A new device for exploring the landscape of microscopic interactions

探索微观相互作用景观的新设备

• 批准号: EP/V048945/1
• 负责人: Clive Speake
• 金额: $ 25.78万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FV048945%2F1
• 关键词: new; device; exploring; landscape; microscopic

Presently there are two instruments that are commonly used for measuring weak forces: the classical torsion balance which was perfected by Cavendish in the 18th century and the atomic force microscope (AFM). The former excels at exquisite measurements of forces that have interaction ranges of more than 100 micrometers or so, and the latter is employed to measure interactions over length scales of less than 1 micrometer. The torsion balances have a sensitivity which is, by some measures, up to 6 orders of magnitude superior to that of the AFM. There is therefore a significant gap in our understanding of forces with ranges of the order of 100 micrometers and less. We will construct and demonstrate a novel hybrid device that will fill this gap. The new device will be based on a 3-wire suspension that will allow precision positioning of sample substrates using standard technologies. We will demonstrate the new instrument by measuring short range forces such as the Casimir or van der Waals interaction.

目前，有两种常用的仪器用于测量弱力：世纪由卡文迪什完善的经典扭秤和原子力显微镜（AFM）。前者擅长于精确测量具有超过100微米左右的相互作用范围的力，后者用于测量小于1微米的长度尺度上的相互作用。扭转天平的灵敏度，通过某些措施，高达6个数量级优于原子力显微镜的上级。因此，有一个显着的差距，我们的理解力的范围为100微米和更少的顺序。我们将构建和展示一种新的混合装置，将填补这一空白。新设备将基于3线悬挂，允许使用标准技术精确定位样品基板。我们将通过测量Casimir或货车德瓦耳斯相互作用等短程力来演示新仪器。