Providing Access to Scanning Electron Microscopy

提供扫描电子显微镜

• 批准号: 0216506
• 负责人: Angel Valdes
• 金额: $ 20.28万
• 依托单位: Los Angeles County Museum of Natural History Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-15 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216506&HistoricalAwards=false
• 关键词: Providing; Access; Scanning; Electron; Microscopy

PROVIDING ACCESS TO SCANNING ELECTRON MICROSCOPYA grant has been awarded to Drs. Angel Valdes, Brian Brown, Kirk Fitzhugh, Gordon Hendler and Joel Martin at the Natural History Museum of Los Angeles County (LACM) to acquire a Scanning Electron Microscope (SEM). The SEM is a fundamental research tool in biological and physical sciences, offering a level of resolution (magnifications over 300,000 times) not possible with light microscopy, which is limited to magnifications no greater than 1,000 times. A state-of-the-art SEM with variable pressure capability and an Energy Dispersive Spectrometry unit (EDS) will be purchased. The variable pressure capability is necessary to allow examination of uncoated samples, which is critical when dealing with type material or delicate specimens. The EDS unit will be essential for geological and archeological research. For most biological samples a sputter coater will be required. We selected a high resolution sputter coater that utilizes noble targets such as gold, gold/palladium and platinum.The SEM will constitute the core of a new research unit shared by seven research departments including Invertebrate Zoology, Vertebrate Zoology, Botany, Earth Sciences, Invertebrate Paleontology, Vertebrate Paleontology and Anthropology. Another important component of the SEM usage at the LACM will be the identification of collection materials. Staff in the Marine Invertebrate Biodiversity Processing Center, Earth Studies, and Vertebrate Paleontology departments will be using the SEM on a regular basis for the identification of minerals, meteorites and biological specimens. The SEM will also be used by the Education Division to enhance public understanding of science and highlight the work of museum scholars. Images produced using the SEM will be a component of future exhibits, curriculum materials, and web sites produced for educational purposes. Education staff will be able to arrange tours to the SEM facility with research staff who will provide access to the machine and explanations of the application of the SEM technology to natural sciences. The installation of a SEM at LACM will offer a unique opportunity for integration of on-going research programs and education activities as a dynamic, interactive exhibit component. The SEM facility will also provide a tool for affiliated research associates and visitors, enhancing cooperative research activities with regional, national and international colleagues. The SEM will be a critical component of this training process and will provide the LACM students with the necessary tools for their research in situ.

洛杉矶县自然历史博物馆（LACM）的安吉尔·瓦尔德斯博士、布赖恩·布朗博士、柯克·菲茨休博士、戈登·亨德勒博士和乔尔·马丁博士获得了一笔赠款，用于购买扫描电子显微镜（SEM）。SEM是生物和物理科学的基础研究工具，提供光学显微镜无法实现的分辨率（放大倍数超过30万倍），光学显微镜的放大倍数不超过1,000倍。将购买一台具有可变压力能力的最先进的扫描电镜和一台能谱仪。可变压力能力是必要的，以允许无涂层样品的检查，这是至关重要的，当处理类型的材料或微妙的标本。EDS装置将是地质和考古研究的关键。对于大多数生物样品，将需要溅射镀膜机。我们选择了一台高分辨率溅射镀膜机，它使用了金、金/钯和铂等贵金属靶。扫描电镜将成为一个新的研究部门的核心，该部门由无脊椎动物学、脊椎动物学、植物学、地球科学、无脊椎动物古生物学、脊椎动物古生物学和人类学七个研究部门共享。在LACM使用SEM的另一个重要组成部分将是收集材料的识别。海洋无脊椎动物生物多样性处理中心、地球研究和脊椎动物古生物学部门的工作人员将定期使用扫描电镜识别矿物、陨石和生物标本。教育部亦会利用该系统，加强公众对科学的认识，以及宣传博物馆学者的工作。使用SEM制作的图像将成为未来展览、课程材料和教育网站的组成部分。教育工作人员将能够安排图尔斯参观扫描电镜设施与研究人员谁将提供访问机器和解释的应用扫描电镜技术的自然科学。在LACM安装SEM将提供一个独特的机会，将正在进行的研究计划和教育活动整合为一个动态的，互动的展览组件。SEM设施还将为附属研究人员和访问者提供一个工具，加强与区域、国家和国际同事的合作研究活动。SEM将是这一培训过程中的一个重要组成部分，并将为LACM学生提供必要的工具，他们在现场的研究。