A5001469155- Urinary Bladder and Prostate Research
- Pelvic floor disorders treatments
- Diverse Approaches in Healthcare and Education Studies
- Urological Disorders and Treatments
- Prostate Cancer Diagnosis and Treatment
- Diverse Topics in Contemporary Research
- Sexual function and dysfunction studies
- Block Copolymer Self-Assembly
- Urinary Tract Infections Management
- Education, Safety, and Science Studies
- Consumer Perception and Purchasing Behavior
- Psychosocial Factors Impacting Youth
- Prosthetics and Rehabilitation Robotics
- Muscle activation and electromyography studies
- Hormonal and reproductive studies
- Multilevel Inverters and Converters
- Pediatric Urology and Nephrology Studies
- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Advanced DC-DC Converters
- Microgrid Control and Optimization
- Stroke Rehabilitation and Recovery
- Urologic and reproductive health conditions
- Ureteral procedures and complications
- Pharmaceutical and Antibiotic Environmental Impacts
Ajou University
2024-2025
Korea Advanced Institute of Science and Technology
2017-2024
Yonsei University
2015-2024
Hongik University
2020-2024
Hanseo University
2015-2024
Severance Hospital
2014-2024
LG Chem (South Korea)
2023
University of Idaho
2020-2021
Seoul National University
2001-2020
Northwell Health
2020
Abstract Hardware-based cryptography that exploits physical unclonable functions is required for the secure identification and authentication of devices in Internet Things. However, are typically based on anticounterfeit identifiers created from randomized microscale patterns or non-predictable fluctuations electrical response semiconductor devices, validation an encrypted signature relies a single-purpose method such as microscopy measurement. Here we report nanoscale function labels...
Multiphase motors are usually designed to have the concentrated winding and nonsinusoidal airgap flux density distribution in order maximize torque per ampere. This means that phase voltage of a multiphase motor has waveform. Accordingly, conventional analysis on space vector pulse-width modulation (SVPWM), which is confined sinusoidal voltage, should be extended voltage. In this paper, based multiple d-q spaces concept novel SVPWM synthesize an arbitrary proposed. Throughout five-phase...
In this paper a voltage modulation method based on triangular carrier wave for the three-phase four-leg source converter is described. The can produce three output voltages independently with one additional leg. proposed be implemented single by simple but useful "offset voltage" concept. equivalent to so called three-dimensional space vector PWM method, its implementation much easier. maximum magnitude of balanced and zero sequence voltage, which synthesized simultaneously, are derived....
In the square-wave voltage signal injection sensorless drive of interior permanent-magnet synchronous machine, can be distorted by inverter nonlinearity effects especially when is low. If that happens, a high-frequency (HF) current which contains rotor position information could also distorted, directly leads to an error in estimation. This paper analyzes on voltage, induced ripple, and estimation performance sequence proposes method minimize impact regulation HF ripple. By simulations...
Block copolymer (BCP) nanopatterning has emerged as a versatile nanoscale fabrication tool for semiconductor devices and other applications, because of its ability to organize well-defined, periodic nanostructures with critical dimension 5-100 nm. While the most promising application field BCP been devices, versatility BCPs also led enormous interest from broad spectrum areas. In particular, intrinsically low cost straightforward processing have widely recognized their large-area parallel...
A novel strategy for robust and ultrathin (<1 µm) multilayered protective structures to address uncontrolled Lithium (Li) dendrite growth at Li-metal battery anodes is reported. Synergetic interaction among Ag nanoparticles (Ag NPs), reduced graphene oxide (rGO) films, self-assembled block-copolymer (BCP) layers enables effective suppression of dendritic Li growth. While NP layer confines the metal underneath rGO layer, BCP facilitates fast uniformly distributed flux Li-ion transport...
In a three-phase four-wire utility system, unbalanced loads and many single-phase nonlinear result in neutral line current that is zero-sequence current. To deal with high power this paper suggests multilevel four-leg pulsewidth modulation (PWM) voltage-source inverter (VSI) as topology for the applications where function required to control component well dq components. This proposes carrier-based PWM method VSI along introducing novel offset voltage. The proposed voltage makes it possible...
Few clinical studies have evaluated the integrity of repaired tendons and identified timing retears through use serial imaging.Retears after arthroscopic rotator cuff repair are uncommon in late postoperative period (after 3 months).Case series; Level evidence, 4.Among 221 repairs that were performed at a single hospital between May 2010 February 2012, 61 involved this study. Rotator tears consisted 12 small, 31 medium, 8 large, 6 massive tears. Additionally, 4 isolated subscapularis...
Effective surface enhancement of Raman scattering (SERS) requires strong near-field as well effective light collection plasmonic structures. To this end, nanoparticle (NP) arrays with narrow gaps or sharp tips have been suggested desirable We present a highly dense and uniform Au nanoscale gap array enabled by the customized design NP shape arrangement employing block copolymer self-assembly. Block self-assembly in thin films offers hexagonally packed nanopost template over entire 2 in....
Abstract Nanoscale fabrication of smart materials relying on the molecular self‐assembly block copolymers (BCPs) has been recognized as a valuable platform for various next‐generation functional structures. In this Progress Report, recent advances in BCP process, which paved way viable applications emerging nanotechnologies, are highlighted. Effective light‐induced based photothermal annealing high‐χ BCPs and conformal 3D surface nanopatterning exploiting chemically modified graphene...
Electrolytic capacitors are widely used in various power electronic systems, such as adjustable speed drives (ASD) or uninterruptible supplies (UPS). Their high energy density (J/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ) features make them an attractive candidate for smoothing voltage ripple and pulse discharge circuitry. However, electrolytic have the shortest life span of components circuits, usually due to their wear-out...
Background: Anatomic tunnel positioning is important in anterior cruciate ligament (ACL) reconstructive surgery.Recent studies have suggested the limitations of a traditional transtibial technique to place ACL graft within anatomic position on femur.The purpose this study determine if 2-incision tibial tunnel-independent can femoral native center when compared with technique, as placement tunnelindependent unconstrained by tunnel. Methods:In sixty-nine patients, single-bundle reconstruction...
Abstract Vertically aligned nanopatterns of high Flory‐Huggins parameter ( χ ) block copolymers (BCPs) are desirable for effective pattern transfer sub‐10‐nm scale self‐assembled morphologies. To this end, BCP thin film is required to interface with neutralized surface energy at both substrate and free‐surface, among which neutralization top free‐surface generally more difficult without well‐defined geometry. Therefore, various types top‐coat layers have been developed, many which, however,...
Antireflective surface is a crucial component for high-performance photonic systems but has been principally focused on hard, flat device geometry. We present an antireflective strategy deformable geometry that combines superior optical performance with mechanical robustness. Bioinspired nanohole arrays are embedded into transparent polymer layer by exploiting block copolymer self-assembly. The resultant nanoengineered reduces light reflection over 70% across the visible spectrum compared to...
This paper proposes a new strategy to estimate the rotor flux of an induction machine. The electrical model machine presents basic idea based on observer structure, which is composed voltage and current model. However, former has defects sensitivity parameters in low-speed range, latter also that are sensitive wide-speed range. In spite these shortcomings, closed-loop two models been prevalent estimation method for direct field-oriented control. this paper, generalized analysis called...
Objective: Resiniferatoxin (RTX) is an analogue of capsaicin with more than 1,000 times its potency in desensitizing C-fiber bladder afferent neurons. This study investigated the safety and efficacy intravesical RTX patients refractory detrusor hyperreflexia (DH).Methods: Thirty-six (22 males, 14 females) neurologically impaired (20 spinal cord injury, 7 multiple sclerosis, 9 other neurologic diseases) urodynamically verified DH intractable urinary symptoms despite previous anticholinergic...
Angle resolved photoemission (ARPES) data from the electron doped cuprate superconductor Sm$_{1.86}$Ce$_{0.14}$CuO$_4$ shows a much stronger pseudo-gap or "hot-spot" effect than that observed in other optimally $n$-type cuprates. Importantly, these effects are strong enough to drive zone-diagonal states below chemical potential, implying d-wave superconductivity this compound would be of novel "nodeless" gap variety. The gross features Fermi surface topology and low energy electronic...