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3He-4He-Entmischungskryostat (cryo-free)

3He-4He分离低温恒温器（免冷冻）

基本信息

批准号：
211485428
负责人：
金额：
--
依托单位：
Karlsruher Institut für Technologie (KIT)
依托单位国家：
德国
项目类别：
Major Research Instrumentation
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至无数据
项目状态：
未结题

来源：
https://gepris.dfg.de/gepris/projekt/211485428?language=en
关键词：
3He 4He Entmischungskryostat cryo free

项目摘要

We wish to develop studies on proximity induced superconductivity, quantum hall effect, noise, high-frequency properties (including nanomechanical resonators) for fast electronics and sensors, spin transport molecular junctions, molecular transistors and topological insulators. In order to probe the most fundamental electronic properties of nanostructure, the lowest temperatures are needed. A Cryo-free dilution refrigerator is a powerful and versatile system that allows reaching very low temperature (20 mK) without the need of any cryogenics. No expensive helium is needed to run such apparatus. No additional personal cost is needed to run or maintain the system. Given its large sample space, home made customization for various research purposes is possible. It is particularly important for high frequency experiments which require additional large electronic devices close to the measured sample. Nowadays, cooling down the system with a powerful magnet is possible. Cryo-free dilution refrigerator works with pulse tubes that are mechanically decoupled from the sample flange avoiding vibrations. This system allows full automation of experiments from room temperature down to base temperature, without any extra-maintenance of the device. It will allow us to probe the fundamental properties of nanostructures like graphene and other molecular systems.

我们希望发展邻近感应超导，量子霍尔效应，噪声，高频特性（包括纳米机械谐振器）的快速电子学和传感器，自旋输运分子结，分子晶体管和拓扑绝缘体的研究。为了探测纳米结构最基本的电子性质，需要最低的温度。免冷冻稀释制冷机是一种功能强大的多功能系统，无需任何低温技术即可达到极低温度（20 mK）。运行这种装置不需要昂贵的氦气。不需要额外的个人成本来运行或维护系统。鉴于其大的样本空间，家庭定制各种研究目的是可能的。这对于需要在被测样品附近增加大型电子设备的高频实验尤为重要。如今，可以使用强大的磁体冷却系统。免冷冻稀释制冷机与脉冲管一起工作，脉冲管与样品法兰机械分离，避免振动。该系统允许从室温到基础温度的实验完全自动化，而无需对设备进行任何额外维护。它将使我们能够探测石墨烯等纳米结构和其他分子系统的基本特性。