A5031251407- Advanced Sensor and Energy Harvesting Materials
- Radio Frequency Integrated Circuit Design
- Advancements in PLL and VCO Technologies
- Additive Manufacturing and 3D Printing Technologies
- Advanced Thermoelectric Materials and Devices
- Air Quality and Health Impacts
- Semiconductor materials and devices
- Analog and Mixed-Signal Circuit Design
- Nanoparticles: synthesis and applications
- VLSI and Analog Circuit Testing
- Thermal Radiation and Cooling Technologies
- Advanced X-ray and CT Imaging
- Nanofabrication and Lithography Techniques
- Periodontal Regeneration and Treatments
- Bone and Dental Protein Studies
- Advanced Text Analysis Techniques
- Inhalation and Respiratory Drug Delivery
- Salivary Gland Tumors Diagnosis and Treatment
- Nanomaterials and Printing Technologies
- Salivary Gland Disorders and Functions
- Tactile and Sensory Interactions
- Kidney Stones and Urolithiasis Treatments
- Sentiment Analysis and Opinion Mining
- Semiconductor Lasers and Optical Devices
- Conducting polymers and applications
Seoul National University
2021-2025
Semiconductor Research Corporation
2025
Seoul National University Bundang Hospital
2022-2024
Scripps Korea Antibody Institute
2024
Hyundai Motors (South Korea)
2024
Korea University
2019-2022
New Generation University College
2022
Samsung (South Korea)
2019-2021
Yonsei University
2018-2019
Korea Advanced Institute of Science and Technology
2017-2018
Early study tries to use chatbot for counseling services. They changed drinking habit of who being consulted by leading them via intervene chatbot. However, the application did not concerned about psychiatric status through continuous conversation with user monitoring. Furthermore, they had no ethical judgment method that intervention We argue more reasonable and emotion recognition will make better mental healthcare experiment. It be proper clinical consolation in view as well. This paper...
Abstract With the increasing demand for Internet of Things (IoT) with integrated wireless sensor networks (WSNs), sustainable power supply and management have become important issues to be addressed. Thermal energy in forms waste heat or metabolic is a promising source reliably supplying electronic devices; instance, thermoelectric generators are widely being researched as they able convert thermal into electricity. This paper specifically looks over application thermoelectricity IoT...
Stretchable hybrid electronics (SHE) that combine high-performance rigid electronic devices with stretchable interconnects offer a facile route for accessing and processing bio-signals human interactions. Incorporated sensors wireless communications, SHE achieves novel applications such as biomedical diagnosis, skin prosthetics, robotic skin. The implementation of reliable requires the comprehensive development electrodes, bonding techniques, strain-engineered integration schemes. This...
This paper reports body heat harvesting and refrigeration effects based on a flexible thermoelectric (TE) system made of rigid inorganic bulk materials. The TE device itself is integrated with small segments that consist Bakelite holders containing the elements. These are connected by wires passing through holes at each side holders. Owing to its structural design, wearable shows enough flexibility be used curved or nonflat surfaces such as human skin. Powered portable battery, it performs...
The main mechanism of toxicity for fast-dissolving nanoparticles (NPs) is relatively simple as it originates from the intrinsic their constituent elements rather than complicated surface reactivity. However, there little information about compared NP and its ion, which essential understanding nanoparticle development a structure-toxicity relationship model. Herein, we selected three types metal-oxide NPs (CoO, CuO, ZnO) metal chlorides (CoCl2, CuCl2, ZnCl2) to compare dose-response curves...
Abstract Background Bioceramic β-tricalcium phosphate (β-TCP) is used as a bone-grafting material and therapeutic drug carrier for treatment of bone defects in the oral maxillofacial regions due to osteoconductivity biocompatibility. However, low mechanical strength limited osteoinductivity β-TCP agglomerate restrict regenerating performance clinical settings. Methods Herein, biomimetic composite proposed morphogenetic protein-2 (BMP-2)-delivering graft substitute achieve robust grafting...
<div class="section abstract"><div class="htmlview paragraph">Recently, regulations on automobile emission have been significantly strengthened to address climate change. The industry is responding these by developing electric vehicles that use batteries and fuel-cells. Automobile emissions are environmentally harmful, especially in the case of equipped with high-temperature high-pressure diesel engines using compression-ignition, proportion nitrogen oxides...
Solution-processed thin-film transistors (TFTs) based on single-walled carbon nanotubes (SWCNTs) hold great potential for next-generation electronics owing to their remarkable electrical, mechanical, and optical characteristics. However, challenges in efficiently dispersing SWCNTs hinder scalable fabrication. Conventional methods using surfactants improve SWCNT dispersion but lead degradation of device performance due increased contact resistance between the SWCNTs. Furthermore, surfactant...
Instillation of highly soluble nanoparticles (NPs) into the lungs rodents can cause acute eosinophilia without any previous sensitizations by role dissolved ions. However, whether gradually dissolving NPs same type remains to be elucidated. We selected nickel oxide (NiO) as a NP and evaluated time course pulmonary inflammation pattern well its mechanisms. NiO were intratracheally instilled female Wistar rats at various concentrations (50, 100, 200 cm2/rat) lung was time-points (1, 2, 3, 4...
Electronic skin (E-skin) based on tactile sensors has great significance in next-generation electronics such as biomedical application and artificial intelligence that requires interaction with humans. To mimic the properties of human skin, high flexibility, excellent sensing capability, sufficient spatial resolution through high-level sensor integration are required. Here, we report a highly sensitive pressure matrix piezoresistive cellulose/single-walled carbon nanotube-entangled fiber...
Due to the exponential increase in development and utilization of rare earth oxide nanoparticles (REO NPs) various fields, possibility exposure humans by inhalation has increased. However, there are little information about hazards REO NPs its mechanisms toxicity. In this study, we evaluated acute pulmonary inflammation using 10 (Dy2O3, Er2O3, Eu2O3, Gd2O3 La2O3, Nd2O3, Pr6O11, Sm2O3, Tb4O7, Y2O3) four well-known toxic particles (CuO, NiO, ZnO, DQ12). Minimum three doses per NP were...
Due to the received signal strength (RSS) variation, WiFi indoor positioning techniques using RSS have difficulties provide good location estimates. To mitigate effect of this paper presents a Kalman filter-based algorithm that is combined with pedestrian dead reckoning and RSS-based fingerprinting positioning. The recovery clustering methods are also introduced enhance accuracy Unlike other existing algorithms, proposed estimates biases accumulated in measurements based on recursive least...
Energy efficiency in mobile devices is a pivotal criteria from the overall system point of view, Although 7,5Gb/s 8Gb LPDDR5 [1], with low-power schemes (internal data copy, dynamic-voltage-frequency scaling (DVFS), and deep-sleep mode (DSM)), achieves improved energy compared to previous LPDDR4X [2], market demands for higher density speed gradually increase high-end applications including hand-held artificial intelligence (AI) advanced driver assistance (ADAS), To achieve power-efficient...
High-speed and low-power techniques for the latest mobile DRAMs, such as LPDDR4/4X [1–3], have been developed to enable high-resolution displays, multiple cameras 4G communication in devices. However, DRAM with higher bandwidth lower power consumption than LPDDR4X is indispensable support 5G communication, on-device artificial intelligence advanced driver assistance systems. In this paper, we present a 1 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The demand for mobile DRAM has increased, with a requirement high density, data rates, and low-power consumption to support applications such as 5G communication, multiple cameras, automotive. Thus, density increased from 2Gb [1] 16Gb [2] in LPDDR4 LPDDR4X, but the maximum LPDDR5 is only 12Gb [3] due limited package size specification: 496-ball FBGA. In this work, mosaic architecture introduced increase 16Gb, even size. Additionally, I/O performance improved by shortening length top metal,...
Although surface area metric was suggested as an appropriate dose for acute lung inflammation of NPs, it might not be effective fast-dissolving NPs because they lose their reactive when dissolved in the phagolysosomes. Herein, we evaluated using a rat intratracheal instillation model. A panel (CoO, CuO and ZnO) constituent metal ions (CoCl2, CuCl2 ZnCl2) were compiled each compound intratracheally instilled into lungs female Wistar rats at same molar concentrations NP doses (40, 100 400...
Field‐effect transistor (FET)‐type pressure sensor offers excellent amplification and signal conversion functionality as a switching device, it has the capability to integrate tactile sensors by constructing active‐matrix arrays with low crosstalk. However, conventional FET‐type either have complex device layout additional components, such pressure‐sensitive elastomer, attached source/drain electrodes, or method of modulating gate dielectric can lead breakdown failure. Additionally,...
Pharmacognosy Research,2024,16,3,616-625.DOI:10.5530/pres.16.3.73Published:June 2024Type:Original ArticleAuthors:Do-Hyung Kim, Jin Won Park, Dong-Keon Lee, Hyeong-Jun Hye Kwak, Daegeun Yongkwan Ho Jae-Hwan Nam, Wang-Kwon and Sang-In Park Author(s) affiliations:Do-Hyung Kim1,2,#, Park3,#, Lee3, Park2, Kwak2, Kim1, Park4, Nam2, Kim5, Park1,4,* 1Department of R&D, SML Biopharm Co., Ltd., Gwangmyeong, REPUBLIC OF KOREA. 2Department Medical Biological Sciences, The Catholic University Korea,...
Abstract Background We evaluated the improvement of pain and increase in mouth opening after temporomandibular joint arthrocentesis possible association with various factors such as previous splint treatment, medication, diagnosis. Results studied 57 disorder patients who underwent at Korea University Anam Hospital. These (24 males 33 females, aged between 15 76 years) that was performed by one surgeon. The degree (assessed using maximum opening: MMO) visual analog scale: VAS) were assessed...
A 7.5 Gb/s/pin 8-Gb LPDDR5 SDRAM is implemented in a 1× nm DRAM process. Various techniques are applied to achieve higher bandwidth and lower power than LPDDR4X. To increase data rate, WCK clocking scheme that less vulnerable noise adopted non-target ODT mode proposed reduce reflection two-rank system. couple of for saving power. self-refresh power, this chip supports deep sleep (DSM). In DSM, the leakage current internal voltages decreases by disabling voltage generators not related with...