Tunable Nanocomposites for Smart Materials and Technology Platform

用于智能材料和技术平台的可调谐纳米复合材料

• 批准号: RGPIN-2018-06667
• 负责人: Mkandawire, Martin
• 金额: $ 2.04万
• 依托单位: Cape Breton University
• 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=764704
• 关键词: Tunable; Nanocomposites; Smart; Materials; Technology

I am requesting funding in tune of $189,525.00 from NSERC Discovery grant for a span of five years to support my research program of developing a Smart Material and Technology Platform using novel and tuneable nanomaterials with highly sensitivity to milieu changes. Smart materials and technologies are objects that sense environmental events, process the sensory information, and then act on the environment. They should have intrinsic or embedded quick response and self-actuation capabilities and exhibit characteristics, including responding in real-time, to more than one stimulating state, discretely, predictably and locally to the activating' event. Novel candidates for such materials are ceramic nanoparticles, because their properties can be easily tuned and tailored to desired use. For instance, metal oxide nanoceramic can be easily formed into hollowed nanoparticles, as well as have unique magnetic and spintronic behaviors. As such, the nanoceramics can be simultaneously used in sensory and micro-carriers of catalytic nanoparticles or act as nano-reactors.Specifically, the requested funding will support fundamental research to develop methods of fabricating and functionalizing hollowed ceramic nanomaterial with tailored and tuneable properties to support the development of smart technology platforms. During formation of ceramic material, there is a directional flow of material across an interface, which can lead to the formation of holes in the atomic lattice - a process known as the Kirkendall effect forming hollowed nanoparticles or nanoshells, which can be used as entrapment system for loading, storage, and controlled release of reactive components. When hollowed structure are combined with magnetic properties, such ceramic nanomaterial can be used to develop in situ sensing devices, capable of communicating wirelessly to a monitoring receiver. Currently, my research programme has two on-going research projects to benefit from the support, namely: (a) developing Smart Packaging Materials (SPMs) for prolonging storage and shelf-life of perishable food products. SPM will require the hollowed ceramic nanoparticles to encapsulate gas-scavenging material (e.g. ethylene responsible for fruit ripening or oxygen responsible for meat and dairy products degradation). Good examples include aluminum-silicate hollow cylinders (i.e., halloysite clay nanotubes), capable to load and sustained release of chemical agent; and, (b) developing Smart Wound-dressing Material (SWMs) for real-time monitoring of the wound-healing process while still the wound is still dressed. The SWMs require magnetic nanoceramic embedded into the gauze fibre, which would response to wound healing biomarker (e.g. temperature gradient and gas release, like H2O2) by changing their magnetism and spintronic behaviour.

我要求从NSERC Discovery Grant的$ 189,525.00筹集资金五年，以支持我的研究计划，该计划使用新颖且可调的纳米材料开发智能材料和技术平台，对环境变化高度敏感。智能材料和技术是感知环境事件，处理感官信息然后在环境上行动的对象。他们应该具有固有或嵌入的快速响应和自我效应能力，并表现出表现特征，包括实时响应，对一个以上的刺激状态，离散，可预测和本地对激活”事件。此类材料的新型候选物是陶瓷纳米颗粒，因为它们的性质很容易调整并根据所需的使用来调整和量身定制。例如，金属氧化物纳米陶瓷可以很容易地形成到空心的纳米颗粒中，并具有独特的磁性和自旋行为。因此，纳米陶瓷可以同时用于催化纳米颗粒的感官和微载体中，也可以用作纳米反应器。特别是，所要求的资金将支持基础研究，以开发制造和功能化熟练的纳米材料，以辅助和可调的智能技术的开发，以支持智能技术的开发。在形成陶瓷材料的过程中，界面上存在方向性的材料流，这可能导致原子晶格中的孔形成 - 这种过程称为柯肯德尔效应，形成了空心的纳米粒子或纳米壳，可以用作填充系统的夹层系统，用于负载，存储，储存，反应性释放的反应性释放。当挖空结构与磁性特性结合使用时，可以使用这种陶瓷纳米材料来开发原位感应设备，能够无线通信与监视接收器。目前，我的研究计划有两个正在进行的研究项目，可以从支持中受益：（a）开发智能包装材料（SPM），以延长可腐烂食品的储存和货架寿命。 SPM将要求空心的陶瓷纳米颗粒封装气体清除材料（例如负责果实成熟的乙烯或负责肉类和乳制品降解的氧气）。一个很好的例子包括铝硅酸盐空心圆柱体（即霍洛伊石粘土纳米管），能够加载和持续释放化学剂；并且（b）开发智能伤口穿刺材料（SWM），以实时监测伤口处理过程，而伤口仍在打扮。 SWM需要嵌入纱布纤维中的磁性纳米陶瓷，这将通过改变其磁性和自旋形式的行为来响应伤口愈合生物标志物（例如温度梯度和气体释放，例如H2O2）。