کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7138832 | 1462018 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High sensitivity optical fiber sensors for simultaneous measurement of methanol and ethanol
ترجمه فارسی عنوان
سنسورهای فیبر نوری حساسیت بالا برای اندازه گیری همزمان متانول و اتانول
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
ترکیبات آلی فرار، سنسور فیبر نوری، فیبر کانونی سیلیکا سل ژل، قرمز نیل،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
High sensitivity volatile organic compounds (VOCs) sensors based on a tapered small core single mode fiber (TSCSMF) and a microfiber coupler (MFC) are reported. The TSCSMF had a waist diameter of â¼5.1â¯Î¼m and the MFC had a waist diameter of â¼1.9â¯Î¼m each and both were fabricated using a customized microheater brushing technique. Silica based materials containing immobilized Nile red prepared by sol-gel method with two different recipes (recipe I and recipe II) are investigated. Initially recipe I based coating materials were applied to the surfaces of the TSCSMF and MFC. The experimental results show that the sensor based on an MFC shows much better sensitivities of â0.130â¯nm/ppm and â0.036â¯nm/ppm to ethanol and methanol than those of the TSCSMF based sensor. The corresponding minimum detectable concentration change of the MFC based sensor are calculated to be â¼77â¯ppb and â¼281â¯ppb to ethanol and methanol respectively. Both sensors are demonstrated fast response times of less than 5â¯min, while the recovery times varied from 7â¯min to 12â¯min. In addition, another TSCSMF based sample (â¼7.0â¯Î¼m) coated with a mixed layer of sol silica and Nile red prepared by recipe II was fabricated to achieve simultaneous measurement of ethanol and methanol, employing a second-order matrix approach.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 271, 15 October 2018, Pages 1-8
Journal: Sensors and Actuators B: Chemical - Volume 271, 15 October 2018, Pages 1-8
نویسندگان
Dejun Liu, Rahul Kumar, Fangfang Wei, Wei Han, Arun Kumar Mallik, Jinhui Yuan, Shengpeng Wan, Xingdao He, Zhe Kang, Feng Li, Chongxiu Yu, Gerald Farrell, Yuliya Semenova, Qiang Wu,