Characterization of Graphene Composites**********

碳的不同排列和组合可以产生各种具有独特物理、化学和电学性质的化合物。包括富勒烯(3D)、一维(1D)碳纳米管和二维(2D)石墨烯在内的石墨化纳米材料是下一代电子器件的诱人材料。根据它们的几何形状，这些碳同素异形体可以作为优秀的导体、半导体甚至绝缘体。碳基设备为下一代电子产品提供了几个有吸引力的特征。这些材料可以使用溶液工艺分散和沉积，并且可以很容易地集成到已经为现有材料开发的工具和工艺中，例如卷到卷制造。最后，它们具有长期的化学和温度稳定性，可能是任何其他材料无法比拟的。特别是，石墨烯一直是变革性研究的主题。然而，由于生产统一的单层石墨烯的难度和相关成本较高，它尚未得到广泛应用。剥离的石墨烯纳米片(层叠的石墨烯厚度从1到15 nm不等)已经成为单片石墨烯的低成本替代品，但它们在电子应用方面的电、光、化学和机械性能尚未得到充分研究。*在这项工作中，目标是全面研究由石墨创新技术公司(GIT)批量生产的这些石墨烯纳米片的电、化学和机械性能。我们将通过评估这种新材料系统在集成电路中的电气和化学兼容性来评估其在集成电路中的可行性。此外，作为一种2D材料，石墨烯纳米片薄膜具有固有的机械柔性，可以以最低的成本集成在各种表面上，从而实现大面积系统部署。如果他们能够批量生产基于血小板的薄片，而这些薄片具有与纳米管或均质薄片类似的特性，Git将拥有一种比这两种产品都便宜得多的产品，并将颠覆石墨市场。对这些材料的表征甚至可能揭示出具有商业价值的新特性。

The different arrangements and combinations in which carbon can be configured produce a wide variety of compounds that have unique physical, chemical, and electrical properties. Graphitic nanomaterials including fullerenes (3D), one-dimensional (1D) carbon nanotubes and two-dimensional (2D) graphene-based sheets are attractive materials for next generation electronic devices. These carbon allotropes can behave as excellent conductors, semiconductors or even insulators depending on their geometries. Carbon-based devices offer several attractive features for use in next generation electronics. These materials can be dispersed and deposited using solution processes, and they can be easily integrated into tools and processes already developed for established materials, such as roll-to-roll manufacturing. Finally, they have long term chemical and temperature stability potentially unmatched by any other materials. In particular, graphene has been the subject of transformative research. However, due to the difficulty and the high cost associated in producing uniform single sheets of graphene, it hasn't been widely deployed yet. Exfoliated Graphene nanoplatelets (stack of graphene ranging from 1 to 15 nm thick) have emerged as a low cost alternative to single separated sheets of graphene, but their electrical, optical, chemical and mechanical properties in terms of electronic applications haven't been fully investigated. ****In this work, the objective is to fully investigate the electrical, chemical and mechanical properties of these graphene nanoplatelets mass-produced by Graphite Innovation and Technologies (GIT). We will assess the viability of this novel material system in integrated circuits by evaluating its electrical and its chemical compatibility with established technologies. Furthermore, as a 2D material, graphene nanoplatelets films are inherently mechanically flexible and could be integrated on various surfaces at minimal cost, allowing large area systems deployment. If they can mass produce platelet-based sheets, and these have similar properties to nanotubes or those of homogenous sheets, GIT will have a product that is significantly cheaper than either and will disrupt the graphite market place. The characterization of these materials may even reveal new properties of commercial value.****