Detection via Collective Excitation of Confined Charge

通过约束电荷的集体激发进行检测

• 批准号: 0702716
• 负责人: Bahram Nabet
• 金额: --
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0702716&HistoricalAwards=false
• 关键词: Detection; via; Collective; Excitation; Confined

Intellectual Merits: In this project, the collective response of a dense cloud of confined charge is used as the basis for a number of high sensitivity detection applications including optical detectors, charged particle detectors, and the detectors of electromagnetic radiation in the terahertz frequency range. Optical detectors will be fabricated which circumvent the most limiting constraint on speed of device, the transit time of the carriers, by collecting them in a reservoir of charge and detecting the subsequent charge density waves. Charged-particle detectors will be designed, fabricated and analyzed which work on the same basis of the perturbation of such a reservoir. Coupling of electromagnetic radiation in the terahertz region and such devices will be studied and is expected to lead to the development of sensitive detectors of such radiation. These effects are enhanced with increase in the degree of confinement; as a result schemes for designing one-dimensional devices for photon and charged particle detection will be pursued. Successful completion of this project will have a broad scientific impact on the study of the collective response of electrons with application areas ranging from electron microscopy to optical communications, and biomedical engineering. Broader impacts: The broader educational impact of this work will be magnified by building on a strong Drexel tradition of involving undergraduates in research at early stages of their education, and will leverage a number of NSF-sponsored programs including two Research Experiences for Undergraduates programs, including one specifically involving sensor development, a Research Experiences for Teachers site, an Integrative Graduate Education and Research program in nanotechnology and a GK-12 graduate fellowship and educational outreach program. Both undergraduates and graduates will be involved in growth, characterization, design, fabrication, and analysis of these nanostructured materials. In addition, much of the previous research leading to the present work is based on international collaboration and will be continued as a result of NSF support.

智力优势：在该项目中，密集的受限电荷云的集体响应被用作许多高灵敏度探测应用的基础，包括光学探测器、带电粒子探测器和太赫兹频率范围内的电磁辐射探测器。光学检测器将被制造，它绕过了对设备速度的最限制性约束，载流子的渡越时间，通过将它们收集在电荷库中并检测随后的电荷密度波。带电粒子探测器将被设计、制造和分析，其工作原理与这种储层的扰动相同。将研究太赫兹区域的电磁辐射与此类设备的耦合，预计这将导致开发此类辐射的灵敏探测器。 这些效果增强与限制的程度的增加，因此，设计用于光子和带电粒子检测的一维设备的计划将被追求。该项目的成功完成将对电子集体响应的研究产生广泛的科学影响，其应用领域从电子显微镜到光通信和生物医学工程。更广泛的影响：这项工作的更广泛的教育影响将通过建立在一个强大的德雷克塞尔大学的传统，让本科生在研究的早期阶段，他们的教育，并将利用一些NSF赞助的计划，包括两个研究经验的本科生计划，包括一个专门涉及传感器的发展，研究经验的教师网站，纳米技术的综合研究生教育和研究计划以及GK-12研究生奖学金和教育推广计划。 本科生和研究生都将参与这些纳米结构材料的生长，表征，设计，制造和分析。此外，导致目前工作的许多以前的研究是基于国际合作，并将继续作为NSF支持的结果。