A5032343464- Characterization and Applications of Magnetic Nanoparticles
- Magnetic properties of thin films
- Theoretical and Computational Physics
- Metamaterials and Metasurfaces Applications
- Medical Imaging and Pathology Studies
- Lung Cancer Diagnosis and Treatment
- Graphene research and applications
- Nanowire Synthesis and Applications
- Microfluidic and Bio-sensing Technologies
- Stochastic processes and statistical mechanics
- Salivary Gland Tumors Diagnosis and Treatment
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Urological Disorders and Treatments
- Analytical Chemistry and Sensors
- Ureteral procedures and complications
- 2D Materials and Applications
- Geomagnetism and Paleomagnetism Studies
- Opinion Dynamics and Social Influence
- Pelvic and Acetabular Injuries
Seoul National University
1999-2024
Advanced Institute of Convergence Technology
2024
Universities UK
1985
Abstract Graphene has emerged as one of the most promising materials for next‐generation gas sensor platforms due to its high flexibility, transparency, and hydrophobicity. However, graphene shows inherent low selectivity in sensing. This led extensive development noble‐metal decoration on modulate surface chemistry enhanced selectivity. While noble metals such Pt, Pd, Au have widely been employed functionalize surface, non‐noble metal remained underexplored. Here, an unprecedented...
The energy dissipation of a single-domain magnetic nanoparticle via its intrinsic damping can be used to achieve hyperthermia in biomedical applications. authors propose mechanism convert the power an oscillating field heat through magnetically soft nanoparticles, based on their resonantly excited spin precession. rate has maximum at resonance, where applied rotates Larmor frequency. This provides specific loss 10---100 times that conventional means, with reliability and control.
We explored the reliable control of high-efficiency specific-loss power (SLP) using magnetic nanoparticles in vortex state, where value is one order magnitude higher than those conventional mechanisms SLP reported thus far. The underlying mechanism based on precession a single core and subsequent dissipation due to intrinsic damping when vortex-state spheres are resonantly excited. Owing dynamic characteristics nanoparticles, resonant excitation vortex-core variable with particle size as...
We performed micromagnetic numerical calculations to explore the novel dynamics of two vortex cores magnetically coupled via long-range dipolar interactions and short-range exchange in a single element spherical nano-shells. One core is located upper half-shell other lower half-shell. Under given static magnetic field, they show unique dynamic motions that have yet be reported so far. For parallel orientations, slow large-amplitude orbital around field direction, both cores' positions on...
The Cu step bunches formed during the synthesis of graphene by chemical vapor deposition (CVD) have been intensively studied to optimize electrical and mechanical properties graphene. For example, it has reported that compressive strain due mismatch between thermal expansion coefficients tends be released forming periodic steps depending on number layers. However, stacking-order dependence in multilayer not yet investigated. Here, we show twisted bilayer (tBLG) with less induces formation...
The authors extend the microscopic droplet theory of Ising systems, developed recently, to incorporate effects an ordering field. yields a free energy which is solution renormalisation group equation describing nesting, and has full scaling form. behaviour near coexistence curve investigated found display essential singularity suggested by primitive models, but with parameters renormalised in physically intelligible way. population function implied parametrised simple way, space dimension...