A5101948266- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Supercapacitor Materials and Fabrication
- Advanced Wireless Network Optimization
- Cooperative Communication and Network Coding
- Advanced MIMO Systems Optimization
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and properties of polymers
- Advanced Data Storage Technologies
- Network Traffic and Congestion Control
- Advanced Cellulose Research Studies
- Photopolymerization techniques and applications
- Metal-Catalyzed Oxygenation Mechanisms
- Advanced Polymer Synthesis and Characterization
- Photosynthetic Processes and Mechanisms
- Molecular Sensors and Ion Detection
- Mobile Ad Hoc Networks
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Battery Materials and Technologies
- Tactile and Sensory Interactions
- Porphyrin and Phthalocyanine Chemistry
- Nanomaterials for catalytic reactions
Korea Advanced Institute of Science and Technology
2019-2025
Korea Institute of Science and Technology
2021-2025
Anyang University
2022
Hanyang University
2022
Seoul National University
2016
Hewlett-Packard (United States)
2003-2013
We consider the challenges of achieving reliable multicast in mobile ad hoc networks (MANETs). MANET environments can experience high packet loss rates because node mobility and wireless signal interference. In addition, they are extremely sensitive to network load due broadcast nature shared medium. Thus, designing a transport protocol, two components essential- reliability congestion control. describe evaluate performance adaptive lightweight (RALM) protocol. show through simulation that...
Wireless network scheduling and control techniques (e.g., opportunistic scheduling) rely heavily on access to Channel State Information (CSI). However, obtaining this information is costly in terms of bandwidth, time, power, could result large overhead. Therefore, a critical question how optimally manage resources the absence such information. To that end, we develop cross-layer solution for downlink cellular systems with imperfect (and possibly no) CSI at transmitter. We use rateless codes...
Four types of flexible polyester are synthesized between urethane polyol polycarbonatediol (PCDL)-isocyanate and carboxylic-terminated pre-polymer. Urethane PCDL-isocyanate is isocyanates such as IPDI H12MDI PCDL which has long alkyl chain. Carboxylic-terminated pre-polymers using 1,4-CHDA, Ph-An, NPG, 1,6-HD, 1,4-CHD. The measured GPC 1H NMR. From the NMR spectra, been introduced to polymer chain resin. Those resins formulated characterized DMA tensile strength, control formability...
In this study, chemiresistive anion sensors are developed using carbon nanotube fibers (CNTFs) functionalized with squaramide-based dual-hydrogen bond donors (SQ1 and SQ2) systematically compared the sensing properties attained by two different functionalization methods. Model structures of selectors synthesized based on a squaramide motif incorporating an electron-withdrawing group. Anion-binding studies SQ1 SQ2 conducted UV-vis titrations to elucidate anion-binding selectors. These...
In this study, the challenge of non-electrochemical activity in carbon nanotube fibers (CNTFs) is addressed by developing a modified chlorosulfonic acid (CSA) densification process specifically developed for directly spun CNTFs. This post-treatment method, well-known enhancing physical properties CNTFs, utilizes double diffusion phenomenon to efficiently integrate diverse range active materials, from conductive polymers like polyaniline (PANI) metal oxides nickel oxide (NiO), into fibers....
Wireless network scheduling and control techniques (e.g., opportunistic scheduling) rely heavily on access to Channel State Information (CSI). However, obtaining this information is costly in terms of bandwidth, time, power, could result large overhead. Therefore, a critical question how optimally manage resources the absence such information. To that end, we develop cross-layer solution for downlink cellular systems with imperfect (and possibly no) CSI at transmitter. We use rateless codes...
Gas monitoring, often as a part of safety and health systems, is widely used in variety sectors such manufacturing, auto- mobiles, medical, households, food beverages, environments, HVACs. Existing gas monitoring approaches the use catalytic infrared sensors electrochemical metal oxide semiconductor technologies, typically require expensive hardware or are power hungry, thus not suitable for long-term large scale deployments. We propose intensity measuring system with cost-effective...
Fiber-shaped supercapacitors (FSSCs) based on next-generation carbon-based fibers are widely studied as the most suitable power supplies for wearable devices; however, achieving high capacitance in weight, volume and length with a single fiber simultaneously, which is necessary to realize practical FSSCs, has rarely been reported. Here, we show that ultra-thick carbon nanotube (UCNTF, 10 tex) linear density can function electrode material FSSCs first time. A series of sonochemical treatments...