مجله فصل مشترک ها، لایه های نازک و سیستم های با بعد کم
قالب آلومینای نانو متخلخل با حفره های قیفی شکل
نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه الزهرا
چکیده
در این پژوهش قالب آلومینای متخلخل با حفره های نانومتری قیفی شکل با استفاده از آندایزاسیون دو مرحله ای با ولتاژ های مختلف به روش الکتروشیمیایی ساخته شد. با آنالیز FE-SEM مورفولوژی حفره های قالب تعیین شد که تشکیل حفره های قیفی شکل بر اثر کاهش ولتاژ در آندایزاسیون دوم را نشان می داد. در این فرآیند با ایجاد حفره های قیفی شکل، توانستیم تخلخل و سطح ویژه قالب آلومینای متخلخل را افزایش دهیم که می تواند ظرفیت الکتریکی قالب را به عنوان دی الکتریک خازن از 6 pF به 50 pF در فرکانس 50 kH افزایش دهد. استفاده از این قالب به عنوان دی الکتریک خازن روش موثری برای بهبود ظرفیت خازن ها خواهد بود. همچنین با اندازه گیری ظرفیت الکتریکی و اتلاف نمونه، رسانندگی در فرکانس های مختلف محاسبه شد.
کلیدواژه‌ها
موضوعات
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