A5065161019- Microfluidic and Capillary Electrophoresis Applications
- Analytical chemistry methods development
- Mass Spectrometry Techniques and Applications
- Electrowetting and Microfluidic Technologies
- Radioactive element chemistry and processing
- Innovative Microfluidic and Catalytic Techniques Innovation
- Biosensors and Analytical Detection
- Nuclear Materials and Properties
- Microfluidic and Bio-sensing Technologies
- Breast Cancer Treatment Studies
- Analytical Chemistry and Chromatography
- Tissue Engineering and Regenerative Medicine
- Fault Detection and Control Systems
- Ammonia Synthesis and Nitrogen Reduction
- Biosimilars and Bioanalytical Methods
- Dermatology and Skin Diseases
- Drug Transport and Resistance Mechanisms
- Medicinal Plants and Neuroprotection
- Prostate Cancer Treatment and Research
- Endometrial and Cervical Cancer Treatments
- Advanced Machining and Optimization Techniques
- Combustion and Detonation Processes
- Industrial Vision Systems and Defect Detection
- Cholinesterase and Neurodegenerative Diseases
- Plant-derived Lignans Synthesis and Bioactivity
Korea Atomic Energy Research Institute
2018-2024
University of Toronto
2015-2016
Seoul National University
1995-2015
Kyungpook National University
2004
Samsung (South Korea)
2002
Environmental damage from serious nuclear accidents should be urgently restored, which needs the removal of radioactive species. Radioactive iodine isotopes are particularly problematic for human health because they released in large amounts and retain radioactivity a substantial time. Herein, we prepare platinum-coated iron nanoparticles (Fe@Pt) as highly selective reusable adsorbent species, i.e., iodide (I-), (I2), methyl (CH3I). Fe@Pt selectively separates species seawater groundwater...
Abstract: To find a better way to deliver drugs into hair follicles, we tried two approaches: single topical application using various liposomes; and iontophoresis combined with of ionic liposome. After delivery adriamycin (ADR) wax‐depilated rat skin, the transport drug was examined under fluorescence microscopy. Most liposomal ADR showed more effective transdermal transfollicular penetration than free ADR. Among tested liposomes, non‐ionic GDL liposome (GDL/CH/POE‐10 = glycerol...
Automated coupling of headspace-single drop microextraction (HS-SDME) and CE has been demonstrated using a commercial instrument. When hanging at the inlet tip capillary for is used as acceptor phase, HS-SDME becomes simple but powerful sample pretreatment technique before injection to facilitate cleanup enrichment. By combining with an on-line preconcentration technique, large volume stacking electroosmotic flow pump, sensitivity can be improved further. The overall enrichment factors...
We introduce an automated method to facilitate in-line coupling of digital microfluidics (DMF) with HPLC-MS, using a custom, 3D-printed manifold and custom plugin the popular open-source control system, DropBot. The was designed interface directly commercial autosamplers (with no prior modification), suggesting that it will be widely accessible for end-users. system demonstrated compatible samples dissolved in aqueous buffers neat methanol validated by application common steroid-labeling...
Large volume stacking using an EOF pump (LVSEP) is realized for CE with ESI-MS. In LVSEP of anions, the adverse effects a long sample matrix plug were overcome by pumping out separation capillary to inlet vial under potential reverse polarity. Therefore, it was necessary supply backup run buffer from outlet end capillary, which not trivial in most ESI-MS configurations. We solved this difficulty simply placing supplying during removal and process. addition, methanol used as solvent enabling...
Core needle biopsy (CNB) sampling is known to be inexpensive and minimally invasive relative traditional tissue resectioning. But CNBs are often not used in analytical settings because of the tiny amount sample analyte. To address this challenge, we introduce an method capable multiplexed steroid quantification CNB samples—those studied here ranged mass from 2 8 mg. The new uses digital microfluidics extract steroids samples (including a solid-phase extraction cleanup step) followed by...
A long-lived radioisotope of iodine, 129I, is a fission product and released into our environment by spent nuclear fuel reprocessing plants or accidents. The measurements pertaining to 129I are focused on evaluating the effects using human-made products as environmental tracers for monitoring samples from various types matrices regulating radioactive contaminants waste repository safety. Thermal ionization mass spectrometry (TIMS), accelerator (AMS), inductively coupled plasma (ICP-MS) have...
An investigation of the effect plant matrix on supercritical fluid extraction efficiency five schisandrin derivatives is reported, exhibiting a great difference with respect to depending matrix. Pure CO2 at 60°C and 34.0 MPa cannot fully recover from leaves as much other matrices. Only 36.9% these compounds are extracted Schisandra chinensis by in comparison organic solvent extraction. However, more than 80% obtained both stem fruit parts. Ethanol addition also shows different matrix; that...
Trace metal ions such as <TEX>$Cd^{2+}$</TEX>, <TEX>$Ni^{2+}$</TEX>, and <TEX>$Zn^{2+}$</TEX> in a highly saline sample were subjected to on-line complexation with 4-(2-thiazolylazo) resorcinol (TAR) dissolved background electrolyte (BGE) under transient isotachophoresis (TITP) conditions. A long plug of the sample, containing trace but devoid TAR, was injected into coated capillary filled BGE composed 150 mM 2-(cyclohexylamino) ethanesulfonic acid (CHES) 110 triethylamine (TEA) at pH 9.7....
The mechanism of selective SiO2 etching over Si3N4 has been studied with the simulation a ladder-type surface profile and specially designed experiments in submicron self-aligned contact (SAC) process. profile, which is boundary broken shoulder Si3N4, normally observed during highly SAC etching. structure two adjacent lines prepared etched wave plasma (SWP) system order to investigate effect fluorocarbon polymer deposition on selectivity ladder profile. This experiment shows that removal...