Acquisition of a New Scanning Electron Microscope and Energy Dispersive Spectrometry System at the American Museum of Natural History

美国自然历史博物馆购置新型扫描电子显微镜和能量色散光谱测量系统

• 批准号: 9724454
• 负责人: William Barnett
• 金额: $ 37.44万
• 依托单位: American Museum Natural History
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9724454&HistoricalAwards=false
• 关键词: Acquisition; New; Scanning; Electron; Microscope

We request funds to replace our aging scanning electron microscope (SEM) facility with new instrumentation that has the capabilities to meet the evolving research and educational requirements at the American Museum of Natural History (AMNH). The high magnification, great detail, depth of field, and analytical capabilities inherent to scanning electron microscopy are crucial to the investigation of systematics, mineralogy, and other research foci at the AMNH. The current SEM/EDS system, a Zeiss DSM 950 and Link AN10000, is in continuous use by a varied population of researchers. It was an innovative digital design at the time, but is now worn, outdated, and not upgradeable. This system does not meet research and educational requirements including: 1) imaging uncoated biological specimens, 2) high magnification imaging in both secondary and backscattered electron modes, 3) production and storage of high resolution digital image files, 4) separation of light elements, 5) ease of operation for a diverse user population, 6) industry-standard computing platforms that can be upgraded and have third party application support, 7) network and Internet operation for collaboration and education, and 8) publication quality printing. A new isolation system will suppress of vibrations at magnifications above 20,000x. Secondary electron imaging of uncoated biological specimens, particularly taxonomic types, is important in a museum setting because these specimens are unique and cannot be coated. Backscattered imaging at high magnification and high accelerating voltage operation are critical for mineralogical research. These diverse requirements can now be met by field emission FE) instruments. The ability to greatly increase magnification (FE scopes are rated to 600,00'0~ will extend the frontiers of scientific research at the AMNH. FE instruments have chamber sizes adequate for large specimens and are easy to operate. Current SEM and EDS systems are now migrating to standa rd computing platforms that are easy to use, produce high-resolution digital images, and operate with other instruments over networks and the Internet. The new facility will provide state-of-the-art instrumentation that will meet both new and longstanding research and educational requirements for a very large user population associated with some of the most important natural history collections in the world (in excess of 37 million specimens). The AMNH has committed, and will continue to commit, staff and resources to the operation of the SEM facility. The SEM will be available to all affiliated personnel who undertake research, research training, or education. 3

我们请求资金用新仪器替换老化的扫描电子显微镜（SEM）设备，以满足美国自然历史博物馆（AMNH）不断发展的研究和教育要求。扫描电子显微镜的高倍率、高细节、景深和固有的分析能力对美国国立卫生研究院的系统学、矿物学和其他研究重点的研究至关重要。目前的SEM/EDS系统是蔡司DSM 950和Link AN10000，被不同的研究人员持续使用。它在当时是一种创新的数字设计，但现在已经磨损，过时，无法升级。该系统不符合研究和教育要求，包括：1)无涂层生物标本成像，2)二次和背散射电子模式下的高倍率成像，3)高分辨率数字图像文件的制作和存储，4)轻元素的分离，5)不同用户群体的易于操作，6)可升级并具有第三方应用支持的行业标准计算平台，7)协作和教育的网络和互联网操作，8)出版质量的印刷。一种新的隔离系统可以抑制放大倍数超过20,000倍的振动。二次电子成像的生物标本，特别是分类类型，是重要的在博物馆设置，因为这些标本是独特的，不能被涂层。高倍率和高加速电压下的后向散射成像是矿物学研究的重要手段。这些不同的要求现在可以通过场发射FE)仪器来满足。大大提高放大倍率的能力（FE瞄准镜的额定倍率为60万'0~）将扩展AMNH科学研究的前沿。FE仪器的腔室尺寸足以容纳大型标本，并且易于操作。目前的SEM和EDS系统正在迁移到易于使用的标准计算平台，生成高分辨率数字图像，并通过网络和互联网与其他仪器一起操作。新设施将提供最先进的仪器，以满足与世界上一些最重要的自然历史收藏品（超过3700万标本）相关的大量用户的新的和长期的研究和教育需求。AMNH已承诺，并将继续承诺，人力和资源的SEM设施的运作。SEM将提供给所有从事研究、研究培训或教育的附属人员。3