Jae Eun Jang

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The possibility of performing spintronics at the molecular level may be realized in devices that combine fully spin polarized oxides, such as manganites with carbon nanotubes. However, it is not clear whether electrical transport between such different material systems is viable. Here, we show that the room-temperature conductance of(More)
The demand for increased information storage densities has pushed silicon technology to its limits and led to a focus on research on novel materials and device structures, such as magnetoresistive random access memory and carbon nanotube field-effect transistors, for ultra-large-scale integrated memory. Electromechanical devices are suitable for memory(More)
Stable uniform performance inkjet-printed polymer transistor arrays, which allow demonstration of flexible full-color displays, were achieved by new ambient processable conjugated copolymer semiconductor, and OTFT devices incorporating this material showed high mobility values>1.0 cm2 V(-1) s(-1). Bias-stress stability of the devices was improved with a(More)
We demonstrate the fabrication of solution based low temperature-processed p-type ZnO NRs doped with phosphorous by using a spin-on-dopant method coupled with a hydrothermal process. We confirmed the incorporation of phosphorous dopants into a ZnO crystal by analyzing SIMS profiles, together with the evolution of the photoluminescence spectra. It is further(More)
Submicrometer air gap structure has formed on diffuse reflection structure to improve light reflectance. Covering polymer or liquid on a diffuse reflector to make optical components induces the severe decrease of the total reflectance, since the diffuse reflected angle of some light rays is larger than the critical angle and the rays travel to the medium(More)
For biomedical implanted devices, a wireless power or a signal transmission is essential to protect an infection and to enhance durability. In this study, we present a magnetic induction technique for a power transmission without any wire connection between transmitter (Tx) and receiver (Rx) in a micro scale. Due to a micro size effect of a flat spiral(More)
Structural design factors of sensor units have been studied in order to enhance the sensitivity of pressure sensors based on utilizing a piezoelectric material for an artificial tactile sensor. In this study, we have primarily demonstrated the effect of a square pattern array design in a pressure sensor using ZnO nanowires. Nanowires grown on the edge of(More)
Simultaneous wireless information and power transfer (SWIPT) can be an essential technology for health monitoring. In this paper, the mutual coupling effect for SWIPT is presented with mathematical analysis and simulation results. With two dipole antennas arranged, the total received power for energy harvesting can be maximized as much as 5.6825 μW,(More)
Nanoelectromechanical (NEM) devices were developed for memory. The concept of a switch unit employing carbon nanotubes (CNT) was extended to random access memory (RAM). The unique vertical structure of these nanotubes allows a high integration density for devices. The easy fabrication process can give a high yield and reliability to device
In the growing field of brain-machine interface (BMI), the interface between electrodes and neural tissues plays an important role in the recording and stimulation of neural signals. To minimize tissue damage while retaining high sensitivity, a flexible and a smaller electrode with low impedance is required. However, it is a major challenge to reduce(More)