一种由负载碳纳米管和富勒烯C60的导电静电纺丝聚己内酯纤维制成的电阻式电子辐照微传感器
A resistive electron irradiation microsensor made from conductive electrospun polycaprolactone fibers loaded with carbon nanotubes and fullerene C60
AI总结：
本研究利用负载碳纳米管和C60的静电纺丝聚己内酯纤维制成电子辐照微传感器，其电导率随电子束辐照永久增加，最大电导率依赖加速电压，可用于β辐射探测。
摘要：
本研究制备并表征了电子辐射探测器微器件。该器件由负载多壁碳纳米管和富勒烯C60的聚己内酯导电静电纺丝垫沉积在金叉指微电极上构成。在暴露于加速电压为10和20 keV、剂量从0.02 pC/μm²开始的电子束辐照后，这些器件能够永久性地增加其电导率。这一现象可归因于C60捕获并稳定负电荷的能力，从而有助于提高聚合物复合材料的电导率。器件在0.22至0.27 pC/μm²的辐照剂量之间达到最大电导率，且该最大值依赖于电子加速电压。进行了蒙特卡洛模拟，以解释电导率对电子在聚合物复合材料中穿透深度的依赖性。此外，在20 keV下辐照的器件在辐照后保持了其最终电导率，而在10 keV下辐照的器件在辐照后6天电导率有所增加。富勒烯被证明在聚合物复合材料中充当高效的电子清除剂并有助于其电导率，该微器件具有作为β辐射传感器的潜在应用。
英文摘要：
In this work an electron radiation detector microdevices were fabricated and characterized. The devices consisted of a conductive electrospun mat made of polycaprolactone loaded with multiwalled carbon nanotubes and fullerene C60 deposited onto gold interdigitated microelectrodes. They were capable of permanently increase their conductivity upon exposure to electron beam irradiation from 0.02 pC/μm2 accelerated at 10 and 20 keV. This phenomenon could be explained due to the ability of C60 to trap and stabilize negative charges and thus contribute to the conductivity of the polymer composite. The devices achieved their maximum conductivity at an irradiation between 0.22 and 0.27 pC/μm2 and this maximum was dependent of the electron acceleration. Montecarlo simulations were performed to explain dependence as function of electron penetration in the polymer composite. Moreover, the devices irradiated at 20keV maintained their final conductivity and the devices irradiated at 10keV increased their final conductivity after 6 days from irradiation. Fullerenes proved to act as highly efficient electron scavengers within the polymer composite and contribute to its conductivity, and the microdevice has potential application as beta radiation sensors.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
