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

我们希望在邻近感应超导、量子霍尔效应、噪声、用于快速电子和传感器的高频特性(包括纳米机械谐振器)、自旋输运分子结、分子晶体管和拓扑绝缘体等方面开展研究。为了探索纳米结构的最基本的电子性质，需要最低的温度。无低温稀释冰箱是一种功能强大的多功能系统，无需任何低温即可达到非常低的温度(20MK)。运行这种装置不需要昂贵的氦气。运行或维护系统不需要额外的个人成本。鉴于其巨大的样本空间，为各种研究目的定制自制是可能的。这对于需要靠近被测样品的额外大型电子设备的高频实验尤其重要。如今，使用强大的磁铁为系统降温是可能的。无低温稀释制冷机使用脉冲管，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。它将使我们能够探索石墨烯和其他分子系统等纳米结构的基本性质。

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.