A5103224110- Carbon Nanotubes in Composites
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Gas Sensing Nanomaterials and Sensors
- Mechanical and Optical Resonators
- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Advanced Sensor and Energy Harvesting Materials
- Copper-based nanomaterials and applications
- Neuroscience and Neural Engineering
- Ga2O3 and related materials
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Electrowetting and Microfluidic Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Transition Metal Oxide Nanomaterials
- MXene and MAX Phase Materials
- Hydrogen Storage and Materials
- Plasma Diagnostics and Applications
- Nanotechnology research and applications
- Nanomaterials and Printing Technologies
- Electromagnetic wave absorption materials
- Dendrimers and Hyperbranched Polymers
Gangneung–Wonju National University
2019-2025
Government of the Republic of Korea
2024
Northeastern University
2009-2017
Jeonbuk National University
2013
Kangnam University
2013
National Institute of Standards
2013
National Institute of Standards and Technology
2013
Universidad del Noreste
2013
Here, we design and develop high-power electric double-layer capacitors (EDLCs) using carbon-based three dimensional (3-D) hybrid nanostructured electrodes. 3-D electrodes consisting of vertically aligned carbon nanotubes (CNTs) on highly porous nanocups (CNCs) were synthesized by a combination anodization chemical vapor deposition techniques. A electrode-based supercapacitor showed enhanced areal capacitance accommodating more charges in given footprint area than that conventional CNC-based device.
Here, we report that Nb doping of two-dimensional (2D) MoSe2 layered nanomaterials is a promising approach to improve their gas sensing performance. In this study, atoms were incorporated into 2D host matrix, and the concentration could be precisely controlled by varying number Nb2O5 deposition cycles in plasma enhanced atomic layer process. At relatively low dopant concentrations, showed device durability as well NO2 response, attributed its small grains stabilized grain boundaries....
We present the fabrication and characterization of nanoscale electrical interconnect test structures constructed from aligned single-wall carbon nanotubes using a template-based fluidic assembly process. This CMOS-friendly process enables formation highly parallel nanotube on SiO2/Si substrates widths lengths that are limited only by lithographical limits and, hence, can be easily integrated onto existing Si-based platforms. These withstand current densities ∼107 A·cm−2, comparable or better...
To encounter the burgeoning energy demands of future, it is imperative to focus on progress innovative and profitable techniques for hydrogen (H2) evolution, coupled with an enriched stability photocatalysts. In this work, we have effectually prepared CdS, CdS:Ce, CdS:(Ce, Ga) nanoparticles through a chemical refluxing method at 120 °C. Comprehensive structural analysis confirmed effectual incorporation Ce Ga ions in place Cd2+ CdS matrix. Morphology indicates that samples are irregularly...
Abstract Directional transport properties at the nanoscale remain a challenge, primarily due to issues pertaining control over underlying anisotropy and scalability macroscopic scales. Here, we develop facile approach based on template‐guided fluidic assembly of high mobility building blocks – single walled carbon nanotubes (SWNTs) fabricate ultrathin anisotropic SWNTs films. A major advancement is complete in assembled nanostructure, realized by three‐dimensional engineering dip‐coated film...
The excitonic behavior in two-dimensional (2D) heterostructures of transition metal dichalcogenide atomic layers has attracted much attention. Here, we report, for the first time, ultrafast charge carriers heterostructure (NbSe2) and semiconductor (WSe2) via spectroscopy. We observe a blue-shift excited-state absorption peak time-resolved spectra with time delays both as-grown semiconducting WSe2 metal–semiconductor heterostructure. However, shows clear difference position relaxation its...
Single-walled carbon nanotube (SWCNT) network architectures combined with flexible mediums (especially polymers) are strong candidates for functional devices and composite structures requiring the combination of unique electronic, optical, and/or mechanical properties SWCNTs polymer materials. However, to build SWCNTs, it is required have abilities assemble incorporate in desired locations, orientations, dimensions on/inside substrates. Here, we present two- three-dimensional SWCNT...
Here we report the highly effective detection of hydrogen sulfide (H2S) gas by redox reactions based on single-walled carbon nanotubes (SWCNTs) functionalized with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) as a catalyst and also discuss important role water vapor in electrical conductivity SWCNTs during sensing H2S molecules. To explore mechanism, investigate adsorption properties (CNTs) effects TEMPO functionalization using first-principles density functional theory (DFT) summarize...
Abstract Suspended single-walled carbon nanotubes (SWCNTs) offer unique functionalities for electronic and electromechanical systems. Due to their outstanding flexible nature, suspended SWCNT architectures have great potential integration into However, current techniques integrating with substrates are largely absent, especially in a manner that is both scalable well controlled. Here, we present new nanostructured transfer paradigm print well-defined nano/microscale networks on 3D patterned...
The development of photodetectors is crucial in fields such as optical communication, image sensing, medical devices and military equipment, where high sensitivity paramount. We fabricated an ambipolar photodiode using monolayer triclinic ReSe 2 , synthesized by chemical vapor deposition on p-type Si substrate. photodetector has a broadband response range from 405 to 1100 nm. device exhibits NIR radiation with I ph /I dark (ON/OFF) ratio 5.8 × 10 4 responsivity (R) 465 A/W, specific...
We investigate the electrical reliability of nanoscale lines highly aligned, networked, metallic/semiconducting single-walled carbon nanotubes (SWCNTs) fabricated through a template-based fluidic assembly process. find that these SWCNT networks can withstand DC current densities larger than 10 MA cm(-2) for several hours and, in some cases, days. develop test methods show degradation rate, failure predictability and total device lifetime be linked to initial resistance. Scanning electron...
Abstract Precise and selective removal of silicon nitride (SiN x ) over oxide (SiO y in a oxide/nitride stack is crucial for current three dimensional NOT-AND type flash memory fabrication process. In this study, fast isotropic etching SiN SiO has been investigated using ClF 3 /H 2 remote plasma an inductively coupled system. The etch rate 80 nm/min with the selectivity ~ 130 was observed under at room temperature. Furthermore, addition H to resulted increase 200 while lowering both due...
The growth of one-dimensional (1D) ZnO systems has been attaining ample engrossment because their unique photocatalytic and optoelectronic properties. In this context, we synthesized the high-quality ZnO:Er nanorods through an inexpensive facile solvothermal route. Morphological studies revealed that fabricated samples correspond to nanorods. Erbium ion substitution into host matrix was affirmed via XRD Raman analyses. XPS analysis proposed Er in Zn (II) site occurred with trivalent ions....
Novel gas sensors that work at room temperature are attracting attention due to their low energy consumption and stability in the presence of toxic gases. However, development sensing characteristics is still a primary challenge. Diverse reaction pathways adsorption for molecules required fabricate sensor works with high sensitivity, selectivity, efficiency. Therefore, we enhanced performance by constructing hybridized nanostructure 1D–2D hybrid SnSe2 layers SnO2 nanowire networks...
In this study, the fabrication and electrical properties of aligned single-walled carbon nanotube (SWCNT) networks using a template-based fluidic assembly process are presented. This complementary metal-oxide-semiconductor (CMOS)-friendly allows formation highly lateral on SiO2/Si substrates, which can be easily integrated onto existing Si-based structures. To measure outstanding organized SWCNT devices, interfacial contact resistance between devices Ti/Au electrodes needs to improved since...