Unconventional Heteroanion Ceramics: 2D Layered Seleno- and Thio-Phosphates

非常规杂阴离子陶瓷：二维层状硒代磷酸盐和硫代磷酸盐

• 批准号: 1929356
• 负责人: Vinayak Dravid
• 金额: $ 64万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1929356&HistoricalAwards=false
• 关键词: Unconventional; Heteroanion; Ceramics; 2D; Layered

NON-TECHNICAL DESCRIPTION: The performance of silicon-based architecture is now approaching fundamental limits governed by physics. Thus, there is a critical need for new materials and novel structures that may follow the meteoritic growth of conventional silicon microelectronic technology of the past few decades. In this context, new scientific opportunities are presented by emerging two-dimensional (2D) materials, especially those whose composition can be tailored and optimized. Ever since the discovery of graphene, a single 2D layer of carbon atoms, which was the subject of Physics Nobel prize a decade ago, other 2D layered structures are being pursued worldwide. This research focuses on a new class of 2D layered materials, called chalcophosphates where phosphorous, sulphur and analogous elements are arranged in an intricate planar mosaic pattern. This research develops and explores metal chalcophosphates as a new class of ceramic materials for their magnetic, ferroelectric, and coupled properties, with unusual quantum behavior. This unique combination of non-linear phenomena provide rich opportunities to advance science of ceramics, and creates a potential platform for new generation of magneto-electronic devices. This emerging research field is likely to generate new technology industries and require workforce with extensive hands-on expertise in novel multicomponent ceramic materials and their characterization. As a result, research activities are integrated with educational and societal outreach initiatives, anchored by the unique platform for 2D layered ceramic materials. The other broader impact goals include training of undergraduate and graduate students in advanced materials research and incorporation of research results into course and curricula. Through an innovative "Materials-Journalism" program, Medill school journalism students immerse to witness the scientific process and report their findings in their journalism blogs and reports. Conversely, the research team members learn journalism practices of story-telling and how to synthesize complex scientific undertaking into meaningful discourse with the public. Collectively, the research advances scientific insights with prospects for technology breakthroughs in the new class of 2D ceramics, with educational opportunities for graduate and undergraduate students, and societal outreach through the journalism initiative. TECHNICAL DETAILS: This research revolves around synthesis and advanced characterization of 2D layered metal chalcophosphates (MCP), i.e. thiophosphates and selenophosphates, as a new and novel class of 2D layered ceramic systems. Anchored on a variety of possible chemical combinations, especially with heteroanions, the synthesized structures are readily amenable to extensive multimodal characterization methods to map their complex structural characteristics in conjunction with their linear and non-linear properties. Of specific interest are single- and few layered 2D structures to explore the role of spatial and dimensional constraints. This goal is accomplished by classical mechanical exfoliation as well as vapor-based deposition methods developed in the laboratory. Also, this project investigates the nature and extent of coupling between ferroelectric and ferromagnetic properties, especially in the few- and single layers. The primarily focus is on magnetic M2P2Q6 (M= Cr, Mn, Fe, Co, Ni, Q=S, Se) and ferroelectric/ferromagnetic AMP2Q6 (A=Ag,Cu, M=In,Ga,Cr,Mn,Fe,Gd). A diverse yet integrated multimodal techniques and characterization methods are employed to unravel the complex labyrinth of microstructure across multiple length-scales. Advanced scanning and transmission electron microscopy techniques probe the local structure, phases, chemical partitioning, and related phenomena. Theoretical work conducted in close connection with the experimental efforts examines the bulk properties of materials and analyzes the meso and nano-scale phenomena in heterostrucure architectures of thio- and selenophosphates and its interaction with substrates. The scientific insights governed by unusual combination of heteroanion systems with spatial and dimensional constraints are expected to display unusual linear and non-linear ferroelectric and ferromagnetic as well as coupled properties and phenomena.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术性描述：硅基架构的性能现在正接近物理学的基本极限。因此，迫切需要新的材料和新的结构，可以遵循过去几十年的传统硅微电子技术的陨石生长。在这种情况下，新兴的二维（2D）材料，特别是那些其成分可以定制和优化的材料，带来了新的科学机遇。自从十年前诺贝尔物理学奖的主题--碳原子的单一2D层--石墨烯的发现以来，世界各地都在追求其他2D层状结构。这项研究的重点是一类新的2D层状材料，称为硫磷酸盐，其中磷，硫和类似元素以复杂的平面镶嵌图案排列。本研究开发和探索金属硫磷酸盐作为一类新的陶瓷材料，其磁性，铁电性和耦合特性，具有不寻常的量子行为。这种非线性现象的独特组合为推进陶瓷科学提供了丰富的机会，并为新一代磁电子器件创造了潜在的平台。这一新兴的研究领域可能会产生新的技术产业，并需要在新型多组分陶瓷材料及其表征方面具有广泛实践专业知识的劳动力。因此，研究活动与教育和社会推广计划相结合，由2D层状陶瓷材料的独特平台锚定。其他更广泛的影响目标包括在高级材料研究方面对本科生和研究生进行培训，并将研究成果纳入课程和课程。通过一个创新的“材料新闻”计划，梅迪尔学校新闻专业的学生沉浸在见证科学过程中，并在他们的新闻博客和报告中报告他们的发现。相反，研究团队成员学习新闻讲故事的实践，以及如何将复杂的科学事业与公众进行有意义的对话。总的来说，这项研究推进了科学见解，展望了新一代2D陶瓷的技术突破，为研究生和本科生提供了教育机会，并通过新闻倡议进行了社会宣传。技术规格：本研究围绕2D层状金属硫代磷酸盐（MCP），即硫代磷酸盐和硒代磷酸盐，作为一种新的和新颖的2D层状陶瓷系统的合成和先进的表征。锚定在各种可能的化学组合，特别是与杂阴离子，合成的结构很容易服从广泛的多峰表征方法，以映射其复杂的结构特征，结合其线性和非线性特性。特别感兴趣的是单层和几层2D结构，以探索空间和尺寸约束的作用。这一目标是通过经典的机械剥离以及在实验室中开发的气相沉积方法来实现的。此外，该项目还研究了铁电和铁磁特性之间耦合的性质和程度，特别是在少数和单一层中。主要关注磁性M2 P2 Q6（M= Cr，Mn，Fe，Co，Ni，Q=S，Se）和铁电/铁磁AMP 2 Q6（A=Ag，Cu，M=In，Ga，Cr，Mn，Fe，Gd）。一个多样化的，但综合的多模态技术和表征方法，解开复杂的迷宫的微观结构在多个长度尺度。先进的扫描和透射电子显微镜技术探测局部结构、相、化学分配和相关现象。与实验工作密切相关的理论工作检查了材料的整体性能，并分析了硫代和硒代磷酸盐异质结构体系结构中的介观和纳米尺度现象及其与基材的相互作用。由具有空间和尺寸限制的杂阴离子系统的不寻常组合所支配的科学见解，预计将显示出不寻常的线性和非线性铁电和铁磁以及耦合性质和现象。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Probing Optical Phenomena of Si@MoS2 Core-Shell Architectures at Nanoscale by Valence EELS

利用 Valence EELS 探测纳米级 Si@MoS2 核壳结构的光学现象

• DOI: 10.1017/s1431927622007838
• 发表时间: 2022
• 期刊: Microscopy and Microanalysis
• 影响因子: 2.8
• 作者: Lee, Yea-Shine;Hinamoto, Tatsuki;Dereshgi, Sina Abedini;Hao, Shiqiang;Cheng, Matthew;Sugimoto, Hiroshi;Fujii, Minoru;Wolverton, Christopher;Aydin, Koray;Reis, Roberto dos
• 通讯作者: Reis, Roberto dos

Nano-SCHeMe: Nanomaterial Sponge Coatings for Heavy Metals, an Environmental Remediation Platform

• DOI: 10.1021/acsestwater.2c00646
• 发表时间: 2023-05-10
• 期刊: ACS ES&T WATER
• 作者: Shindel，Benjamin;Ribet，Stephanie M.;Dravid，Vinayak P.
• 通讯作者: Dravid，Vinayak P.

Structural, Chemical, and Local Properties of Layered Metal Chalcophosphate Systems

层状金属硫磷酸盐体系的结构、化学和局部特性

• DOI: 10.1017/s1431927620021261
• 发表时间: 2020
• 期刊: Microscopy and Microanalysis
• 影响因子: 2.8
• 作者: Cheng, Matthew;Reis, Roberto dos;Chica, Daniel;Kanatzidis, Mercouri;Dravid, Vinayak
• 通讯作者: Dravid, Vinayak

Multimodal Characterization of the Oleophilic Hydrophobic Magnetic (OHM) Sponge: A Nanocomposite Material for Oil Spill Remediation

亲油疏水磁性 (OHM) 海绵的多模态表征：用于溢油修复的纳米复合材料

• DOI: 10.1017/s1431927620022680
• 发表时间: 2020
• 期刊: Microscopy and Microanalysis
• 影响因子: 2.8
• 作者: Ribet, Stephanie;Nandwana, Vikas;Reis, Roberto dos;Abbott, Tirzah;Roth, Eric;Dravid, Vinayak
• 通讯作者: Dravid, Vinayak

Probing the Optical Response and Local Dielectric Function of an Unconventional Si@MoS 2 Core–Shell Architecture

探讨非常规 Si@MoS 2 核壳架构的光学响应和局域介电函数

• DOI: 10.1021/acs.nanolett.2c01221
• 发表时间: 2022
• 期刊: Nano Letters
• 影响因子: 10.8
• 作者: Lee, Yea-Shine;Abedini Dereshgi, Sina;Hao, Shiqiang;Cheng, Matthew;Shehzad, Muhammad Arslan;Wolverton, Christopher;Aydin, Koray;dos Reis, Roberto;Dravid, Vinayak P.
• 通讯作者: Dravid, Vinayak P.