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应力施加装置

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应力施加装置

产品名称: 低温单轴应力施加装置

产品型号: CS100 CS110 CS120 CS130

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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

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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。