Effects of thickness on switching current for (Pb 0.97 La 0.02 )(Zr 0.95 Ti 0.05 )O 3 antiferroelectric films under thermo-electric coupled field

Micro & nano letters

article

Kun An¹  Erwei Wang²  Jian He²  Xiujian Chou²  Chenyang Xue²  Wendong Zhang² 

[1] School of Computer Science and Control Engineering, North University of China;National Key Laboratory for Electronic Measurement Technology, North University of China

关键词: lead compounds;    lanthanum compounds;    antiferroelectric materials;    ferroelectric thin films;    sol-gel processing;    ferroelectric switching;    thermoelectricity;    current density;    thickness effects;    thermoelectric coupled field;    homogeneous antiferroelectric thick films;    compact antiferroelectric thick films;    sol-gel processing;    switching current density;    intelligent microsensors;    intelligent microactuators;    (Pb0.97La0.02)(Zr0.95Ti0.05)O3;    Pt-Ti-SiO2-Si;   

DOI  :  10.1049/mnl.2016.0040

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background and Aims: hypotensive anesthesia is preferred in craniotomy. Current study was conductedto evaluate the effects of oral clonidine premedication upon hemodynamic status, dural tightness andquality of anesthesia using 3 point scoring system in patients scheduled for craniotomy under generalanesthesia.Methodology: Amongst twenty two selected cases they were grouped equally in this randomized single– blind comparative study. Group A and B patients received sugar tablet and oral clonidine 3 μg/kg as apremedication respectively. Monitoring of hemodynamic variables like heart rate, systolic arterial pressure,diastolic arterial pressure, mean arterial pressure, SpO2, ETCO2 and dural tightness were performed.Results: Diastolic arterial pressure was significantly low in Group B during positioning, performingburr hole and during dura incision. Mean arterial pressure was highly significant for Group B duringpositioning. Heart rate change was significantly high for Group B during burr hole. Regarding duraltightness, 10 patients in Group B and 6 in Group A had no dural swelling. 1 patient in Group B and 5patients in Group A had minimal swelling and surgery continued. Once all results b being assessed using‘Three point scoring system’, it became highly significant in Group B with respect to Group A.Conclusion: Oral clonidine premedication provides optimal hemodynamic stability and good neurosurgicalcomprising heart rate, mean arterial pressure and dural tightness. ‘Three point scoring system’seems to be an effective tool for intra-operative monitoring of patients undergoing supra-tentorialcraniotomy.

【 授权许可】

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