Advanced Science
·
2017
·
IF 9.034
Su‐Ting Han,Liang Hu,Xiandi Wang,Ye Zhou,Yu‐Jia Zeng,Shuangchen Ruan,Caofeng Pan,Zhengchun Peng
Solution‐processed black phosphorus quantum‐dot‐based resistive random access memory is demonstrated with tunable characteristics, multilevel data storage, and ultrahigh ON/OFF ratio. Effects of the black phosphorous quantum dots layer thickness and the compliance current setting on resistive switching behavior are systematically studied. Our devices can yield a series of SET voltages and current levels, hence having the potential for practical applications in the flexible electronics industry.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
PubMed
高影响因子
Applied Materials Today
·
2024
·
IF 7.2
Lu Wang,Jiazhuang Li,Qiang He,Zimeng Zhang,Dianzhong Wen
Photoelectric memristors have the advantages of highly parallel computing and large-scale interconnection, which provides a promising method for reconfigurable logic operations and greatly promotes the development of new memory computing technology. In this paper, a photoelectric memristor was fabricated using natural gelatin and water-soluble CdSe/ZnS quantum dots with a shell structure. Under light stimulation, the device undergoes photoelectric effects in the dielectric layer, generating electron–hole pairs and causing the device to transition from a high-resistance state to a low-resistance state. Seven nonvolatile logic functions are achieved using three wavelengths of light excitation devices. Compared with traditional electrically controlled memristors, emerging photoelectric memristors are more attractive because they can integrate the advantages of photons and electrons.
研究领域:
材料科学
·
电子工程
·
计算机科学
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产品关联
DOI
高影响因子
Science Advances
·
2021
·Vol. 7
·期 46
·
IF 14.143
Chengtao Xu,Biao Ma,Zhongli Gao,Xing Dong,Chao Zhao,Hong Liu
DNA has been considered as a compelling candidate for digital data storage due to advantages such as high coding density, long retention time, and low energy consumption. Despite many works reported, the development of a DNA-based database of full integration, high efficiency, and practical applicability is still challenging. In this work, we report the synthesis and sequencing of DNA on a single electrode with scalability for an integrated DNA-based data storage system. The synthesis of DNA is based on phosphoramidite chemistry and electrochemical deprotection. The sequencing relies on charge redistribution originated from polymerase-catalyzed primer extension, leading to a measurable current spike. By regeneration of the electrode after sequencing, repeated sequencing can be achieved to improve the accuracy. A SlipChip device is developed to simplify the liquid introduction involved in DNA synthesis and sequencing. As the proof-of-concept experiment, text information is stored in the system and then accurately retrieved.
研究领域:
生物技术
·
分子生物学
·
数据科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jiawei Jiang,Peisheng Zhang,Le Liu,Yuqi Li,Yubin Zhang,Tiancheng Wu,Helou Xie,Chonghua Zhang,Jiaxi Cui,Jian Chen
Stimuli-responsive fluorescent materials that can alternate their emission states on-demand are always desired in many applications. In this study, novel photoswitchable multistate fluorescent polymer (PMFP) was prepared via simple free-radical copolymerization of butyl acrylate (BA) and styrene (St) with two photochromic fluorescent monomers, i.e. sulfonyl diarylethylene-linked 4-hydroxybutyl acrylate (SDTE) and spiropyran-linked methacrylate (SP8). The PMFP displays excellent processability, due to its rational feed ratio of BA and St which result in the relative low glass transition temperature. By changing irradiation light, the non-fluorescent ring-closed spiropyran units and ring-opened diarylethylene moieties in PMFP can be selectively converted into their corresponding luminescence states. Furthermore, as a result of the controllable fluorescence resonance energy transfer (FRET) from the excited diarylethylene to the spiropyran moieties, the emission of the polymer in solution or film can be reversibly switched among distinguishable no-emission, red, and green fluorescence states. Moreover, the PMFP exhibits high brightness, high contrast, rapid photoresponse, and excellent photoreversibility. We also demonstrated that PMFP can be directly used for advanced high-density data storage, multilevel information encryption, and multicolor photorewritable pattern, as well as high-level anticounterfeiting.
研究领域:
材料科学
·
光学
·
信息存储技术
✓ 已验证
DOI
高影响因子
Materials Chemistry Frontiers
·
2024
·
IF 6
Endian Cui,Gaoyuan Xing,Xiangyang Yuan,Yi Zhang,Flavia Artizzu,Xiaoling Liao,Jianfeng Tang,Yanan Zhao,Pengzhou Zhao,Kai Liu,Jing Liu
Metal ion doping is the most viable method to modulate the optical properties of lead-free Cs2AgInCl6 double perovskite (DP) nanocrystals (NCs). However, despite the fact that doping multiple cations can allow for emission color tuning, their random distribution into the perovskite matrix poses severe limitations caused by uncontrollable and adverse energy interactions between the dopants, resulting in poor emission color purity and photoluminescence (PL) quenching. To address this issue, we designed Cs2AgInCl6-based core–shell NCs doped with different metal ions in the two layers via an epitaxial growth strategy, with the aim to spatially separate the diverse optically active centers. We selected Cs2AgInCl6:Bi as the core and Cs2AgInCl6:Yb, Er as the shell and successfully constructed Cs2AgInCl6:Bi@Cs2AgInCl6:Yb, Er core–shell NCs. The so-designed core–shell NCs allow for non-interacting dual-modal luminescence (upconversion/downshifting) yielding not only broadband self-trapping exciton orange emission under ultraviolet (370 nm) excitation but also upconversion green light emission under near-infrared (980 nm) excitation, so far unprecedented in DP NCs. Taking advantage of the high photostability and stability against moisture bestowed by the shell coating, we demonstrate that the resulting core–shell DP NCs can be successfully employed as luminescent ink for dual-mode anti-counterfeiting labels. These results not only provide a novel design strategy for multi-emissive lead-free NCs, but can also represent a milestone to realize controllable luminescent materials for anti-counterfeiting and information storage.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Dezhi Feng,Chengtao Xu,Biao Ma,Chao Zhao,Hong Liu
Chemically synthesized DNA has been considered a promising medium for data storage. Among various methods, electrochemical synthesis is simple and easy to miniaturize, attracting much attention. However, conventional DNA synthesis uses phosphoramidite chemistry involving multi-step liquid-phase reactions and complicated liquid manipulation, restricting scalability and practical application. Here, we report the quasi-solid-state electrochemical DNA synthesis based on gels. All reagents required for different synthesis steps are contained in separate gels without mixing or dilution. Instead of complicated liquid manipulation, DNA synthesis on the electrode requires only relative motion between the electrode and gels. Similarly, blank gels with only acetonitrile are reused to clean the electrode surface without washing with plenty of liquid. We demonstrate our method is scalable using an electrode array for parallel DNA synthesis.
研究领域:
数据存储
·
电化学
·
分子生物学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Tianshuai Lyu,Haisong Li,Zhanhua Wei
Optimizing charge carrier storage in trap-controlled halide perovskites poses a significant challenge, particularly due to the varying electronic properties and trap dynamics across a temperature range from ≈100 to 400 K. This temperature dependence affects both the efficiency of charge carrier generation and their retention. In this study, substantial advancements in the performance of zirconium stannum halide perovskites are reported through targeted defect engineering. By modulating the composition of Cs 2 Sn 1-x Zr x Cl 6 and incorporating dopants of Cr 3+ , Ga 3+ , Bi 3+ , and Te 4+ , remarkable enhancements in X-ray triggered charge storage capacity are realized. Notably, Cs 2 ZrCl 6 doped with Cr 3+ , Ga 3+ , or Bi 3+ exhibits a three fold increase in charge carrier storage from 100 to 300 K, significantly outperforming the performance of state-of-the-art BaFBr(I):Eu 2+ and red afterglow Y 2 O 2 S:Eu 3+ phosphor. The Cs 2 Sn 1-x Zr x Cl 6 :yTe 4+ demonstrates over 40 times greater charge carrier storage capacity across a wide temperature range from 100 to 400 K and achieves a low detection limit of 99.16 nGy for X-ray dosimetry applications. Furthermore, Cs 2 ZrCl 6 :0.03Te 4+ exhibits exceptional persistent luminescence lasting over 6 and 14 h at 180 and 295 K. This research underscores the high-performance capabilities of engineered halide perovskites, paving the way for their application in advanced dosimetry and X-ray detection technologies at low temperatures.
研究领域:
材料科学
·
凝聚态物理
·
辐射探测
·
发光材料
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2017
·
IF 6.337
Sai Sun,Xiaodong Zhuang,Luxin Wang,Bo Liu,Bin Zhang,Yu Chen
The data storage performance, stability and reliability of the graphene memories have advanced significantly towards practical information storage applications. Using highly dispersed 4-bromobenzene functionalized RGO (BB-RGO) as two dimensional template, a new poly[(1,4-diethynylbenzene)- alt -boron dipyrro-methene]-grafted reduced graphene oxide (PDBD- g -RGO) was synthesized via Sonogashira coupling reaction. Covalent grafting of PDBD onto BB-RGO gives rise to a 34-cm −1 blue shift of the D band and a 7-cm −1 red shift of the G band when compared to the Raman spectrum of BB-RGO. A transparent and flexible nonvolatile memory device with configuration of Al/PDBD- g -RGO/ITO-coated poly(ethylene terephthalate) (PET) exhibited typical storage performance of rewritable memory that can be electrically erased and reprogrammed, with turn-on and turn-off voltages of 1.55 and −1.80 V, and an ON/OFF current ratio exceeding 10 5 . The memory behaviors of the flexible device were almost unchanged under the bending test .
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Qilin Li,Rengui Xu,Huiling Fan,Jiarong Xu,Yunruo Xu,Peng Cao,Yan Zhang,Tao Liang,Yang Zhang,Wei Chen,Zheng Wang,Lin Wang,Xiaoyuan Chen
The key to controlling the spread of the coronavirus disease 2019 (COVID-19) and reducing mortality is highly dependent on the safe and effective use of vaccines for the general population. Current COVID-19 vaccination practices (intramuscular injection of solution-based vaccines) are limited by heavy reliance on medical professionals, poor compliance, and laborious vaccination recording procedures, resulting in a waste of health resources and low vaccination coverage, etc. In this study, we developed a smart mushroom-inspired imprintable and lightly detachable (MILD) microneedle platform for the effective and convenient delivery of multidose COVID-19 vaccines and decentralized vaccine information storage. The mushroom-like structure allows the MILD system to be easily pressed into the skin and detached from the patch base, acting as a “tattoo” to record the vaccine counts in situ without any storage equipment, offering quick accessibility and effortless readout, saving a great deal of valuable time and energy for both patients and health professionals. After loading inactivated SARS-CoV-2 virus-based vaccines, MILD system induced a high level of antibodies against the SARS-CoV-2 receptor-binding domain (RBD) in vivo without eliciting systemic toxicity and local damage. Collectively, this smart delivery platform serves as a promising carrier to improve COVID-19 vaccination efficacy through its dual capabilities of vaccine delivery and in situ data storage, thus exhibiting great potential for helping to contain the COVID-19 pandemic or a resurgence.
研究领域:
生物医学工程
·
药学
·
病毒学
·
公共卫生
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Mengfeifei Jin,Weijie Zhou,Wenqiang Ma,Qin Wang,Xiaojuan Liang,Peiqing Zhang,Weidong Xiang
In the era of big data, the large amount of data generated every second requires modern and advanced data storage technologies. Femtosecond (fs) laser induced crystallization allow for the realization of fixed-point crystallization inside the CsPbBr 3 nanocrystals glasses (CPB), which can be applied in data storage. However, CPB is prone to self-crystallization prior to further heat treatment, interfering with fs-induced crystallization inside the glass and seriously hindering its application in data storage. Herein, we first propose the inhibition of CPB from self-crystallization by modulating the content of ZnO (4–20 mol%) using a melt-quenching method. ZnO was employed as a network modifier and was closely related to the glass network structure. When the content of ZnO was 4%, the CPB did not self-crystallize and was colorless. It was applied in the rewritable data storage by combining the 800 nm fs laser-induced crystallization, annealing (460 ℃/0.5 h) and fs laser erasing (20 mW). This work demonstrates a simple and efficient way to control the self-crystallization of CPBs, enhancing their potential practical application in high-capacity optical data storage with ultra-long working lifetimes.
研究领域:
材料科学
·
光学工程
·
信息存储技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Dezhi Feng,Biao Ma,Chengtao Xu,Jingyi Xu,Yiyang Zhang,Yi Chen,Gangsheng Chen,Yakun Gao,Duxin Chen,Wenwu Yu,Chao Zhao,Hong Liu
Synthetic DNA is essential for various areas. Array-based synthetic technologies have been developed, and owing to scalability their synthetic throughput can be dramatically increased with reduced time and cost. However, the traditional arrays are usually fabricated on solid and rigid substrates which can hardly be renewed, their scalability is still limited, which hinders further advance of the synthetic technology. Here, a renewable array based on transformable gallium (Ga) electrode for DNA synthesis and facilitate its downstream manipulation is reported. After the DNA synthesis based on electrochemically triggered phosphoramidite chemistry on the Ga electrode, the electrode can be simply renewed by converting its tip into a drop of liquid metal (LM) so that the remaining electrode can be used for a new synthetic cycle. It also found that by repeated deformations of the LM drop, producing increased oxidation layer on the Ga, the surface DNA can be encapsulated within the LM drop for protection and easy manipulation. It is demonstrated that programmable DNA synthesis and manipulation can be accomplished on a microfluidic chip, which can be used for highthroughput, low-cost DNA synthesis and manipulation for data storage.
研究领域:
合成生物学
·
生物电子学
·
纳米技术
·
微流控技术
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Jian Gou,Yousong Hu,Luxin Xing,Jun Xu,Fengzhi Yue,Lina Zhang,Lei Jia
Traditional luminescent materials for anti-counterfeiting usually adopt encryption of low-level systems with limited security, which seriously hinders their application in preventing counterfeiting and information leakage. Therefore, it is urgent to develop materials for higher-level anti-counterfeiting. In this work, a stimulus-responsive intelligent luminescent material (AC@CDs-Eu-MOFs) was prepared by co-loading green-fluorescence CDs and red-fluorescence Eu-MOFs on Amino clay (AC). 5D security barcodes, which were easy to observe while difficult to clone, were ulteriorly designed based on the nanocomposite owing to the tunable fluorescence by optical stimulation and chemical stimulus. Owing to the large capacity, low cost, and easy authentication, the 5D security barcodes possess enormous potential in optical data storage and multi-dimensional information encryption. In addition, the chemical stimulus-response enables the nanocomposite achievable in detection of Cu 2+ and Bacillus anthracis. Particularly, quantitative determination of copper in environmental water samples could be realized with a detection limit as low as 10.67 nM. Therefore, the material shows potential for detection of environmental pollutants besides advanced anti-counterfeiting.
研究领域:
材料科学
·
纳米技术
·
环境科学
·
生物技术
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）