Han Liu , Hairui Bai , Yibo Zhou , Ping Li , Wenyan Su , Chang Liu , Xunfan Liao , Bohao Song , Xiong Li , Zhaozhao Bi , Chao Zhao , Hongtao Liu , Guanghao Lu , Huiling Du , Long Jiang , Yuhang Liu , Ruijie Ma , Wei Ma , Qunping Fan
{"title":"Brominated isomerization engineering of 1-chloronaphthalene derived solid additives enables 19.68% efficiency organic solar cells","authors":"Han Liu , Hairui Bai , Yibo Zhou , Ping Li , Wenyan Su , Chang Liu , Xunfan Liao , Bohao Song , Xiong Li , Zhaozhao Bi , Chao Zhao , Hongtao Liu , Guanghao Lu , Huiling Du , Long Jiang , Yuhang Liu , Ruijie Ma , Wei Ma , Qunping Fan","doi":"10.1016/j.mser.2024.100879","DOIUrl":"10.1016/j.mser.2024.100879","url":null,"abstract":"<div><div>Using halogenated additive to optimize the active layer morphology has been proven effective in boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). However, the halogenated isomerism of solid additives, which finely tunes blend morphology, has been understudied, with the associated mechanisms requiring further investigation. Herein, a brominated isomerization engineering using 1-chloronaphthalene (CN)-derived solid additives (2-bromo-1-chloronaphthalene/<em>o</em>-BrCN, 3-bromo-1-chloronaphthalene/<em>m</em>-BrCN, and 4-bromo-1-chloronaphthalene/<em>p</em>-BrCN, respectively) is firstly developed. Among these, <em>p</em>-BrCN, with symmetrically halogenated positions, exhibits a small dipole moment, facilitating an extraordinary non-covalent interaction with both donor and acceptor components. Consequently, the <em>p</em>-BrCN-treated active layer obtains better molecular crystallinity, π-π stacking, and phase separation, helping to improve the exciton dissociation and charge transport of OSCs. Ultimately, the <em>p</em>-BrCN-treated OSC based on PM6:L8-BO offers a higher PCE (18.18%) compared to those treated with <em>o</em>-BrCN (17.89%) and <em>m</em>-BrCN (17.39%). Remarkably, the <em>p</em>-BrCN-treated OSCs based on D18:L8-BO and D18:L8-BO:BTP-eC9 further improve PCEs to 19.14% and 19.68%, placing them among the highest values for binary and ternary OSCs, respectively. This work highlights that brominated isomerization engineering in CN-derived additives is a promising strategy to optimize morphology for obtaining efficient OSCs, and elucidates the underlying mechanism.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"162 ","pages":"Article 100879"},"PeriodicalIF":31.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Murali Gedda , Haomin Song , Anil Reddy Pininti , Omar Alkhazragi , Hendrik Faber , Xiaoguang Tu , Husam N. Alshareef , Stefaan De Wolf , Boon S. Ooi , Thomas D. Anthopoulos , Qiaoqiang Gan
{"title":"High-speed, self-powered 2D-perovskite photodetectors with exceptional ambient stability enabled by planar nanocavity engineering","authors":"Murali Gedda , Haomin Song , Anil Reddy Pininti , Omar Alkhazragi , Hendrik Faber , Xiaoguang Tu , Husam N. Alshareef , Stefaan De Wolf , Boon S. Ooi , Thomas D. Anthopoulos , Qiaoqiang Gan","doi":"10.1016/j.mser.2024.100885","DOIUrl":"10.1016/j.mser.2024.100885","url":null,"abstract":"<div><div>Advancements in photodetector (PD) technology are pivotal for the evolution of optical communication and imaging systems. Addressing the demands of these applications necessitates PDs that can deliver both high-speed response and high sensitivity. In this context, we introduce an innovative high-speed PD design utilizing ultrathin two-dimensional metal halide perovskites (2D-MHP), coupled with a planar nanocavity to significantly enhance optical absorptance—achieving more than a fourfold increase in a solution-processed 10-nm-thick 2D-MHP film. This integration facilitates an exceptional response time (30 ns) alongside a high responsivity of 2.12 A W<sup>−1</sup>. Our method overcomes traditional constraints related to thickness and absorption, thereby optimizing device speed and dark noise features through active area variation. Intriguingly, the nanocavity architecture provided a unique protection of 2D-MHP layers, realizing remarkable operational and environmental stability: our devices maintain performance integrity for over 150 days. Notably, our best-performing cavity-enhanced devices exhibit the capability to establish an optical wireless communication link, achieving a data transmission rate of 20 Mbps. This approach effectively tackles the challenges posed by the low absorption of ultrathin layers, heralding a new era for applications in imaging, optical communication systems, and more.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"162 ","pages":"Article 100885"},"PeriodicalIF":31.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annan Chen , Jin Su , Muran Zhou , Mingpei Cang , Yinjin Li , Yunsong Shi , Zhen Zhang , Yangzhi Zhu , Bin Su , Yang Liu , Zuo-Guang Ye , Yusheng Shi , Jüergen Röedel , Huachen Cui , Haibo Zhang , Kun Zhou , Jian Lu , Chunze Yan
{"title":"Biocompatible piezoelectric lattice materials with ultrasound-regulated multimodal responses","authors":"Annan Chen , Jin Su , Muran Zhou , Mingpei Cang , Yinjin Li , Yunsong Shi , Zhen Zhang , Yangzhi Zhu , Bin Su , Yang Liu , Zuo-Guang Ye , Yusheng Shi , Jüergen Röedel , Huachen Cui , Haibo Zhang , Kun Zhou , Jian Lu , Chunze Yan","doi":"10.1016/j.mser.2024.100876","DOIUrl":"10.1016/j.mser.2024.100876","url":null,"abstract":"<div><div>Piezoelectric biomaterials, capable of converting electrical energy to mechanical energy and vice versa, are desirable for implantable devices that can achieve biosensing, tissue regeneration, anti-infection, and tumor treatment. However, their low piezoelectricity, simple geometry, and monotonous functionality remain challenging towards practical applications. Here, we report the design and additive manufacturing of a series of biocompatible piezoelectric lattice materials with bone-mimicking designs and ultrasound-regulated electrical responses. Barium calcium zirconate titanate (BCZT) with a piezoelectric coefficient <em>d</em><sub>33</sub> up to 580 pC/N was synthesized and used as the parent material of the lattices for additive manufacturing. The as-fabricated BCZT lattices have compressive strength comparable to native trabecular bones, making them promising candidates for implantation and <em>in vivo</em> activation. We show that the lattices allow on-demand activation of anti-tumor or osteogenic functions with programmable non-invasive ultrasound stimuli, both <em>in vitro</em> and <em>in vivo</em>. Our findings provide new insights and a widely applicable strategy for developing versatile, non-invasive, and regulatable biomedical devices via bio-mimicking designs and additive manufacturing.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"162 ","pages":"Article 100876"},"PeriodicalIF":31.6,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flexomagnetism: Progress, challenges, and opportunities","authors":"Ziming Tang , Qihua Gong , Min Yi","doi":"10.1016/j.mser.2024.100878","DOIUrl":"10.1016/j.mser.2024.100878","url":null,"abstract":"<div><div>Flexomagnetism refers to the higher order magneto-mechanical coupling, associating magnetic polarization with strain gradient. Although it is weak in bulk materials, the flexomagnetic effect in small-sized samples where the strain gradient could be remarkably large presents an opportunity for the efficient manipulation of magnetic performance in nanomaterials and advanced spintronic devices. In this article we share a state-to-the-art review on the progress, challenges, and opportunities for exploring flexomagnetism. The review starts with the narrow and general definitions of flexomagnetism with a focus on the intrinsic flexomagnetism and flexomagnetic response, respectively. Then we demonstrate the different types of strain gradient for inducing the flexomagnetic effect, the theoretical models at various scales for flexomagnetism, and the simulation/experimental progress on the manipulation of magnetic properties by using flexomagnetic effect. We then discuss the current controversies and challenges regarding the disagreements between experimental and computational results as well as the limitations of existing hypotheses. Lastly, we suggest some prospects for future research on flexomagnetism.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"162 ","pages":"Article 100878"},"PeriodicalIF":31.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Machine learning-enhanced photocatalysis for environmental sustainability: Integration and applications","authors":"Augustine Jaison , Anandhu Mohan , Young-Chul Lee","doi":"10.1016/j.mser.2024.100880","DOIUrl":"10.1016/j.mser.2024.100880","url":null,"abstract":"<div><div>Photocatalysis, an essential technology for sustainable fuel production and environmental remediation often encounters challenges due to the complexity and vastness of potential catalyst materials. Machine learning (ML), a branch of artificial intelligence, offers transformative potential to accelerate catalyst exploration by leveraging data-driven models to predict and optimize photocatalysts. Recent developments in artificial intelligence and data science hold enormous promise for accelerating the discovery of new materials in environmental science and photocatalysis technologies. This review delves into the integration of ML in photocatalysis, focusing on its role in improving light absorption, charge separation, and photoreactor design. In addition, the content emphasizes the importance of ML in photocatalytic applications such as drug degradation, water splitting, and organic dye degradation. ML techniques can enhance these applications by predicting the behavior of photocatalysts, improving their efficiency, and accelerating the discovery of new materials. With the help of ML, advanced next-generation catalysts can be developed, and the review serves as a guide for the scientific community regarding the use of ML in photocatalysis and environmental applications.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100880"},"PeriodicalIF":31.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shouyi Hu , Guijun Guo , Jiaxi Zhang , Mehak Nawaz Khan , Shuanghua Xu , Fan Yang , Brian W. Schwandt , Zhigang Hu , Jianxin Zou
{"title":"Advanced porous MOF materials and technologies for high-efficiency ppm-level toxic gas separation","authors":"Shouyi Hu , Guijun Guo , Jiaxi Zhang , Mehak Nawaz Khan , Shuanghua Xu , Fan Yang , Brian W. Schwandt , Zhigang Hu , Jianxin Zou","doi":"10.1016/j.mser.2024.100874","DOIUrl":"10.1016/j.mser.2024.100874","url":null,"abstract":"<div><div>Effective control of toxic gaseous pollutants being emitted into the atmosphere has posed a critical and urgent challenge to deal with global climate change, protect the environment and human health as well as achieve clean and sustainable development. There remains a continuous threat to our human life from various toxic gaseous chemicals. Traditional methods for removing toxic gases usually suffer from shortcomings, such as low-capacity, energy-intensive, waste generation, and high cost. Metal-organic frameworks (MOFs), architected by various metal centers and organic ligands, represent a new type of adsorbent, which could readily offer a promising solution to capturing toxic gases. In this review, we provide detailed insights of the recent progress made on the adsorptive capture performance of MOF materials towards several critical toxic gases, such as SO₂, NO₂, NH₃, H₂S, sarin, CNCl, and CO. Considering the working condition and mixture components, the adsorption performance of various toxic gases are critically assessed and sorted. By comparing different modification strategies of a series of MOFs and corresponding performance manifestations, we make attempts to delineate future research directions to improve the adsorptive capture performance of MOFs toward toxic gases for real industrial applications.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100874"},"PeriodicalIF":31.6,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin Zhou , Chang Wang , Xinhao Zhang , Lin Jiang , Renbing Wu
{"title":"Advances in two-dimensional layered materials for gas sensing","authors":"Jin Zhou , Chang Wang , Xinhao Zhang , Lin Jiang , Renbing Wu","doi":"10.1016/j.mser.2024.100872","DOIUrl":"10.1016/j.mser.2024.100872","url":null,"abstract":"<div><div>The emergence of two-dimensional (2D) layered materials with unique physiochemical properties and structure versatility has significantly boosted the development of gas sensing technology. This review paper explores recent advances in utilizing 2D materials, such as graphene, transition metal dichalcogenides (TMDs), black phosphorus, hexagonal boron nitride (h-BN), g-C<sub>3</sub>N<sub>4</sub>, MXenes, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs), for field-effect transistor (FET) and chemiresistive gas sensors. In addition to the unique properties contributing to the sensing performance, the key aspects of synthesis methods, sensing mechanisms, and sensing performance of 2D materials are systematically elaborated. Furthermore, the review highlights recent progress in performance optimization through material functionalization, heterostructure design, and material systems hybridization. Potential solutions to the key challenges, including scalability, reproducibility, selectivity, and environmental stability, are addressed to unlock the full potential of 2D materials in gas-sensing applications. By comprehensively compiling state-of-the-art developments in 2D layered materials for gas sensing, this review provides critical insights into the evolving landscape of sensor technologies and inspires new strategies for addressing critical environmental and industrial challenges.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100872"},"PeriodicalIF":31.6,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biobased and aromatic Covalent Adaptable Networks: When architectures meet properties, within the framework of a circular bioeconomy","authors":"Lisa Sougrati , Antoine Duval , Luc Avérous","doi":"10.1016/j.mser.2024.100882","DOIUrl":"10.1016/j.mser.2024.100882","url":null,"abstract":"<div><div>In the current context of environmental emergency, the need for sustainable materials with controlled end-of-life is paramount. Covalent Adaptable Networks (CANs) are a novel class of polymers offering a unique solution by combining the main advantages of thermosets and thermoplastics such as high mechanical performance and recyclability. Sustainable feedstocks, such as biobased compounds from biomass represent nowadays prime alternatives to fossil-based chemicals. Consequently, aromatic-rich renewable resources, owing to their abundances and structural variety, are feedstocks of choice in the design of materials combining performance, sustainability, and circularity. Then, the substitution of fossil-based raw materials with biobased compounds for the preparation of CANs is improving, among which aromatic structures, such as lignins, tannins, cashew nutshell liquid or furan, provide unprecedented features and properties. After a description of CANs general features and the presentation of available biobased aromatic feedstocks, an overview of recent advances in the synthesis of biobased aromatic networks is presented. An emphasis is placed on the opportunity offered by the aromatic building blocks functional groups to implement dynamic covalent chemistries. Subsequently, an understanding on the benefits of aromaticity on specific properties required for targeted applications, including sensors, adhesives, flame retardants, biomedical devices, or coatings, is proposed. All these proving the design of biobased and aromatic CANs to be a considerable step towards for a more sustainable future in the frame of a circular bioeconomy.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100882"},"PeriodicalIF":31.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jie Feng , Tonglong Zeng , Tian Tian , Ning Wang , Xue Yang , Yanan Zhou , Jiaxin Wang , Xinying Liu , Junhao Chu , Hong Wang , Qingliang Feng
{"title":"Hydroxyl black phosphorus crystal based highly symmetric ambipolar transistors for infrared in-sensor encryption","authors":"Jie Feng , Tonglong Zeng , Tian Tian , Ning Wang , Xue Yang , Yanan Zhou , Jiaxin Wang , Xinying Liu , Junhao Chu , Hong Wang , Qingliang Feng","doi":"10.1016/j.mser.2024.100871","DOIUrl":"10.1016/j.mser.2024.100871","url":null,"abstract":"<div><div>With the increasing demand for infrared sensing data security, it is crucial to enhance the security of sensing data by utilizing in-sensor encryption techniques while simultaneously reducing latency, power consumption, and hardware resource utilization. However, the inherent computational limitations of sensors impede their capacity to execute sophisticated encryption algorithms. In this paper, we propose hydroxyl black phosphorus (BP) crystal for ambipolar transistors that enable infrared in-sensor encryption. An innovative approach utilizes a simple oxygen plasma treatment technique to fabricate hydroxyl BP crystal is proposed. Hydroxyl bonded on the surface of BP shifts the Fermi level towards the conduction band and generates free electrons, results ambipolar transport. The hydroxyl BP transistors exhibit symmetrical bipolar characteristics with hole mobility of 131.4 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup> and electron mobility of 89.8 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>. Importantly, a non-linear XOR logic gate can be implemented within a single transistor during the infrared sensing process, effectively simplifying the complexity of in-sensor encryption design. Expounding upon this, we demonstrate an infrared in-sensor encryption using an array of hydroxyl BP transistors, which can capture images and achieving high-fidelity infrared in-sensor encryption. Our findings highlight the potential of hydroxyl BP in the development of infrared in-sensor encryption techniques.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100871"},"PeriodicalIF":31.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongyuan Zhao , Jiangni Yun , Zhen Li , Yu Liu , Lei Zheng , Peng Kang
{"title":"Two-dimensional van der Waals ferroelectrics: A pathway to next-generation devices in memory and neuromorphic computing","authors":"Hongyuan Zhao , Jiangni Yun , Zhen Li , Yu Liu , Lei Zheng , Peng Kang","doi":"10.1016/j.mser.2024.100873","DOIUrl":"10.1016/j.mser.2024.100873","url":null,"abstract":"<div><div>The rapid increase in CPU processing speeds has significantly advanced artificial intelligence, yet it has also exacerbated the disparity in CPU utilization and data throughput rates due to the shared memory architecture of traditional von Neumann systems. To enhance computational efficiency, there is a critical need to explore advanced functional materials and integrate these into novel computing architectures. Two-dimensional (2D) ferroelectric materials, characterized by their atomic-scale ferroelectric non-volatile properties and low switching barriers, emerge as promising candidates. These materials are particularly suitable for use as non-volatile resistors and artificial synapses within in-memory computing frameworks. Furthermore, their compatibility with Si-CMOS technology enables the high-density integration of devices, potentially driving a new paradigm in integrated computation between processing units and storage architectures. This review focuses on recent developments in 2D ferroelectric materials, including their structural properties, polarization switching mechanisms, and diverse applications. Special emphasis is placed on their potential in integrated applications such as non-volatile memories, neural network computing, non-volatile logic operations, and optoelectronic memories within neuromorphic computing devices.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"161 ","pages":"Article 100873"},"PeriodicalIF":31.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}