A5004040774- Advanced Sensor and Energy Harvesting Materials
- Nanomaterials and Printing Technologies
- Conducting polymers and applications
- Tactile and Sensory Interactions
- Ferroelectric and Negative Capacitance Devices
- Graphene research and applications
- Photoreceptor and optogenetics research
- Organic Light-Emitting Diodes Research
- Photochromic and Fluorescence Chemistry
- Electronic and Structural Properties of Oxides
- Multisensory perception and integration
- Semiconductor materials and devices
- Diamond and Carbon-based Materials Research
- Supercapacitor Materials and Fabrication
- Carbon Nanotubes in Composites
- Gas Sensing Nanomaterials and Sensors
- Advanced Materials and Mechanics
- Advanced Memory and Neural Computing
- Analytical Chemistry and Sensors
- Teleoperation and Haptic Systems
Pohang University of Science and Technology
2017-2024
Government of the Republic of Korea
2017
Although structural coloring and photoluminescence (PL) have been investigated for radiation-responsive color change, electroluminescence (EL) has not used the system. An electro-photoluminescence (EPL) change is presented here. The phosphors in alternating current (ACEL) act simultaneously as electro-luminophores photo-luminophores. EPL chromaticity systematically depending on ACEL frequency UV intensity. It found that PL variation intensity mechanism of change. revealed EL can be...
With emerging interest in foldable and stretchable displays, the need to develop transparent deformable electrode interconnection is increasing. Even though metal films have been standard electrodes conventional electronic devices due their high conductivity well-established process, they never used for electrodes. We present highly conductive Au film use them fabricate a perovskite light-emitting diode (PeLED) biaxially alternating current electroluminescence (ACEL) display. exhibit...
Abstract Although various stretchable optoelectronic devices have been reported, omni‐directionally transparent circuit lines a great challenge. Cracks are engineered and fabricated to be highly conductive patterned metal in which gold (Au) grids embedded. Au is deposited selectively the cracks form grid without any junction between lines. Since each line expandable under stretching, all directions. This study shows that thin coating of aluminum on oxide surface enables precise control...
Under the optimum conditions of a surfactant, conductivity low value product could be improved to high value.
Stretchable electrode is an essential part of soft electronic devices. Practical stretchable electrodes must meet the following requirements: metallic conductivity and no resistance change in various situations such as repeated large deformation, toxic environment, temperature change. This study suggests a simple design that meets all these requirements simultaneously. The consists liquid metal (LM) mesh pattern sandwiched between thermoplastic block copolymer (BCP) film BCP/Ag flake...
Abstract Demands for high‐ k dielectric materials increase as transistors scale down. One of the promising is HfO 2 owing to its large band gap, high constant, and excellent physical/chemical stability. Although several cost‐effective solution‐based deposition methods have been developed, their performances are inferior those obtained by vacuum processes (e.g., atomic layer deposition, sputtering). This study demonstrates a polymer‐assisted (PAD) Al‐doped thin films exhibiting remarkable...
Abstract Providing multisensory expression in a synchronized form helps human perception human‐machine interfaces. Synchronized visuo‐haptic integration has been relatively less explored because the two expressions operate by different principles. This study demonstrates flexible device that generates haptic sensation electrovibration (EV) conjunction with optical alternating‐current electroluminescence (ACEL). suggests material design and electric field modulation are effective for both EV...
This study proposes a substrate independent, large-area synthesis strategy for pyrolyzed carbon (Py-C) ultrathin films directly on various target substrates. The Py-C film has opto-electro-mechanical properties comparable to those of graphene. We demonstrated highly flexible pixelated display composed the film. showed remarkable performance as protective layer against Cu oxidation and chemical etching ITO.
Abstract The association of color and sound helps human cognition through a synergetic effect like intersensory facilitation. Although soft human‐machine interfaces (HMIs) providing unisensory expression have been widely developed, achieving synchronized optic acoustic in one device system has relatively less explored. It is because their operating principles are different terms materials, implementation mainly attempted structural approaches. Here, deformable display developed that...