사진

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Oh, Joo Hwan (오주환)

Department
Department of Mechanical Engineering(기계공학과)
Website
http://wavlab.unist.ac.kr
Lab
Wave, Acoustics and Vibration Lab. (파동 및 진동 실험실)
Research Keywords
탄성메타물질, 음향양자결정, 탄성파, 진동, Elastic Metamaterials, Phononic Crystals, Elastic Waves, Vibration
Research Interests
Just take a look around, and you’ll immediately find that your life is very closely related to the vibration, acoustic and waves. Conversations in your daily life, noise from outside the window, vibrations in cars and buses, medical or industrial ultrasonic technologies, etc. Vibration, acoustics and waves are everywhere in our daily life. In fact, vibration, acoustics and wave technologies have been considered as a core technique not only in reducing undesired noise in our daily life but also in suppressing vibrations for ultra-high precision mechanical machines and obtaining extremely high resolution in cutting-edge medical devices.WAV Lab is focusing on developing new vibration, acoustics and wave systems that can break-through the current technical limits and open a new way to future mechanical systems. Especially, we are focusing on the research topic of ‘Metamaterial’. Metamaterials are artificial materials consisting of the array of very small microstructure. Owing to the microstructure’s unique configuration, metamaterials can exhibit extraordinary properties that cannot be observed generally. Above all, metamaterials can provide negative density or stiffness, which have been considered to be impossible to be achieved. Below is a photo of elastic metamaterial which actually realized negative density and stiffness. Accordingly, metamaterials exhibit interesting dynamic phenomena that are largely different from general materials, and by utilizing their extraordinary characteristics, metamaterials can be used to design very interesting vibration, acoustics and wave systems.
This table browses all dspace content
Issue DateTitleAuthor(s)TypeViewAltmetrics
2020-06Amplitude-induced bandgap: New type of bandgap for nonlinear elastic metamaterialsBae, Myung Hwan; Oh, Joo HwanARTICLE108 Amplitude-induced bandgap: New type of bandgap for nonlinear elastic metamaterials
2020-06Single-layer elastic metasurface with double negativity for anomalous refractionLee, Sung Won; Oh, Joo HwanARTICLE61 Single-layer elastic metasurface with double negativity for anomalous refraction
2020-05Elastic Wave Energy Entrapment for Reflectionless MetasurfaceKim, Min Soo; Lee, Woorim; Il Park, Chung, et alARTICLE51 Elastic Wave Energy Entrapment for Reflectionless Metasurface
2020-04Valley-dependent topologically protected elastic waves using continuous graphene membranes on patterned substratesHong, Jaehyung; Oh, Joo Hwan; Park, Harold S., et alARTICLE42 Valley-dependent topologically protected elastic waves using continuous graphene membranes on patterned substrates
2020-03Single layer elastic metasurface with double negativity for anomalous refractionLee, Sung Won; Oh, Joo HwanARTICLE83
2019-12Seismic phononic crystals by elastodynamic Navier equationLee, Dongwoo; Oh, Joo Hwan; Kang, In Seok, et alARTICLE114 Seismic phononic crystals by elastodynamic Navier equation
2019-09Study of Abnormal Group Velocities in Flexural MetamaterialsPark, Hong Woo; Oh, Joo HwanARTICLE245 Study of Abnormal Group Velocities in Flexural Metamaterials
2018-09Abnormal Stop Band Behavior Induced by Rotational Resonance in Flexural MetamaterialLee, Sung Won; Oh, Joo HwanARTICLE342 Abnormal Stop Band Behavior Induced by Rotational Resonance in Flexural Metamaterial
2018-08Zero-frequency Bragg gap by spin-harnessed metamaterialOh, Joo Hwan; Choi, Seong Jae; Lee, Jun Kyu, et alARTICLE390 Zero-frequency Bragg gap by spin-harnessed metamaterial
2018-08비선형 초음파 비파괴검사용 메타물질 기반 주파수 필터전근주; 오주환ARTICLE314 비선형 초음파 비파괴검사용 메타물질 기반 주파수 필터
2018-06Transmodal elastic metasurface for broad angle total mode conversionKim, Min Soo; Lee, Woo Rim; Kim, Yoon Young, et alARTICLE442 Transmodal elastic metasurface for broad angle total mode conversion
2017-12Doubly negative isotropic elastic metamaterial for sub-wavelength focusing: Design and realizationOh, Joo Hwan; Seung, Hong Min; Kim, Yoon YoungARTICLE574 Doubly negative isotropic elastic metamaterial for sub-wavelength focusing: Design and realization
2017-11Elastic Metamaterial Insulator for Broadband Low-Frequency Flexural Vibration ShieldingOh, Joo Hwan; Qi, Shuibao; Kim, Yoon Young, et alARTICLE527 Elastic Metamaterial Insulator for Broadband Low-Frequency Flexural Vibration Shielding
2017-05Transmodal Fabry-Pérot Resonance: Theory and Realization with Elastic MetamaterialsKweun, Joshua MInwoo; Lee, Hyung Jin; Oh, Joo Hwan, et alARTICLE558 Transmodal Fabry-Pérot Resonance: Theory and Realization with Elastic Metamaterials
2016-09Quasi-static stop band with flexural metamaterial having zero rotational stiffnessOh, Joo Hwan; Assouar, BadreddineARTICLE778 Quasi-static stop band with flexural metamaterial having zero rotational stiffness
2016-04Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imagingLee, Hyuk; Oh, Joo Hwan; Seung, Hong Min, et alARTICLE750 Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
2016-03Elastic metamaterials for independent realization of negativity in density and stiffnessOh, Joo Hwan; Kwon, Young Eui; Lee, Hyung Jin, et alARTICLE614 Elastic metamaterials for independent realization of negativity in density and stiffness
2016-03Dispersion analysis with 45 degrees-rotated augmented supercells and applications in phononic crystal designAhn, Young Kwan; Oh, Joo Hwan; Ma, Pyung Sik, et alARTICLE601 Dispersion analysis with 45 degrees-rotated augmented supercells and applications in phononic crystal design
2016-02Adjoining of negative stiffness and negative density bands in an elastic metamaterialOh, Joo Hwan; Seung, Hong Min; Kim, Yoon YoungARTICLE567 Adjoining of negative stiffness and negative density bands in an elastic metamaterial
2015-12Maximization of operating frequency ranges of hyperbolic elastic metamaterials by topology optimizationOh, Joo Hwan; Ahn, Young Kwan; Kim, Yoon YoungARTICLE501 Maximization of operating frequency ranges of hyperbolic elastic metamaterials by topology optimization

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