Cryostrain: a cryogenic uniaxial strain cell

Apply continuously tunable tensile and compressive strains within a cryogenic environment.
Suitable for use with scanning probe and confocal microscopy, x-ray and neutron scattering, resistivity, susceptibility and many other measurement techniques.
This product is a component for use with a wide range of commercial or home-built cryogenic measurement systems.  

Product Overview
 
· 可对样品施加精确的、连续可调的压缩和拉伸应变，无机械回差。
· 高度紧凑，最小的产品（CS100）可以垂直或水平安装在1”（26 mm）孔内（可用于PPMS^®）
· 温度补偿—施加的应变可以在很宽温度范围内保持恒定。
· 工作温度低于1 K，可用于高磁场。
· 不同角度接触样品，适用于低温扫描探针显微镜

 

Model Number		CS100	CS110	CS120	CS130
产品规格	长度 高度 重量	24 mm 13 mm 24g	28 mm 13 mm 26g	32.5 mm 13 mm 28g	37 mm 13 mm 30g
最大样品弹力系数1		5 × 106 N/m	5 × 106 N/m	3.5× 106 N/m	2.6 × 106 N/m
最大样品尺寸2	横截面 样品长度	0.05 mm2	0.04 mm2	0.03 mm2	0.02 mm2
工作温度		Less than 300mK-400K
零负载时最大应变位移	室温环境 (at -20V/+120V) 低温环境 ( at ±200 V)	±6 µm (12 µm total range) ±3 µm( 6 µm total range)	±7 µm (15 µm total range) ±4 µm( 8 µm total range)	±13µm (25 µm total range) ±7 µm( 14 µm total range)	±17 µm (34µm total range) ±10 µm( 20 µm total range)
材质	外壳 形变结构	Titanium, unalloyed (Grade 2) PZT ceramic
连接部件	线缆 接口	4 HV cables3 2 coaxial
电容传感器		电容分辨率0.1 nm至1 nm，取决于您所使用的是AH2550A，AH2700A或是其他的电容桥

¹这些最大值仅对应电池用于其最大室温位移时，对于较小的位移可以使用更僵硬的样品，有关指导，请参见下图。
²基于典型杨氏模量中关于弹簧常数的预测样品的横截面积，更长的样本可能，但最大应用的应变将减少（应变调谐器位移保持相同）。
³常规导线可使用高达〜±200 V电压，更多细节信息请联系我们进行咨询。
 
Applications

Match theory to experiment

Significant recent research effort has been spent investigating the electronic and magnetic properties of materials when subjected to uniaxial strains because it allows a convenient way to compare structure/property relationships as predicted from theory experimentally. See Uniaxial Strain in Condensed Matter Physics.

Compatible with a wide range of probes

The cryostrain cell is the ideal component for your cryogenic measurement system -  compatible with a wide variety of different probes, including x-ray diffraction, scanning probe microscopy, optical imaging and electrical measurements.

Complementary to existing techniques

The cryostrain cells is an ideal companion to diamond anvil cells, providing a complementary technique while also offering better sample access, positive and negative stresses, and in-situ tunability.

A tried and tested technology

The Cryostrain family is based on a technology that has been used in an laboratory environment for more than two years leading to several publications, including a recent high profile paper in the journal science.

操作原理
如左侧图中的CS100，显示了当样品经受正应变和负应变时，应变计中的运动。为了演示的目的，图中所示的移动经过高度夸张处理。



温度补偿
压电陶瓷在冷却时会沿着其轮询方向延长，这种延长比压电陶瓷行程的长度长数倍，意味着除非采取特殊处理，否则当温度改变时，无法适当地控制应变。低温应变系列的应变计克服了这一问题，压电陶瓷的特殊布置抵消了热膨胀，使应变不受压电陶瓷的热延伸影响。



拓展范围
除了热补偿之外，具有数对彼此对立工作的压电陶瓷，意味着对比直接胶合到样品上单个压电叠堆可以产生更高的位移; 考虑到本质上短压电行程长度有价值的改进。应变样品非常容易接近,将样品安装在可以最大化角度进入的顶部表面上。例如，当样品安装在应变单元上时，扫描探针尖端可以扫描表面。