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Protein addressing in packaged multi-channels is developed for calorimetric biosensors in this research. First, we use electrodeposition method to fabricate chitosan film as the substrate on the patterned electrode surface. Second, the fabricated chitosan film was functionalized with alkyne groups for click chemistry. Thirdly, the azide-tagged protein is immobilized on the electrode by electrical...
X-ray detectors made from crystalline silicon or amorphous silicon are widely used in medical diagnosis, such as mammography or computed tomography. However, state-of-art of X-ray detectors are still suffering from high manufacturing cost. In this article, we demonstrate a methylammonium lead iodide (CH3NH3PbI3) based photodiode for direct X-ray detection. The solution-processed perovskite photodiode...
GaAs nanowires fabricated by an anodic etching have some advantages over conventional dry crystal growth and wet chemical dissolution techniques in terms of their formation. However, undesired electrical insulating behavior caused by deep interface states is observed. It is known that the interface states originate from the dissociated As atoms between GaAs core and Ga2O3 outer layer. Here, we investigated...
Titanium dioxide-supported silver nanoparticles was synthesized by a facile method and studied as a sorbents for elemental mercury (Hg°). The concentration of deposited silver nanoparticles was in the range of 0.1 – 5.0% weight of titanium dioxide powder. XRD and TEM results confirmed that silver nanoparticles with a diameter size ranging from 2–5 nm were successfully deposited on the surface of titanium...
We have analyzed inter-particle potential during binary collision of two fine particles suspended at the plasma/sheath boundary. For this analysis, we have employed a tracking analysis which gives time evolution of the particle position automatically from the movie of particle behavior. The fluctuation of inter-particle potential is originated from a major component of the plasma potential fluctuation...
Glass is one of the essential materials for optical devices due to its transparency. It usually loses about 4% of energy of an incident light at its interface. In order to suppress its reflection, moth-eye structure, which is the nanoscale tapered pillar array, has a remarkable anti-reflection performance. In its fabrication method, nanoimprint lithography has been paid attention due to the availability...
Increasing the energy efficiency of magnetic memories has been the focus of many research labs in the past decades. Spin polarized current-based switching, although demonstrating promising results, is still far from the fundamental energy limits of the magnetic logic. In order to take a leap towards the inherent energy advantages of the magnetic logic, the principle of straintronics has been proposed...
A process of silver nanowire transparent conductive films has been developed to synthesize by organic needle-shaped precursor painting reduction. Needle-shaped nanowire precursors are simply synthesized by ultrasound irradiation of silver oxide and carboxylic acid as starting materials. The aspect ratio of the needle-shaped precursors is chenged by condition of ultrasound irradiation. Silver nanowires...
Hafnium Disulfide (HfS2) is one of the transition metal dichalcogenides which is expected to have high electron mobility and finite bandgap. However, the fabrication process for HfS2 based electron devices has not been established, and it is required to bring out the superior transport properties of HfS2. In this report, we have investigated the effects of ALD HfO2 passivation on the current properties...
We propose an eyeglasses-type retinal imaging system using MEMS scanner. The laser scanning confocal measurement system is incorporated in the glasses frame. The two dimensional electromagnetic MEMS scanner is used. The obtained image of the fundus of model eye using the instrument is also presented.
The present investigation reports a facile method for the biosynthesis of gold nanoparticles from the rind extract of Garcinia mangostana, a medicinal plant which acts as a reducing agent. It was observed that the aqueous gold ions, when exposed to the rind extract of G.mangostana were reduced in the solution, thereby leading to the formation of gold nanoparticles (GMREGNP). The structural characterization...
Single-Walled Carbon Nanotubes (SWCNTs) have been shown to be a promising candidate for flexible electronics, especially logic circuits. However, very little study on SWCNT based analog circuit elements, such as amplifiers and comparators, on flexible substrates has been reported. For practical applications, fully functional flexible electronic devices must have an analog input circuitry to achieve...
We report the fabrication of graphene quantum dots on Cu substrates by thermal CVD. The synthesized high-density graphene quantum dots exhibit strong surface enhanced Raman scattering (SERS) effects. The nanoscale distance of 30∼50nm between neighboring quantum dots combined with quantum dots to form nanostructures favorable for plasmonic coupling enhanced high local electric fields, which lead to...
This paper presents the recent progress on CMOS-MEMS resonant transducers, including their applications, fabrication, performance, bottlenecks, and feasible solutions to address the existing issues. The MEMS/IC integration for sensors and actuators through the CMOS-MEMS technology will be emphasized. In addition, various transduction mechanisms employed in CMOS-MEMS will be introduced and compared...
In the present investigation, silver nanoparticles (SNP) were synthesised using Dipteracanthus prostratus (Poir.) Nees, leaves extract and were characterised using UV-Visible spectroscopy, High resolution transmission electron microscopy (HR-TEM), and X-ray diffraction. The UV-Vis analysis of nanoparticles shows absorption peak at 412 nm. HR-TEM results showed them to be spherical - ellipsoidal in...
Computing systems today are at the dawn of a new period in history: the cognitive era [1]. This transition is driven by the explosive growth in unstructured data enabled by new technology trends such as Social Media, the Internet of Things, and everywhere computing. Computing workloads are correspondingly shifting away from transactional processing and toward unstructured computational problems requiring...
This paper studies the degradation behaviors in IV characteristics and the corresponding improvement for p-channel double diffused drain metal-oxide-semiconductor (DDDMOS) transistors after hot carrier stress (HCS). There is an apparent current which is flowed from source to drain in the off-region after HCS. According to the IV characteristic comparisons between different device structures and ISE-TCAD...
This paper presents the analysis of an orthogonal multi-beam Lloyd's mirror interferometer for fabrication of two-axis gratings, which is employed as a measurement standard. Conventionally, for the fabrication of such complicated micro patterns, ultra-precision turning with a fast tool servo or lithography process with masks has been employed. However, they require long machining or fabrication time...
In this paper, a theoretical and Monte-Carlo analysis on the percolation behavior of single-walled carbon nanotube (SWNT) network is proposed. For such network structures that are commonly used as the conduction channels of thin-film transistors (TFTs), the dependence of channel resistance on channel length, tube density, and average tube length is carefully studied. The tube-tube contact resistance...
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