Electrically and Optically Active Nanostructures and Interfaces

电活性和光学活性纳米结构和界面

• 批准号: RGPIN-2019-06545
• 负责人: Martel, Richard
• 金额: $ 4.66万
• 依托单位: Université de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=748697
• 关键词: Electrically; Optically; Active; Nanostructures; Interfaces

Crystalline materials structured at the nanometer-scale exhibit low-dimensional (1D and 2D) properties that are distinct from that of bulk crystals. The effects of confinement have triggered in the past important scientific breakthroughs, which led to important technologies, such as, the solid-state laser, the transistor, the diode and so forth. Quantum confinement effects in 1D and 2D nanostructures has been used to tune the bandgap energy of materials, improve their electrical and thermal conductivities, enhance light-matter interaction, and even induce selective catalysis. The huge surface to volume ratio inherent to nanostructures exacerbates, however, the influence of small perturbations and creates parasitic behaviours in electronic devices. Using the most advanced imaging and spectroscopic tools, this program aims to explore further the physical properties of nanomaterials and study more specifically chemical phenomena taking place at their surfaces and interfaces. Exfoliated black-Phosphorus (bP), graphene, nanotubes (CNTs and BNNTs), and more complex structures made of these building blocks (hybrid nanostructures) will be investigated through projects involving chemical functionalization, 1D optical nanoprobes, 2D membranes and nanodevices. More specifically, these projects will target few main areas of research: 1) Develop optical Raman and fluorescence nanoprobes made of dyes encapsulated in nanotubes for applications in hyperspectral imaging of chemical processes, including remote pH sensing; 2) Explore the properties of exfoliated black phosphorus and functionalized graphene films and membranes; 3) Develop a device concept with graphene film having large dimensions (cm scale) to amplify optical responses in the mid-infrared region of the spectrum; 4) Explore field-emitting electron sources based on tunnelling principles for electron microscopy and spectroscopy. This program will develop nanodevices and hybrid nanostructures using processes developed in the lab of the applicant combined with other techniques borrowed from surface chemistry and microelectronics.The proposed projects are multidisciplinary in nature and blend concepts borrowed from surface and interface of materials, nanoscience, and solid-state chemistry and physics. Though this experimental research, the applicant will advance the basic knowledge on interfacial chemistry at the nanometer scale and challenge the limits of sensing and resolution using the electrons as a probe. More importantly, this program is designed to serve as the main training platform to develop highly qualified personnel for the area of electronic materials and device fabrication.

在纳米尺度暴露的低维（1d和2d）特性的结构材料与大块晶体不同。在过去的重要科学突破中触发了禁闭的影响，这导致了重要的技术，例如固态激光器，晶体管，二极管等。 1D和2D纳米结构中的量子限制效应已被用来调整材料的带隙能，改善其电气和导热率，增强轻度 - 强度相互作用，甚至诱导选择性催化剂。但是，巨大的表面与体积比遗传到纳米结构加剧，但是，小扰动的影响并在电子设备中产生了寄生行为。该程序使用最先进的成像和光谱工具，旨在进一步探索纳米材料的物理特性，并在其表面和接口上更具体地研究化学现象。将通过涉及化学功能化的项目，1D光学的纳米螺旋体，2D膜和纳米电视板来研究剥落的黑磷（BP），石墨烯，纳米管（CNT和BNNTS（CNT和BNNTS），以及由这些构件（混合纳米结构）制成的更复杂的结构。更具体地说，这些项目将针对几个主要研究领域：1）开发由纳米管中染色体制成的光学拉曼和荧光纳米探针，用于在化学过程的高光谱成像中应用，包括远程pH感应； 2）探索剥落的黑磷和功能化石墨烯膜和机制的特性； 3）使用具有较大尺寸（CM尺度）的石墨烯膜开发设备概念，以扩大光谱中中红外区域的光学响应； 4）基于电子显微镜和光谱学的隧道原理探索现场发射电子源。该程序将使用在适用的实验室中开发的过程以及从表面化学和微电子借入的其他技术中开发的过程开发纳米座和混合纳米结构。所提出的项目本质上是多学科的，并且是从材料，含量，纳米科学，固体化学和物理学的表面和界面借用的多学科概念。尽管这项实验研究，但适用的将在纳米尺度上推进有关界面化学的基本知识，并以电子设备作为探针来挑战灵敏度和分辨率的极限。更重要的是，该计划旨在作为主要培训平台，以开发高素质的电子材料和设备制造领域的人员。