Yon-kyu Park - Academia.edu (original) (raw)
Papers by Yon-kyu Park
We present a new concept of force realization, flux quantum-based mechanism in the sub-pico-Newto... more We present a new concept of force realization, flux quantum-based mechanism in the sub-pico-Newton range. By controlling the number of flux quantum in a superconducting ring, a force can be generated as an integer multiple of a constant force step. For a 50 nm-thick Nb annulus with the inner and outer radii of 5 μm and 10 μm, respectively, and
We describe the dynamic evaluation of two multi-component force-moment transducers having column-... more We describe the dynamic evaluation of two multi-component force-moment transducers having column- type sensing element. Among them, one has a solid cylindrical sensing element and the other has a hollow cylindrical shape. They were calibrated statically with a force-moment calibration machine in the Physikalisch- Technische Bundesanstalt (PTB), Germany. We evaluated the dynamic characteristics of the force-moment transducers by using a
This paper describes the dynamic characteristics of column type 6-component force-moment sensors ... more This paper describes the dynamic characteristics of column type 6-component force-moment sensors with force components Fx, Fy, Fz and moment components Mx, My, Mz. We have evaluated the dynamic characteristics of the force-moment sensors by using a shaker system and a multi-channel dynamic analyzer system. It reveals that the sensitivity decreases as the frequency increases except for the Fz component
압력과 온도측정 기능을 갖는 고성능 플렉시블 촉각센서
Journal of the Korean Society for Precision Engineering, 2014
DESIGN AND MANUFACTURING OF A HIGH CAPACITY DEADWEIGHT FORCE STANDARD MACHINE
International Journal of Modern Physics: Conference Series, 2013
Design of Flexible Tactile Sensor Based on Three-Component Force and Its Fabrication
Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 2005
Abstract - This paper describes a design of a tactile sensor, which can measure three components ... more Abstract - This paper describes a design of a tactile sensor, which can measure three components forces. The bio-mimetic tactile sensor, alternative to human's finger, is composed of 100 micro force sensors, and its size being 10 mm x 10 mm. Each micro force sensor has a square ...
SI-traceable determination of spring constants of various atomic force microscope cantilevers with a small uncertainty of 1%
Measurement Science and Technology, 2007
We have demonstrated the feasibility of using the nano force calibrator (NFC), consisting of a mi... more We have demonstrated the feasibility of using the nano force calibrator (NFC), consisting of a microbalance and a nano-stage, as a calibration device, which can accurately determine normal spring constants (k) of various atomic force microscope (AFM) cantilevers with traceability to the Système International d'Unités (SI units). From very compliant (k < 0.1 N m-1) to stiff (k > 10
Design of Flexible Hybrid Tactile Display Using Electro-Vibration and Electroactive Polymer Modules
Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation, 2013
ABSTRACT When a user explores over an object, mechanoreceptors in human’s fingertip dominantly de... more ABSTRACT When a user explores over an object, mechanoreceptors in human’s fingertip dominantly detect small-scale shapes and textures on the surface of the object. For generating and conveying virtual tactile sensations to users, we developed a new flexible hybrid tactile display consisting of an electroactive polymer (EAP) module and an electro-vibration module. The EAP module was used to construct an ultra-thin 3×3 pin-array module for mimicking small-scale shapes on the object. Since each cell of the proposed 3×3 EAP module is independently actuated with high vertical stroke, it is enough to create various micro-shapes. The electro-vibration module was attached on the EAP module. The electro-vibration module consists of two plates coated with compliant electrodes. The electro-vibration module creates micro-vibration to imitate virtual texture on the objects. To design the proposed hybrid tactile display, the equations for the mechanical models of the proposed tactile display were derived. The working principle of the modules was verified based on the mechanical model. To control the developed combined tactile display, a high-volt multichannel controller was developed by using a high-volt DC-DC converter and opto-couplers. The proposed hybrid tactile display with its control system generates sufficient performances to create realistic and vivid virtual tactile sensations.
Calibration of the spring constants of various AFM cantilevers with the small uncertainty level of 2%
2006 SICE-ICASE International Joint Conference, 2006
Calibration of the spring constants of atomic force microscopy (AFM) cantilevers is one of the is... more Calibration of the spring constants of atomic force microscopy (AFM) cantilevers is one of the issues in biomechanics and nanomechanics for quantified force metrology at pico- or nano Newton level. In this paper, we present an AFM cantilever calibration system: the Nano Force Calibrator (NFC), which consists of a precision balance and a one-dimensional stage. Three types of AFM cantilevers
원기둥을 이용한 6축 힘/모멘트 센서의 설계 및 제작
Transactions of the Korean Society of Mechanical Engineers A, 2002
Millimeter-Scale Piezoresistive Cantilevers for Accurate Force Measurements at the Nano-Newton Level
MAPAN, 2013
Dynamic investigation of a binocular six-component force-moment sensor
Measurement Science & Technology, 2002
This paper describes the dynamic characteristics of a binocular six-component force-moment sensor... more This paper describes the dynamic characteristics of a binocular six-component force-moment sensor with force components Fx, Fy and Fz, each having 200 N capacity, and moment components Mx, My and Mz, each having 20 N m capacity. We have evaluated the dynamic characteristics of the force-moment sensor by using a shaker system and a multichannel dynamic analyser system. It reveals
Robot fingertip tactile sensing module with a 3D-curved shape using molding technique
A silicon-based flexible tactile sensor for ubiquitous robot companion applications
Journal of Physics: Conference Series, 2006
We present the fabrication process and characteristics of a 3-axes flexible tactile sensor availa... more We present the fabrication process and characteristics of a 3-axes flexible tactile sensor available for normal and shear mode fabricated using Si micromachining and packaging technologies. The fabrication processes for the 3 axes flexible tactile sensor were classified in the fabrication of sensor chips and their packaging on the flexible PCB. The variation rate of resistance was about 2.1%/N and
Oscillating signal components of a dead-weight force-standard machine and reduction techniques
Measurement Science & Technology, 1999
This paper describes the dynamic behaviour of a dead-weight force-standard machine at the Korea R... more This paper describes the dynamic behaviour of a dead-weight force-standard machine at the Korea Research Institute of Standards and Science (KRISS). When a build-up system is set into a dead-weight machine, the signals from the force transducers in the build-up system consist of a dc component and oscillating signal components. The dominant oscillating components are due to pendulum motions of
The development of a blood pressure simulator in KRISS
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008
Blood pressure is defined as the amount of force at unit area which the blood exerts on a wall of... more Blood pressure is defined as the amount of force at unit area which the blood exerts on a wall of a blood vessel. The BP has a clinical importance as the basic index in the medical examination of patients. Especially, the percentage of the hypertensive is more than 15% in an adult population of Korea and hypertension is notorious as 'a silent killer' because it has no prior symptoms. The most important thing in the diagnosis, treatment and prognosis of hypertension is the accurate measurement of the BP. In this study, we developed the blood pressure simulator for the monitoring of oscillometric BP devices and compared this KRISS simulator with commercial simulators. Finally, we tested the commercial oscillometric BP devices (6 models from 5 manufacturers) using the KRISS simulator. The KRISS simulator has the repeatability error below 0.1% for the pressure generation and we expected to develop the BP simulator for Korean by the collection of clinical data from Koreans.
PIEZORESISTIVE PROPERTIES OF MULTI-WALLED CARBON NANOTUBE–POLY(DIMETHYLSILOXANE) COMPOSITES FOR LOW-PRESSURE-SENSING APPLICATIONS
Nano, 2012
We report the status and progress of Korea Research Institute of Standards and Science (KRISS) in... more We report the status and progress of Korea Research Institute of Standards and Science (KRISS) in pico-newton standard force realization. To produce and measure discrete magnetic force on a superconducting ring in proportion to the number of flux-quantum, an instrument and facilities are being developed to provide multi- conditions such as low temperature, high field-gradient, high vacuum, vibration isolation, and
Journal of Mechanical Science and Technology, 2006
A deadweight force standard machine is a mechanical structure that generates force by subjecting ... more A deadweight force standard machine is a mechanical structure that generates force by subjecting deadweights to the local gravitational field. The Korea Research Institute of Standards and Science (KRISS) developed and installed a 100 kN deadweight force standard machine for national force standards. It can generate forces from 2 kN to 110 kN in increments of 1 kN. The uncertainty
We propose mechanical force realization based on flux quantization in the pico-Newton range. By c... more We propose mechanical force realization based on flux quantization in the pico-Newton range. By controlling the number of flux quantum in a superconducting annulus, a force can be created as integer multiples of a constant step. For a 50 nm-thick Nb annulus with the inner and outer radii of 5 mu\mumum and 10 mu\mumum, respectively, and the field gradient of
We present a new concept of force realization, flux quantum-based mechanism in the sub-pico-Newto... more We present a new concept of force realization, flux quantum-based mechanism in the sub-pico-Newton range. By controlling the number of flux quantum in a superconducting ring, a force can be generated as an integer multiple of a constant force step. For a 50 nm-thick Nb annulus with the inner and outer radii of 5 μm and 10 μm, respectively, and
We describe the dynamic evaluation of two multi-component force-moment transducers having column-... more We describe the dynamic evaluation of two multi-component force-moment transducers having column- type sensing element. Among them, one has a solid cylindrical sensing element and the other has a hollow cylindrical shape. They were calibrated statically with a force-moment calibration machine in the Physikalisch- Technische Bundesanstalt (PTB), Germany. We evaluated the dynamic characteristics of the force-moment transducers by using a
This paper describes the dynamic characteristics of column type 6-component force-moment sensors ... more This paper describes the dynamic characteristics of column type 6-component force-moment sensors with force components Fx, Fy, Fz and moment components Mx, My, Mz. We have evaluated the dynamic characteristics of the force-moment sensors by using a shaker system and a multi-channel dynamic analyzer system. It reveals that the sensitivity decreases as the frequency increases except for the Fz component
압력과 온도측정 기능을 갖는 고성능 플렉시블 촉각센서
Journal of the Korean Society for Precision Engineering, 2014
DESIGN AND MANUFACTURING OF A HIGH CAPACITY DEADWEIGHT FORCE STANDARD MACHINE
International Journal of Modern Physics: Conference Series, 2013
Design of Flexible Tactile Sensor Based on Three-Component Force and Its Fabrication
Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 2005
Abstract - This paper describes a design of a tactile sensor, which can measure three components ... more Abstract - This paper describes a design of a tactile sensor, which can measure three components forces. The bio-mimetic tactile sensor, alternative to human's finger, is composed of 100 micro force sensors, and its size being 10 mm x 10 mm. Each micro force sensor has a square ...
SI-traceable determination of spring constants of various atomic force microscope cantilevers with a small uncertainty of 1%
Measurement Science and Technology, 2007
We have demonstrated the feasibility of using the nano force calibrator (NFC), consisting of a mi... more We have demonstrated the feasibility of using the nano force calibrator (NFC), consisting of a microbalance and a nano-stage, as a calibration device, which can accurately determine normal spring constants (k) of various atomic force microscope (AFM) cantilevers with traceability to the Système International d'Unités (SI units). From very compliant (k < 0.1 N m-1) to stiff (k > 10
Design of Flexible Hybrid Tactile Display Using Electro-Vibration and Electroactive Polymer Modules
Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation, 2013
ABSTRACT When a user explores over an object, mechanoreceptors in human’s fingertip dominantly de... more ABSTRACT When a user explores over an object, mechanoreceptors in human’s fingertip dominantly detect small-scale shapes and textures on the surface of the object. For generating and conveying virtual tactile sensations to users, we developed a new flexible hybrid tactile display consisting of an electroactive polymer (EAP) module and an electro-vibration module. The EAP module was used to construct an ultra-thin 3×3 pin-array module for mimicking small-scale shapes on the object. Since each cell of the proposed 3×3 EAP module is independently actuated with high vertical stroke, it is enough to create various micro-shapes. The electro-vibration module was attached on the EAP module. The electro-vibration module consists of two plates coated with compliant electrodes. The electro-vibration module creates micro-vibration to imitate virtual texture on the objects. To design the proposed hybrid tactile display, the equations for the mechanical models of the proposed tactile display were derived. The working principle of the modules was verified based on the mechanical model. To control the developed combined tactile display, a high-volt multichannel controller was developed by using a high-volt DC-DC converter and opto-couplers. The proposed hybrid tactile display with its control system generates sufficient performances to create realistic and vivid virtual tactile sensations.
Calibration of the spring constants of various AFM cantilevers with the small uncertainty level of 2%
2006 SICE-ICASE International Joint Conference, 2006
Calibration of the spring constants of atomic force microscopy (AFM) cantilevers is one of the is... more Calibration of the spring constants of atomic force microscopy (AFM) cantilevers is one of the issues in biomechanics and nanomechanics for quantified force metrology at pico- or nano Newton level. In this paper, we present an AFM cantilever calibration system: the Nano Force Calibrator (NFC), which consists of a precision balance and a one-dimensional stage. Three types of AFM cantilevers
원기둥을 이용한 6축 힘/모멘트 센서의 설계 및 제작
Transactions of the Korean Society of Mechanical Engineers A, 2002
Millimeter-Scale Piezoresistive Cantilevers for Accurate Force Measurements at the Nano-Newton Level
MAPAN, 2013
Dynamic investigation of a binocular six-component force-moment sensor
Measurement Science & Technology, 2002
This paper describes the dynamic characteristics of a binocular six-component force-moment sensor... more This paper describes the dynamic characteristics of a binocular six-component force-moment sensor with force components Fx, Fy and Fz, each having 200 N capacity, and moment components Mx, My and Mz, each having 20 N m capacity. We have evaluated the dynamic characteristics of the force-moment sensor by using a shaker system and a multichannel dynamic analyser system. It reveals
Robot fingertip tactile sensing module with a 3D-curved shape using molding technique
A silicon-based flexible tactile sensor for ubiquitous robot companion applications
Journal of Physics: Conference Series, 2006
We present the fabrication process and characteristics of a 3-axes flexible tactile sensor availa... more We present the fabrication process and characteristics of a 3-axes flexible tactile sensor available for normal and shear mode fabricated using Si micromachining and packaging technologies. The fabrication processes for the 3 axes flexible tactile sensor were classified in the fabrication of sensor chips and their packaging on the flexible PCB. The variation rate of resistance was about 2.1%/N and
Oscillating signal components of a dead-weight force-standard machine and reduction techniques
Measurement Science & Technology, 1999
This paper describes the dynamic behaviour of a dead-weight force-standard machine at the Korea R... more This paper describes the dynamic behaviour of a dead-weight force-standard machine at the Korea Research Institute of Standards and Science (KRISS). When a build-up system is set into a dead-weight machine, the signals from the force transducers in the build-up system consist of a dc component and oscillating signal components. The dominant oscillating components are due to pendulum motions of
The development of a blood pressure simulator in KRISS
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008
Blood pressure is defined as the amount of force at unit area which the blood exerts on a wall of... more Blood pressure is defined as the amount of force at unit area which the blood exerts on a wall of a blood vessel. The BP has a clinical importance as the basic index in the medical examination of patients. Especially, the percentage of the hypertensive is more than 15% in an adult population of Korea and hypertension is notorious as 'a silent killer' because it has no prior symptoms. The most important thing in the diagnosis, treatment and prognosis of hypertension is the accurate measurement of the BP. In this study, we developed the blood pressure simulator for the monitoring of oscillometric BP devices and compared this KRISS simulator with commercial simulators. Finally, we tested the commercial oscillometric BP devices (6 models from 5 manufacturers) using the KRISS simulator. The KRISS simulator has the repeatability error below 0.1% for the pressure generation and we expected to develop the BP simulator for Korean by the collection of clinical data from Koreans.
PIEZORESISTIVE PROPERTIES OF MULTI-WALLED CARBON NANOTUBE–POLY(DIMETHYLSILOXANE) COMPOSITES FOR LOW-PRESSURE-SENSING APPLICATIONS
Nano, 2012
We report the status and progress of Korea Research Institute of Standards and Science (KRISS) in... more We report the status and progress of Korea Research Institute of Standards and Science (KRISS) in pico-newton standard force realization. To produce and measure discrete magnetic force on a superconducting ring in proportion to the number of flux-quantum, an instrument and facilities are being developed to provide multi- conditions such as low temperature, high field-gradient, high vacuum, vibration isolation, and
Journal of Mechanical Science and Technology, 2006
A deadweight force standard machine is a mechanical structure that generates force by subjecting ... more A deadweight force standard machine is a mechanical structure that generates force by subjecting deadweights to the local gravitational field. The Korea Research Institute of Standards and Science (KRISS) developed and installed a 100 kN deadweight force standard machine for national force standards. It can generate forces from 2 kN to 110 kN in increments of 1 kN. The uncertainty
We propose mechanical force realization based on flux quantization in the pico-Newton range. By c... more We propose mechanical force realization based on flux quantization in the pico-Newton range. By controlling the number of flux quantum in a superconducting annulus, a force can be created as integer multiples of a constant step. For a 50 nm-thick Nb annulus with the inner and outer radii of 5 mu\mumum and 10 mu\mumum, respectively, and the field gradient of