A5107520467- Non-Invasive Vital Sign Monitoring
- Heart Rate Variability and Autonomic Control
- Biosensors and Analytical Detection
- Spectroscopy Techniques in Biomedical and Chemical Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Erythrocyte Function and Pathophysiology
- Hemodynamic Monitoring and Therapy
- Metabolomics and Mass Spectrometry Studies
- Building Energy and Comfort Optimization
- Blood Pressure and Hypertension Studies
- Color Science and Applications
- Advanced Semiconductor Detectors and Materials
- Impact of Light on Environment and Health
- Semiconductor materials and interfaces
- Semiconductor Quantum Structures and Devices
- Optical Coatings and Gratings
- Advanced Fluorescence Microscopy Techniques
- CCD and CMOS Imaging Sensors
- Phagocytosis and Immune Regulation
- Maritime Navigation and Safety
- Dialysis and Renal Disease Management
- Conducting polymers and applications
- Electrochemical sensors and biosensors
- Digital Holography and Microscopy
- Metabolism and Genetic Disorders
Samsung (South Korea)
2008-2022
University of Cambridge
2010-2013
Korea Basic Science Institute
2010
Sungkyunkwan University
2010
Arizona State University
2008
Pennsylvania State University
2008
Seoul National University of Science and Technology
2008
Seoul National University
2006
Flexible and stretchable optoelectronic devices can be potentially applied in displays, biosensors, biomedicine, robotics, energy generation. The use of nanomaterials with superior optical properties such as quantum dots (QDs) is important the realization wearable displays biomedical devices, but specific structural design well selection materials should preferentially accompany this technology to realize forms these devices. Here, we report sensors manufactured using colloidal QDs...
Using the massive MIMIC physiological database, we tried to validate pulse wave analysis (PWA) based on multiparameters model whether it can continuously estimate blood pressure (BP) values single site of one hand. In addition, consider limitation insufficient data acquirement for home user, used arrival time (PAT) driven BP information determine individual scale factors PWA-BP estimation model. Experimental results indicate that accuracy average regression has error standard deviations mmHg...
Diabetes mellitus is a chronic disease, and its management focuses on monitoring lowering patient's glucose level to prevent further complications. By tracking the glucose-induced shift in surface-enhanced Raman-scattering (SERS) emission of mercaptophenylboronic acid (MPBA), we have demonstrated fast continuous sensing physiologically relevant range from 0.1 30 mM verified underlying mechanism using numerical simulations. Bonding MPBA suppresses "breathing" mode at 1071 cm–1 energizes...
Background. The body metabolism of patients with end-stage renal disease may be altered in response to long-term dialysis treatment. Moreover, the pattern serum metabolites could change depending on type modality used. However, modality-dependent changes are poorly understood. Our aim was profile comprehensively by exploiting a novel method 1H-NMR-based metabonomics and identify differences metabolite patterns subjects receiving haemodialysis (HD) peritoneal (PD).
Label-free optical detection of insulin would allow in vitro assessment pancreatic cell functions their natural state and expedite diabetes-related clinical research treatment; however, no existing method has met these criteria at physiological concentrations. Using spatially uniform 3D gold-nanoparticle sensors, we have demonstrated surface-enhanced Raman sensing the secretions from human islets under low high glucose environments without use labels such as antibodies or aptamers....
We have demonstrated a compact and efficient metasurface-based spectral imager for use in the near-infrared range. The was created by fabricating dielectric multilayer filters directly on top of CMOS image sensor. transmission wavelength each channel selected embedding Si nanopost array appropriate dimensions within multilayers corresponding pixels, this greatly simplified fabrication process avoiding variation multilayer-film thicknesses. meta-spectral shows high efficiency excellent...
Blood pressure was predicted from photoplethysmography (PPG). To obtain PPG, backscattered light a fingertip measured and its waveform analyzed. Systolic upstroke time diastolic in the pulse were used as parameters to predict blood pressure. The experiment carried out with five subjects on different days. systolic had correlation coefficient of -0.605 respect coefficients -0.764 for This PPG method does not require an air-cuff installation arm can continuously. simple LED/photo detector...
It is well-known that gold nanoparticle (AuNP) clusters generate strong surface-enhanced Raman scattering (SERS). In order to produce spatially uniform Raman-enhancing substrates at a large scale, we synthesized vertically perforated three-dimensional (3D) AuNP stacks. The 3D stacks were fabricated by first hydrothermally synthesizing ZnO nanowires perpendicular silicon wafers followed repetitively performing liquid-phase deposition of AuNPs on the tops and side surfaces nanowires. During...
Skylights can introduce considerable heat gains and losses that may offset the benefits of electric light savings cause an increase in yearly net building energy use. The design a toplight system needs to take into consideration different toplighting types, including aperture size orientation, lighting control, and, most important, local climate. This study examines impacts variety strategies glazing types on total loads for prototypical open office space situated five climates. Coordinated...