• 제목/요약/키워드: Integrated Magnetic

검색결과 283건 처리시간 0.026초

스퍼터링 방법으로 증착된 하층 NiFe 코어를 갖는 박막인덕터의 CMOS 집적화 공정 (Fully CMOS-compatible Process Integration of Thin film Inductor with a Sputtered Bottom NiFe Core)

  • 박일용;김상기;구진근;노태문;이대우;김종대
    • 한국전기전자재료학회논문지
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    • 제16권2호
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    • pp.138-143
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    • 2003
  • A double spiral thin-film inductor with a NiFe magnetic core is integrated with DC-DC converter IC. The NiFe core is deposited on a polyimide film as the thinckness of NiFe is 2.5~3.5 ${\mu}$m. Then, copper conductor line is deposited on the NiFe core with double spiral structure. Process integration is performed by sequential processes of etching the polyimide film deposited both top and bottom of the NiFe core and electroplation copper conductor line from exposed metal pad of the DC-DC converter IC. Process integration is simplified by elimination planarization process for top core because the proposed thin-film inductor has a bottom NiFe core only. Inductor of the fabricated monolithic DC-DC converter IC is 0.53 ${\mu}$H when the area of converter IC and thin-film inductor are 5X5$\textrm{mm}^2$ and 3.5X2.5$\textrm{mm}^2$, respectively. The efficiency is 72% when input voltage and output voltage are 3.5 V and 6 V, respectively at the operation frequency of 8 MHz.

Design of a CubeSat test platform for the verification of small electric propulsion systems

  • Corpino, Sabrina;Stesina, Fabrizio;Saccoccia, Giorgio;Calvi, Daniele
    • Advances in aircraft and spacecraft science
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    • 제6권5호
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    • pp.427-442
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    • 2019
  • Small satellites represent an emerging opportunity to realize a wide range of space missions at lower cost and faster delivery, compared to traditional spacecraft. However, small platforms, such as CubeSats, shall increase their actual capabilities. Miniaturized electric propulsion systems can provide the satellite with the key capability of moving in space. The level of readiness of miniaturized electric propulsion systems is low although many concepts have been developed. The present research intends to build a flexible test platform for the assessment of selected small propulsion systems in relevant environment at laboratory level. Main goal of the research is to analyze the mechanical, electrical, magnetic, and chemical interactions of propulsion systems with the modern CubeSat-technology and to assess the performance of the integrated platform. The test platform is a 6U CubeSat hosting electric propulsion systems, providing mechanical, electrical and data interfaces, able to handle a variety of electric propulsion systems, thanks to the ability to regulate and distribute electric power, to exchange data according to several protocols, and to provide different mechanical layouts. The test platform is ready to start the first verification campaign. The paper describes the detailed design of the platform and the main results of the AIV activities.

교모세포종에 대한 통합암치료의 치료 효과 증례보고 (A Case Report on the Therapeutic Effect of Integrated Cancer Therapy for Glioblastoma Multiforme)

  • 양진성;장혁준;송시연;박지혜;박소정;유화승
    • 대한한방내과학회지
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    • 제43권2호
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    • pp.320-325
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    • 2022
  • Objective: The purpose of this report is to present the effects of integrative cancer treatment (ICT) on a patient diagnosed with glioblastoma multiforme (GBM). Methods: A 71-year-old male GBM patient received ICT from May 14 to October 12, 2021 and concurrently received temozolomide and radiotherapy. The effect on symptoms was evaluated using a visual analog scale (VAS), and changes in tumor size were assessed using magnetic resonance imaging. Results: After treatment, the VAS score for nausea decreased from 5 to 1, and the tumor size also reduced. Conclusion: ICT could be effective in treating GBM patients by reducing the size of the tumor as well as alleviating the side effects.

Wafer Hybrid Bonding 정밀 정렬을 위한 θz 스테이지 설계 및 제어평가 (θz Stage Design and Control Evaluation for Wafer Hybrid Bonding Precision Alignment)

  • 문제욱;김태호;정용진;이학준
    • 반도체디스플레이기술학회지
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    • 제20권4호
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    • pp.119-124
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    • 2021
  • In a situation where Moore's law, which states that the performance of semiconductor integrated circuits doubles every two years, is showing a limit from a certain point, and it is difficult to increase the performance due to the limitations of exposure technology.In this study, a wafer hybrid method that can increase the degree of integration Various research on bonding technology is currently in progress. In this study, in order to achieve rotational precision between wafers in wafer hybrid bonding technology, modeling of θz alignment stage and VCM actuator modeling used for rotational alignment, magnetic field analysis and desgin, control, and evaluation are performed. The system of this study was controlled by VCM actuator, capactive sensor, and dspace, and the working range was ±7200 arcsec, and the in-position and resoultion were ±0.01 arcsec. The results of this study confirmed that safety and precise control are possible, and it is expected to be applied to the process to increase the integration.

Fabrication and characterization of NbTi-Au-NbTi Josephson junctions

  • Pyeong Kang, Kim;Heechan, Bang;Bongkeon, Kim;Yong-Joo, Doh
    • 한국초전도ㆍ저온공학회논문지
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    • 제24권4호
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    • pp.6-10
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    • 2022
  • We report on the fabrication and measurements of metallic Josephson junctions (JJs) consisting of Au nanoribbon and NbTi superconducting electrodes. The maximum supercurrent density in the junction reaches up to ~ 3×105 A/cm2 at 2.5 K, much larger than that of JJ using single-crystalline Au nanowire. Temperature dependence of the critical current exhibits an exponential decay behavior with increasing temperature, which is consistent with a long and diffusive junction limit. Under the application of a magnetic field, monotonous decrease of the critical current was observed due to a narrow width of the Au nanoribbon. Our observatons suggest that NbTi/Au/NbTi JJ would be a useful platform to develop an integrated superconducing quantum circuit combined with the superconducting coplanar waveguide and ferromagnetic π junctions.

다수의 Photovoltaic Submodule용 컨버터를 통합한 DPP 컨버터 (A Novel DPP Converter Integrating Converters for Multiple Photovoltaic Submodules)

  • 임지훈;이동인;현예지;최재혁;윤한신
    • 전력전자학회논문지
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    • 제27권1호
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    • pp.1-8
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    • 2022
  • Recently, photovoltaic (PV) systems have been gradually applied in eco-friendly vehicle applications to improve fuel economy. The relevant market is expected to continue to grow because the installation of large-capacity PV systems to other eco-friendly vehicles, such as electric buses and trains, is being considered. However, in a PV system, power imbalance between submodules and low power generation efficiency occur due to factors such as cell aging, contamination, and shading. To resolve this problem, various differential power processing (DPP) converters have been researched and developed. However, conventional DPP converters suffer from large volume and low efficiency. Therefore, to apply DPP converters to eco-friendly vehicles, increasing efficiency and reducing volume and price compared with existing DPP converters is necessary. In this paper, a novel DPP converter with an integrated transformer is proposed and analyzed. The proposed DPP converter uses a single magnetic component by integrating transformers and secondary sides of conventional DPP converters. Therefore, the proposed DPP converter shows high power density and high efficiency, and it is suitable for PV systems in eco-friendly vehicle applications.

중·대형 디스플레이용 건식 식각(ICP Dry etcher) 설비의 플라스마 균일도 제어 기술 (Plasma Uniformity Control Technology for Dry Etching (ICP Dry etcher) Equipment for Medium and Large Displays)

  • 홍성재;전홍구;양호식
    • 반도체디스플레이기술학회지
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    • 제21권3호
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    • pp.125-129
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    • 2022
  • The current display technology tends to be highly integrated with high resolution, the element size is gradually downsized, and the structure becomes complicated. Inductively coupled plasma (ICP) dry etcher of various types of etching equipment is a structure that places a large multi-divisional antenna source on the top lid, passes current to the Antenna, and generates plasma using the induced magnetic field generated at this time. However, in the case of a device of a large area size, a support that can withstand a load structurally is necessary, and when these support portions are applied, arrangement of antenna becomes difficult, which causes reduction in uniformity. As described above, the development of antenna source of a large area having a uniform plasma density on the whole surface is difficult to restrict hardware (H/W). As a solution to this problem, we confirmed the change in uniformity of plasma by applying two kinds of specific shape faraday shield(FICP) to the lower part of the large area upper lid antenna of 6 and 8th more than that generation size. In this thesis, we verify the faraday shield effect which can improve plasma uniformity control of ICP dry etcher equipment applied to medium and large displays.

통합 의학 치료로 5년 생존 및 완전 관해에 도달한 췌장암 증례 보고 1례 (Case Report on the Five-year Survival and Complete Response of a Patient with Pancreatic Cancer Treated with Integrative Medicine)

  • 정유진;김지수;박경덕;오유나;정범진;방선휘
    • 대한한방내과학회지
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    • 제44권3호
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    • pp.562-577
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    • 2023
  • Objectives: This is a five-year survival and complete response (CR) report on pancreatic cancer treated with western medicine and Korean traditional medicine. Method: A 59-year-old woman diagnosed with pancreatic cancer visited ○○ Korean traditional medicine hospital after neoadjuvant chemotherapy and pylorus-preserving pancreaticoduodenectomy. She was treated with Korean traditional medicine, including acupuncture, abdominal moxibustion, wild ginseng pharmacopuncture, and herbal medicine, which was based on integrated medicine therapy (IMT), from March 2018 to September 2022. The tumor size was measured by scanning with computed tomography (CT), magnetic resonance imaging, and positron-emission tomography/CT. Adverse events were evaluated using laboratory conclusion and National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0. Result: During four years and three months of treatment, IMT maintained safety. The patient finally reached five-year survival without any recurrence or complication (CR) on October 26, 2022. Conclusion: We suggest that an integrative approach including Korean traditional medicine can be a meaningful treatment option for pancreatic cancer. Further studies should be performed to establish the proper treatment protocol of integrative medicine for pancreatic cancer.

Construction of sports hall flooring with excellent properties by nanocomposites

  • Xianfang Zhang
    • Advances in nano research
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    • 제16권2호
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    • pp.155-164
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    • 2024
  • The rapid evolution of intelligent sports equipment and gadgets has led to the transformation of smartphones into personalized coaching devices. This transformative role is central in today's technologically advanced landscape, addressing the needs of individuals with contemporary lifestyles. The development of intelligent sports gadgets is geared towards elevating overall quality of life by facilitating sports activities, workouts, and promoting health preservation. This categorization yields two primary types of devices: smart sports devices for exercise and smart health control devices, which encompass functionalities such as blood pressure monitoring and muscle volume measurement. Illustrative examples include smart headbands, smart socks, smart wristbands, and smart shoe soles. Significantly, the global market for smart sports devices has garnered substantial popularity among enthusiasts. Moreover, the integration of sensors within these devices has instigated a revolution in group and professional sports, facilitating the calculation of impact intensity and ball speed. The utilization of various types of smart sports equipment has proliferated, encompassing applications in both sports' performance and health monitoring across diverse demographics. This article conducts an assessment of the application of nanotechnology in the continuous modeling of the magnetic electromechanical sensor integrated within smart shoe soles, with a specific emphasis on its implementation in soccer training. The exploration delves into the nuanced intersection of nanotechnology and sports equipment, elucidating the intricate mechanisms that underlie the transformative impact of these advancements.

Neutronics analysis of the ion cyclotron resonance heating antenna of the China Fusion Engineering Test Reactor

  • Gaoxiang Wang;Chengming Qin;Shanliang Zheng;Yongsheng Wang;Kun Xu;Huiqiang Ma
    • Nuclear Engineering and Technology
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    • 제56권8호
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    • pp.3236-3241
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    • 2024
  • Ion cyclotron resonance heating (ICRH) is an important auxiliary heating method applied to the China Fusion Engineering Test Reactor, which can effectively heat the ions and electrons in plasma. Owing to the harsh nuclear environment, neutronic analyses are required to verify tritium self-sufficiency and neutron-shielding requirements. In this study, a neutronics analysis of the ICRH antenna was conducted using the COre and System integrated engine for Reactor Monte Carlo (cosRMC) code to estimate the neutron flux, radiation damage, nuclear heating, gas generation rate of key components, and tritium breeding ratio (TBR), providing data support for the subsequent optimization of the shielding design. In addition, the neutron flux of the coils around the antenna was calculated to prevent the entry of neutrons that damage the magnetic field coils through the gaps between the port plugs and antenna, and the shielding effects of the port-plug antenna on the surrounding components were analyzed. Finally, the results obtained using the cosRMC and MCNP codes were compared, which and presented good agreement, thus verifying the reliability of the neutronic analysis using the cosRMC code.