18 research outputs found

    Fabrication of magneto-mechano-triboelectric energy harvest system and the application to the internet of things

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    Introducing accelerated water-soluble nano-bullet modified nanostructures showed a high output magneto-mechano-triboelectric nanogenerator (MMTEG) to convert an alternating current (AC) magnetic field into electric energy for self-powered Internet of Things (IoT) system. The Aerosol deposition (AD) process accelerated the crash of NaCl salt nanoparticles with high kinetic energy on perfluoroalkoxy (PFA) films to fabricate complex nanomorphology on the triboelectric active surface. The MMTEG generated an open-circuit peak-to-peak voltage (Vpp) and a short-circuit current of 708 V and 277 ฮผA, respectively under an alternating current (AC) magnetic field of 7 Oe. Also, the harvester produced a maximum peak power of 21.8 mW and continuous AC output power of 4.8 mW. A self-powered indoor IoT positioning system was combined with the MMTEG, a power managing circuit, a storage component, and an IoT Bluetooth beacon. MMTEG's electrical energy enabled Bluetooth beacons to continue operation, and after successfully verifying the exact location of the installed wireless positioning system, the indoor location was transferred to the main monitoring computer. Near a 60 Hz power cable connected to the consumer electronics, the MMTEG generated an open-circuit Vpp and a short-circuit current of 330 V and 23 ฮผA, respectively, which were enough to turn on 108 blue light emitting diodes (LEDs).|์‹ค๋‚ด ๋ฌด์„  ์œ„์น˜ ์‹œ์Šคํ…œ์— ์ „๋ ฅ์„ ๊ณต๊ธ‰ํ•˜๊ธฐ ์œ„ํ•ด, ์ˆ˜์šฉ์„ฑ ๋‚˜๋…ธ ํƒ„ํ™˜์„ ์‚ฌ์šฉํ•˜์—ฌ ๋งŒ๋“  ๋‚˜๋…ธ๊ตฌ์กฐ์ฒด๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•˜๋Š” ๊ณ ์„ฑ๋Šฅ์˜ ์ž๊ธฐ-๊ธฐ๊ณ„-๋งˆ์ฐฐ์ „๊ธฐ ๋ณ€ํ™˜ ์—๋„ˆ์ง€ ํ•˜๋ฒ ์Šคํ„ฐ (MMTEG)์— ๋Œ€ํ•œ ์—ฐ๊ตฌ๋ฅผ ํ•˜์˜€๋‹ค. NaCl ๋‚˜๋…ธ ์ž…์ž๋ฅผ Aerosol deposition (AD) ๊ณต์ •์— ์‚ฌ์šฉํ•˜์—ฌ Perfluoroalkoxy (PFA) ํ•„๋ฆ„ ํ‘œ๋ฉด์— ๋‚˜๋…ธ๊ตฌ์กฐ์ฒด๋ฅผ ํ˜•์„ฑํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค. 7 Oe ๊ต๋ฅ˜ ์ž๊ธฐ์žฅ ๋‚ด์—์„œ, MMTEG๋Š” 708 V์˜ ๊ฐœ๋ฐฉํšŒ๋กœ ํ”ผํฌํˆฌํ”ผํฌ ์ „์•• (Vpp)๊ณผ 277 ฮผA์˜ ๋‹จ๋ฝ ํšŒ๋กœ ์ „๋ฅ˜๋ฅผ ์ƒ์„ฑํ–ˆ๋‹ค. ๋˜ํ•œ MMTEG๋Š” 21.8 mW์˜ ์ตœ๋Œ€ ํ”ผํฌ ์ถœ๋ ฅ๊ณผ 4.8 mW์˜ ์—ฐ์† ๊ต๋ฅ˜ ์ถœ๋ ฅ์„ ๋‹ฌ์„ฑํ–ˆ๋‹ค. ์ž๊ฐ€๋ฐœ์ „ ๋ฌด์„  ์‹ค๋‚ด ์œ„์น˜ ์‹œ์Šคํ…œ์€ MMTEG์™€ ์ „๋ ฅ ๊ด€๋ฆฌํšŒ๋กœ, ์ „๋ ฅ์ €์žฅ ์ปคํŒจ์‹œํ„ฐ, IoT ๋ธ”๋ฃจํˆฌ์Šค ๋น„์ฝ˜์„ ํ†ตํ•ฉํ•˜์—ฌ ๊ตฌํ˜„ํ•˜์˜€๋‹ค. MMTEG์˜ ์ „๊ธฐ ์—๋„ˆ์ง€๋Š” ๋ธ”๋ฃจํˆฌ์Šค ๋น„์ฝ˜์˜ ์ง€์†์ ์ธ ์ž‘๋™์„ ๊ฐ€๋Šฅํ•˜๊ฒŒ ํ•˜์˜€๊ณ , ์„ค์น˜๋œ ๋ฌด์„  ์œ„์น˜ ํ™•์ธ์‹œ์Šคํ…œ์˜ ์ •ํ™•ํ•œ ์œ„์น˜๋ฅผ ์„ฑ๊ณต์ ์œผ๋กœ ํ™•์ธํ•œ ํ›„ ์‹ค๋‚ด ์œ„์น˜๋ฅผ ์ฃผ ๋ชจ๋‹ˆํ„ฐ๋ง ์ปดํ“จํ„ฐ๋กœ ์ „์†กํ–ˆ๋‹ค. ๋งˆ์ง€๋ง‰์œผ๋กœ MMTEG๋Š” ๊ฐ€์ „ ์ œํ’ˆ์— ์—ฐ๊ฒฐ๋œ 60 Hz ์ „์›์ผ€์ด๋ธ” ๊ทผ์ฒ˜์—์„œ 330 V์˜ ๊ฐœ๋ฐฉํšŒ๋กœ ํ”ผํฌํˆฌํ”ผํฌ ์ „์•• (Vpp)๊ณผ 23 ฮผA์˜ ๋‹จ๋ฝ ํšŒ๋กœ ์ „๋ฅ˜๋ฅผ ์ƒ์„ฑํ•˜์˜€๊ณ , ์ด๋Š” 108 ๊ฐœ์˜ ์ฒญ์ƒ‰ ๋ฐœ๊ด‘ ๋‹ค์ด์˜ค๋“œ (LED)๋ฅผ ์ผค ์ˆ˜ ์žˆ์—ˆ๋‹ค.1. ์„œ ๋ก  1.1 ์—๋„ˆ์ง€ ํ•˜๋ฒ ์Šคํ„ฐ์˜ ํ•„์š”์„ฑ 1 1.2 ์ž๊ธฐ-๊ธฐ๊ณ„-์ „๊ธฐ ๋ณตํ•ฉ์ฒด ํ•˜๋ฒ ์Šคํ„ฐ 3 1.3 ๋งˆ์ฐฐ์ „๊ธฐ ํ•˜๋ฒ ์Šคํ„ฐ 5 1.4 ๋งˆ์ฐฐ์ „๊ธฐ ํ•˜๋ฒ ์Šคํ„ฐ์˜ ์„ฑ๋Šฅ ํ–ฅ์ƒ์„ ์œ„ํ•œ ํ‘œ๋ฉด์  ํฌ๊ธฐ ์ฆ๊ฐ€ 5 1.5 ๋ณธ ์—ฐ๊ตฌ์˜ ๋ชฉ์  6 2. ์ด ๋ก  2.1 Perfluoroalkoxy์˜ ํŠน์„ฑ 8 2.2 Aluminum ์˜ ํŠน์„ฑ 8 2.3 ๋งˆ์ฐฐ์ „๊ธฐ ํ•˜๋ฒ ์Šคํ„ฐ์˜ ์ž‘๋™ ์›๋ฆฌ 10 2.4 ์‹คํ—˜ ์žฅ๋น„ 12 2.4.1 Planetary milling 12 2.4.2 Aerosol deposition (AD) 14 2.5 ์ธก์ • ์žฅ๋น„ 16 2.5.1 SEM 16 2.5.2 XPS 20 2.5.3 Oscilloscope 22 2.5.4 Sourcemeter 23 3. ์‹คํ—˜ ๋ฐฉ๋ฒ• 3.1 ์ €์ง„๊ณต ํ™˜๊ฒฝ์—์„œ ์นœํ™˜๊ฒฝ์ ์ธ ๊ณต์ •์„ ์ด์šฉํ•œ ๋‚˜๋…ธ๊ตฌ์กฐ์ฒด ์ œ์ž‘ ๋ฐฉ๋ฒ• 25 3.2 ์œ ํ•œ์š”์†Œํ•ด์„์„ ์ด์šฉํ•œ ์†Œ์ž๊ตฌ์กฐ ์„ค๊ณ„ ๋ฐ ํŠน์„ฑ ์˜ˆ์ธก 28 3.3 MME ๋งˆ์ฐฐ์ „๊ธฐ ํ•˜๋ฒ ์Šคํ„ฐ ์ œ์ž‘ ๋ฐ ์ถœ๋ ฅํŠน์„ฑ ํ‰๊ฐ€ 30 4. ์‹คํ—˜ ๊ฒฐ๊ณผ 4.1 MMTEG์˜ ๋‚˜๋…ธ๊ตฌ์กฐ์ฒด 31 4.1.1 MMTEG์˜ ์ž‘๋™ ์›๋ฆฌ 31 4.1.2 MMTEG ์‹œ์Šคํ…œ 33 4.1.3 FE-SEM 35 4.1.4 XPS 39 4.2 MMTEG์˜ ์ „๊ธฐ์  ์ถœ๋ ฅ ์ธก์ • 43 4.2.1 ์ „์••, ์ „๋ฅ˜, ์ „๋ ฅ ํŠน์„ฑ 43 4.2.2 ๋‚ด๊ตฌ์„ฑ ํ‰๊ฐ€ 53 4.3 ์œ ํ•œ์š”์†Œํ•ด์„์„ ์ด์šฉํ•œ ์†Œ์ž ๊ตฌ์กฐ ์„ค๊ณ„ ๋ฐ ํŠน์„ฑ 55 4.3.1 ์†Œ์ž ๊ตฌ์กฐ ์„ค๊ณ„ 55 4.3.2 ์ „๊ธฐ์  ํŠน์„ฑ ์˜ˆ์ธก 60 4.4 IoT ๋””๋ฐ”์ด์Šค ๊ตฌ๋™ ๋ฐ๋ชจ 62 4.5 60 Hz์—์„œ MMTEG์˜ ๊ตฌ๋™ 66 5. ๊ฒฐ๋ก  74 ์ฐธ๊ณ ๋ฌธํ—Œ 75Maste
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