PMN-PT lead magnesium niobate-lead titanate,
上边都是无机的
下边应该是有机的吧
PVDF及其聚合物 polyvinylidene fluoride or its copolymers
电纺丝工艺能生产P(VDF-TrFE) 但是很复杂且昂贵。
微纳米打印工艺: nanoimprinting。
The freestanding nanowire array was synthesized by nanoimprinting via infiltration of P(VDF-TrFE) polymer melt into the anodic aluminum oxide (AAO) nanochannels and subsequent removal of the template
优点:能通过商业中获取不同大小的纳米模板
pyroelectric material and PEDOT: PSS conducting polymer as the top electrode, as shown in Fig. 1(e).
材料表征
X-RD图像
SEM图像
电压测量: 示波器
电流:low-noise current preamplifier (Model No. SR570, Stanford Research Systems, Inc.).
红外激光器(XI’AN SAPLING LASER)周期性改变温度
thermal infrared imager (FLIR SC7300-M)热红外成像仪记录温度数据
连接10~100兆欧的电阻,测试输出电压
在测量输出时: 用的是水平弯曲和拉直,没在竖直方向上施加形变
测量的变量: 形变大小,形变速度: 没有给出过多的解释
测量热电效应: pyroelectric
激光器周期性改变温度,热红外成像仪实时监测温度。
解释:
Once the infrared radiation was switch on, the oscillation of the dipoles in the P(VDF-TrFE) is increased due to the absorption of thermal energy, which causes the net surface polarization at the top electrode to decrease, resulting in a positive pyroelectric output.
Similarly, turning off the infrared laser causes cooling of polarized regions in the P(VDF-TrFE), which leads to an enhanced surface polarization, and is recorded as a negative peak.