A5100749213- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
- Semiconductor materials and devices
- Advanced Memory and Neural Computing
- ZnO doping and properties
- Nanomaterials and Printing Technologies
- Organic Light-Emitting Diodes Research
- Analytical Chemistry and Sensors
- Teleoperation and Haptic Systems
- Perovskite Materials and Applications
- Tactile and Sensory Interactions
- Gut microbiota and health
- Nanowire Synthesis and Applications
- Neuroscience and Neural Engineering
- Gas Sensing Nanomaterials and Sensors
- Nanofabrication and Lithography Techniques
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- Advanced Surface Polishing Techniques
- Nanoparticles: synthesis and applications
- Probiotics and Fermented Foods
- Biosensors and Analytical Detection
- Robotics and Automated Systems
Ajou University
2021-2025
Samsung (South Korea)
2006-2024
Institute for Basic Science
2016-2024
Korea Advanced Institute of Science and Technology
2016-2024
Korea National University of Transportation
2010-2024
Hanyang University
2022-2024
Seoul National University
2011-2023
Gwangju Institute of Science and Technology
2010-2023
Hongik University
2019-2023
Konkuk University
2022-2023
Owing to the mixed electron/hole and ion transport in aqueous environment, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-based organic electrochemical transistor has been regarded as one of most promising device platforms for bioelectronics. Nonetheless, there exist very few in-depth studies on how intrinsic channel material properties affect their performance long-term stability environments. Herein, we investigated correlation among film microstructural crystallinity/composition,...
Flexible organic optoelectronic devices simultaneously targeting mechanical conformability and fast responsivity in the near-infrared (IR) region are a prerequisite to expand capabilities of practical optical science engineering for on-skin applications. Here, an ultraflexible near-IR responsive skin-conformal photoplethysmogram sensor based on bulk heterojunction photovoltaic active layer containing regioregular polyindacenodithiophene-pyridyl[2,1,3]thiadiazole-cyclopentadithiophene (PIPCP)...
Despite intensive research on photochemical activation of sol–gel metal oxide materials, the relatively long processing time and lack deep understanding underlying chemical courses have limited their broader impact diverse materials applications such as thin‐film electronics, photovoltaics, catalysts. Here, in‐depth studies rapid films using various spectroscopic electrical investigations for physicochemical mechanism are reported. Based exhaustive physical analysis, it is noted that...
In the present study, a novel polar-solvent vapor annealing (PSVA) was used to induce significant structural rearrangement in poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films order improve their electrical conductivity and work function. The effects of on PEDOT:PSS were systematically compared with those conventional solvent additive method (SAM) investigated detail by analyzing changes conductivity, morphology, top bottom surface composition, conformational PEDOT...
ABSTRACT Silver nanoparticles (AgNPs) are considered to be a potentially useful tool for controlling various pathogens. However, there concerns about the release of AgNPs into environmental media, as they may generate adverse human health and ecological effects. In this study, we developed evaluated novel micrometer-sized magnetic hybrid colloid (MHC) decorated with variously sized (AgNP-MHCs). After being applied disinfection, these particles can easily recovered from media using their...
Ultrathin and dense metal oxide gate di-electric layers are reported by a simple printing of AlOx HfOx sol-gel precursors. Large-area printed indium gallium zinc (IGZO) thin-film transistor arrays, which exhibit mobilities >5 cm(2) V(-1) s(-1) leakage current 10(-9) A cm(-2) at very low operation voltage 2 V, demonstrated continuous bar-coated processes.
Flexible photovoltaics with extreme mechanical compliance present appealing possibilities to power Internet of Things (IoT) sensors and wearable electronic devices. Although improvement in thermal stability is essential, simultaneous achievement high conversion efficiency (PCE) flexible organic (OPVs) remains challenging due the difficulties maintaining an optimal microstructure active layer under stress. The insufficient capability a plastic substrate environmental influences cannot be...
Abstract Dark current density ( J dark ) is the most important factors determining signal‐to‐noise ratio, linear dynamic range and detectivity D * of organic photodetectors (OPDs). However, solution‐processed OPDs generally suffer from high under bias because origin still remains unclear related to complicate factors. In this work, effect fluorinated alkyl side chain (FAC) conjugated polymers (CPs) on OPD performance systematically investigated according number fluorine atom. The OPDs,...
The electrical properties of ferrocene‐alkanethiolate self‐assembled monolayers (SAMs) on a high yield solid‐state device structure are investigated. devices fabricated using conductive polymer interlayer between the top electrode and SAM both silicon‐based rigid substrates plastic‐based flexible substrates. Asymmetric transport characteristics that originate from ferrocene moieties observed. In particular, distinctive temperature dependence current (i.e., decrease in density as increases)...
Significance When various electronic appliances used in everyday life become deformable and transparent, they will provide tremendous versatility the design use of see-through, smart mobile applications, exceeding limitations best developed conventional silicon technologies, which are available only rigid, opaque forms. However, even recently discovered innovative semiconducting components have failed to simultaneously achieve such flexibility transparency. Thus, existing options still...
Abstract Mechanically durable transparent electrodes are needed in flexible optoelectronic devices to realize their long‐term stable functioning, for applications various fields such as energy, healthcare, and soft robotics. Several promising based on nanomaterials have been previously reported replace the conventional fragile indium‐tin oxide (ITO); however, obtaining feasible printed ultraflexible with a multistack structure is still great challenge. Here, ultrathin (uniform thickness of...
<italic>L. acidophilus</italic>treatment can modulate immune responses, control the micro-RNA levels and restore gut microbiota of mice with DSS-induced colitis. Therefore,<italic>L. could be useful to inflammatory bowel diseases.
Abstract Ultralightweight and flexible power sources are essential for driving textile or wearable electronic devices soft robots because they do not induce discomfort limit movement when attached to human skin, textiles, actuators. Organic solar cells (OSCs) good candidates developing such have the advantages of being lightweight flexible. However, achieving operational stability ultrathin shape simultaneously remains difficult substrate cannot prevent penetration ultraviolet (UV) light,...
The rapid advances in human-friendly and wearable photoplethysmography (PPG) sensors have facilitated the continuous real-time monitoring of physiological conditions, enabling self-health care without being restricted by location. In this paper, we focus on state-of-the-art skin-compatible PPG strategies to obtain accurate stable sensing biological signals adhered human skin along with light-absorbing semiconducting materials that are classified as silicone, inorganic, organic absorbers....