow the NPs high drug loading capacity. As a proof-of-concept model, doxorubicin (DOX) is successfully loaded into the NPs with rather high loading capacity (≈50.0%) via the nanoprecipitation method. It is found that the DOX-loaded NPs exhibit a bimodal on-demand pH- and NIR-responsive drug release property, and can realize effective intracellular drug delivery for chemotherapy. The synergistic thermo-chemotherapy results in a significantly higher antitumor efficacy than either PTT or chemotherapy alone. The work reveals the great potential of such core–shell NPs as a multifunctional drug-delivery nanosystem for thermo-chemotherapy.
研究领域:
肿瘤学
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纳米医学
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生物材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2021
·
IF 3.196
Fang Huang,Fei Pan,Li Wang,Zhang Xiao,Jinzhao He,Mei Yan,Jia Wang,Weidong Qiu,Mingxue Liu,Haiqing Dong
Citronellol (Cit), a typical component of rose essential oil, has a variety of physiological activities and is widely used in physiotherapy with tourmaline powder (TP). But the reaction mechanism with biomolecules was not concerned. Therefore, the action mechanism of Cit/TP to bovine serum albumin (BSA) was studied through spectroscopic, docking, dynamic simulation and thermal imaging methods. The results suggested that Cit and BSA could bind at site I chiefly under the driving forces of hydrogen bonds and Van der Waals forces, and the endogenous fluorescence quenching mode of BSA was static. Synchronous, three-dimensional fluorescence spectra, UV–vis, FT-IR reflected Cit could affect the microenvironment near tryptophan and promote the aggregation of the protein structure to change the conformation of BSA. The molecular dynamics (MD) simulation confirmed the conformational change of BSA after ligand binding. Besides, the analysis showed that the existence of TP could improve the affinity of Cit-BSA binding. Infrared thermal images proved that Cit and/or TP could improve the radiation temperature of BSA system. In brief, Cit could spontaneously bind to BSA and change the protein conformation, and the presence of TP would affect the binding mode of Cit-BSA. These findings will be beneficial to further research of Cit and TP in physiotherapy.
研究领域:
生物化学
·
药物化学
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生物物理学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xuyan Zhang,Pengfei Cheng,Weiming Song,Shiya Rong,Jieming Huang,Dong Wang,Peter Schaaf,Guofu Zhou,Zhang Zhang,Junming Liu
Solar energy is a promising renewable energy with the potential for the sustainable development of the world. Efficient photo-thermal conversion is essential for harvesting and conversion of solar energy, therefore, the main challenge is the development of efficient and low-cost photothermal conversion materials. Carbon framework can be considered as a candidate but somehow its application potential can be still constrained due to the limited absorption of near-infrared (NIR) light. Herein, we propose a general strategy for preparing two-dimensional (2D) transition metal dichalcogenides nanosheets and three-dimensional (3D) carbon framework composites (2D/3D ReS 2 @C) as a photothermal material, which has an excellent broadband light absorption performance (in the wavelength range from 200 to 2500 nm). A small thermoelectric (TE) module with an area of 4 × 4 cm 2 is integrated with annealed ReS 2 @C as a light absorber for the investigation of photo-thermoelectric conversion. The open-circuit voltage of the assembled device increases clearly under solar illumination and reaches the maximum value of 136.3 mV, which is ∼ five times larger than that without the absorber. In addition, 20 TE modules coated with ReS 2 @C absorber layers are connected in series, which can produce a maximum open-circuit voltage of 2.12 V (∼66.25 V/m 2 ) to light up a red light-emitting diode (LED) under natural sunlight. Moreover, the annealed ReS 2 @C powder demonstrates a rapid and strong photothermal response under NIR light (wavelength ＞800 nm), which indicates a great application potential in photothermal imaging and photothermal cancer therapy.
研究领域:
材料科学
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可再生能源
·
光子学
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热电学
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纳米技术
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Zhang Ting,Chen Yaoyang,Yang Bin,Wang Xiaohong,Zheng Zhengzhi,Wu Jinpu,Lu Tianyu,Sang Jiaojiao,Kang Shijun,Hu Weiqiang,Zhang Weiguo,Ke Yuchao
In the realm of battery separator membranes, polyethylene microporous membranes hold significant promise due to their high density, robust mechanical properties, and eco-friendliness. Thermally-induced phase separation (TIPS) stands out as a crucial technique for fabricating polyolefin microporous membranes. Existing research has predominantly focused on leveraging TIPS technology to enhance the electrochemical performance of such membranes, overlooking a comprehensive grasp of the film formation process within TIPS. This study delves into the detailed TIPS film formation process of a high-density polyethylene (HDPE)/dioctyl phthalate (DOP) film-forming system. Based on experimental findings, there existed a discernible relationship among the blade coating thickness (δ s ), HDPE mass fraction (ω H ), and final film thickness (δ f ). When δ s is determined, δ f exhibits an initial increase followed by a subsequent decrease as ω H increases. Infrared thermal imaging (ITI) technology was employed to in-situ track the location of phase interface in the HDPE/DOP system, revealing that heightened film scraping thickness and increased HDPE content jointly led to a gradual deceleration in the system’s cooling rate. The utilization of a four-parameter model (FPM) to fit the cooling curves of the HDPE/DOP melt blend under 20 °C quenching in air conditions displayed an exceptional degree of conformity (with all regression coefficients exceeding 0.99). Parameter D in FPM was influenced not only by the polymer property but also by ω H and δ f , and our findings revealed that with ω H set at 30% and δ s at 200 μm, parameter D approached a value of 4. The present work advances the current comprehension of the formation process of HDPE TIPS films and furnishes pivotal insights for optimizing the thermodynamics and process variables essential for solidification of HDPE TIPS films in practical applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2024
·
IF 6.6
Xiaoyi Tang,Yijia Liu,Mengxin Zhao,Lei He,Jiahao Guo,Tian Wang,Wei Li,Jiaqi Zhao
Purpose This study aims to broaden the application of nano-contrast agents (NCAs) within the realm of the musculoskeletal system. It aims to introduce novel methods, strategies, and insights for the clinical management of ischemic muscle disorders, encompassing diagnosis, monitoring, evaluation, and therapeutic intervention.Methods We developed a composite encapsulation technique employing O-carboxymethyl chitosan (OCMC) and liposome to encapsulate NCA-containing gold nanorods (GNRs) and perfluoropentane (PFP). This nanoscale contrast agent was thoroughly characterized for its basic physicochemical properties and performance. Its capabilities for in vivo and in vitro ultrasound imaging and photothermal imaging were authenticated, alongside a comprehensive biocompatibility assessment to ascertain its effects on microcirculatory perfusion in skeletal muscle using a murine model of hindlimb ischemia, and its potential to augment blood flow and facilitate recovery.Results The engineered GNR@OCMC-liposome/PFP nanostructure exhibited an average size of 203.18±1.49 nm, characterized by size uniformity, regular morphology, and a good biocompatibility profile. In vitro assessments revealed NCA’s potent photothermal response and its transformation into microbubbles (MBs) under near-infrared (NIR) irradiation, thereby enhancing ultrasonographic visibility. Animal studies demonstrated the nanostructure’s efficacy in photothermal imaging at ischemic loci in mouse hindlimbs, where NIR irradiation induced rapid temperature increases and significantly increased blood circulation.Conclusion The dual-modal ultrasound/photothermal NCA, encapsulating GNR and PFP within a composite shell-core architecture, was synthesized successfully. It demonstrated exceptional stability, biocompatibility, and phase transition efficiency. Importantly, it facilitates the encapsulation of PFP, enabling both enhanced ultrasound imaging and photothermal imaging following NIR light exposure. This advancement provides a critical step towards the integrated diagnosis and treatment of ischemic muscle diseases, signifying a pivotal development in nanomedicine for musculoskeletal therapeutics.
研究领域:
纳米医学
·
肌肉骨骼系统
·
影像学
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治疗学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 5
·2249-2263
·
IF 6.97
Jun Yang,Ben Q. Li,Rongheng Li,Xuesong Mei
Real-time and accurate measurement of three-dimensional (3D) temperature field gradient maps of cells and tissues would provide an effective experimental method for analyzing the coupled correlation between metabolism and heat, as well as exploring the thermodynamic properties of nanoparticles under complex environments. In this work, a new principle of quantum 3D thermal imaging is proposed. The photoluminescence principle of quantum dots is expounded and CdTe QDs are prepared by aqueous phase synthesis. Fluorescence spectral characteristics of QDs at different temperatures are studied. The optimized algorithm of the optical spot double helix point spread function is proposed to improve the imaging, where optimized light energy increased by 27.36%. The design scheme of a quantum 3D thermal imaging system is presented. The measurement range is (−8 mm, +8 mm). The temperature is calculated according to the temperature–heat curve of quantum dots. The double helix point spread function has converted the defocus distance of QDs into the rotation angle of the double optical spot, thereby determining its position. The experimental results reveal that real-time 3D tracking and temperature measurements of quantum dots at the micro–nanoscale are achieved. Overall, the proposed nano-scale 3D quantum thermal imaging system with high-resolution may provide a new research direction and exploration of many frontier fields.
研究领域:
生物物理学
·
纳米医学
·
光学成像
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Kunjie Liu,An Hou,Jiawei Lin,Mingzhen Quan,Yan Xiong,Zhongnan Guo,Jing Zhao,Quanlin Liu
Organic–inorganic metal halides (OIMHs) possess low preparation costs and high photoluminescence quantum yield. Within a specific range, the temperature-dependent nature of OIMHs' luminescent lifetime facilitates temperature sensing and thermal imaging functionalities. In this study, a non-toxic (C 10 H 22 N) 6 SbBr 9 ·H 2 O ([C 10 H 22 N] + is 4-(tert-buty)cyclohexanamine cation) with a 0D structure crystallized in the Pbcn space group is obtained. Under blue light excitation at room temperature, it demonstrates intense broad emission centered at 635 nm. Further investigation into the correlation between temperature and photoluminescence lifetime has unveiled exceptional temperature sensing precision. The relative sensitivities within the range of power system temperature alert 30–70 °C lie between 2.5% and 4.5% K −1 . This matches the typical high-temperature warning threshold for power systems. Moreover, after immersion in water and alcohol, the compound maintains remarkable stability, with multiple heating/cooling cycles confirming its reliability under test temperatures. Additionally, a composite thin-film device composed of (C 10 H 22 N) 6 SbBr 9 ·H 2 O, showcasing its potential as a stable and durable thermal imaging temperature sensing device is fabricated.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zeshuang Kong,Dong Zhang,Jixian Dong,Jiahui Yu,Dafeng Zhang,Junchang Liu,Peiqing Cai,Xipeng Pu
Within the theoretical framework of computational prediction, this study introduces a novel tetrapodal Cd 0.9 Zn 0.1 S/NiB (CZS/NiB) Schottky heterojunction material, which demonstrates exceptional photothermal effects and remarkable photocatalytic properties. Notably, under visible light irradiation for 3 h, the photocatalytic hydrogen evolution activity of CZS/NiB-3 % surpasses that of pure CZS by a factor of 10.52. This outstanding photocatalytic hydrogen production performance stems from the successful construction of the CZS/NiB-3 % Schottky heterojunction with promoted the separation and transfer of photogenerated charge carriers and excellent photothermal effect. Additionally, the synthesized CZS/NiB exhibits high photostability and cycling stability. The favorable photothermal effect of the synthesized photocatalyst was experimentally validated through infrared thermography technology. Through in-depth computational investigations using density functional theory, the pathways of charge transfer in the Schottky heterojunction are validated. This study provides a feasible strategy for research on photocatalytic water splitting for hydrogen evolution.
研究领域:
材料科学
·
能源化学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 30
·10750-10760
·
IF 8.307
Jingge Zhang,Enna Ha,Danyang Li,Luyang Wang,Junqing Hu
Stimulus-responsive ternary chalcogenide nanomaterials are regarded as promising ‘all-in-one’ nanotheranostics agents on account of their tunable band structures and multi-metal intrinsic properties. Herein, ultrasmall AgBiSe2 nanodots are prepared by a simple thermal injection method. It shows a narrow band gap of 0.91 eV and high absorption coefficient in the NIR-II biowindow, resulting in excellent photothermal performance. Under the irradiation of a 1064 nm laser, AgBiSe2 can induce the overexpression of intracellular heat shock protein (Hsp70) and cell apoptosis to inhibit the growth of tumor cells. The strong signal from CT/thermal imaging also provides guidance for tumor diagnosis. Importantly, AgBiSe2 can be rapidly excreted from the body, thus avoiding long term toxicity. This study presents the first biomedical application of AgBiSe2 nanodots in cancer treatment and extends the development of ternary chalcogenide-based semiconductor nanomedicine.
研究领域:
生物材料
·
癌症治疗
·
纳米医学
·
医学影像
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）