A5015237054- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Neural dynamics and brain function
- Lipid Membrane Structure and Behavior
- Functional Brain Connectivity Studies
- Spectroscopy and Quantum Chemical Studies
- Ga2O3 and related materials
- Photoacoustic and Ultrasonic Imaging
- Psychedelics and Drug Studies
- 2D Materials and Applications
- Electrochemical Analysis and Applications
- Surfactants and Colloidal Systems
- MXene and MAX Phase Materials
- Neurotransmitter Receptor Influence on Behavior
- Advanced ceramic materials synthesis
- Biochemical Acid Research Studies
- Advanced battery technologies research
- Advanced Sensor and Energy Harvesting Materials
- Pickering emulsions and particle stabilization
- Polymer Surface Interaction Studies
- Advanced Fluorescence Microscopy Techniques
- Nanopore and Nanochannel Transport Studies
- Nanomaterials and Printing Technologies
- Photonic Crystals and Applications
- Advanced MRI Techniques and Applications
University of Michigan
2024
Incheon National University
2024
Korea Advanced Institute of Science and Technology
2016-2023
Korea Institute of Brain Science
2023
Korea Polytechnic University
2019
Daegu Gyeongbuk Institute of Science and Technology
2019
Sungkyunkwan University
2011
Korea Institute of Ceramic Engineering and Technology
2009
Consciousness requires a dynamic balance of integration and segregation in brain networks. We report an fMRI-based metric, the integration-segregation difference (ISD), which captures two key network properties: efficiency (integration) clustering (segregation). With this we quantify state transitions from conscious wakefulness to unresponsiveness induced by anesthetic propofol. The observed changes ISD suggest profound shift towards networks during anesthesia. A common unimodal-transmodal...
More than 30 human degenerative diseases result from protein aggregation such as Alzheimer's disease (AD) and type 2 diabetes mellitus (T2DM). Islet amyloid deposits, a hallmark in T2DM, are found pancreatic islets of more 90% T2DM patients. An association between amylin reduction β-cell mass was also established by post-mortem studies. A strategy preventing aggregation-related disorders is to inhibit the associated toxicity. In this study, we demonstrated that two inhibitors, lipoic acid...
Haptic sensors based on piezoelectric sensor arrays with pin-type modules which have high responses and dynamic sensing capabilities are designed studied for surface topography measurements. Unlike the human finger, most flexible tactile designs do not detect depth information of surfaces well, change at mm level despite fact that they a good sensitivity pressure or force. To enhance ability to objects, combining module excellent monitoring in direction by spring is developed this paper....
Abstract We present a new strategy to dramatically enhance the stability of freestanding lipid bilayers. found that an addition water in oil emulsion stabilizer, SPAN 80 solvent phase guarantees nearly millimeter-scale stable The permeability, bilayer area, contact angle, and interfacial tension were measured as function time 80-to-lipid weight ratio (Φ ) with several different solvents. Surprisingly, 80, instead remaining bilayer, was moved out during formation. Also we studied effect on...
Consciousness requires a dynamic balance of integration and segregation in functional brain networks. An optimal integration-segregation depends on two key aspects connectivity: global efficiency (i.e., integration) clustering segregation). We developed new fMRI-based measure, termed the difference (ISD), which captures both aspects. used this metric to quantify changes state from conscious wakefulness loss responsiveness induced by anesthetic propofol. The observed ISD suggest profound...
A handheld confocal microscope using a rapid MEMS scanning mirror facilitates real-time optical biopsy for simple cancer diagnosis. Here we report catheter high definition and frame rate (HDHF) Lissajous mirror. The broad resonant frequency region of the fast axis on with low Q-factor flexible selection frequencies. HDHF was achieved by selecting frequencies greatest common divisor (GCD) total lobe number. fully packaged into configuration, which coupled to home-built imaging system. allows...
Accurate and generalizable classification of brain states is essential for understanding their neural underpinnings improving clinical diagnostics. Traditionally, functional connectivity patterns graph-theoretic metrics have been utilized. However, cortical gradient features, which reflect global organization, offer a complementary approach. We hypothesized that machine learning model integrating these three feature sets would effectively discriminate between baseline atypical across wide...
The neural basis of conscious perception remains incompletely understood. While cortical mechanisms content have been extensively investigated, the role subcortical structures, including thalamus, less explored. We aim to elucidate causal contributions different thalamic regions using transcranial low-intensity focused ultrasound (LIFU) neuromodulation. hypothesize that modulating would result in distinct perceptual outcomes. apply LIFU human volunteers investigate region-specific and...
Abstract Understanding neural mechanisms of consciousness remains a challenging question in neuroscience. A central debate the field concerns whether arises from global interactions that involve multiple brain regions or focal activity, such as sensory cortex. Additionally, theories diverge between Global Neuronal Workspace (GNW) hypothesis, which emphasizes frontal and parietal areas, Integrated Information Theory (IIT), focuses on information integration within posterior cortical regions....
Nanoparticles exhibiting geometrical and chemical anisotropies hold promise for environmentally responsive materials with tunable mechanical properties. However, a comprehensive understanding of their interfacial behaviors remains elusive. In this paper, we control the anchoring orientation polystyrene nanodumbbells by adjusting interparticle forces. The film nanostructure is characterized angle analysis individual dumbbells from cross-sectional EM data: undergo transitions distinctive...
Herein, the fabrication of MoS 2 /p‐GaN heterostructures via direct chemical vapor deposition (CVD) and transfer methods are demonstrated. The molybdenum disulfide (MoS ) layers grown on p‐GaN sapphire substrates CVD under same growth conditions. Subsequently, in case substrate, from substrate is transferred onto to produce a vertically stacked heterostructure. Atomic force microscopy (AFM) images indicate that directly GaN exhibits granular structure, whereas triangle‐shaped grains. In...