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Exploring the potential of multifunctional MWCNT/PDMS nanocomposites in thermal and mechanical energy harvesting
In this work, it was shown that a nanocomposite of multi-walled carbon nanotubes (MWCNTs) and polydimethylsiloxane (PDMS) is a versatile material that can convert both thermal and mechanical energy into electrical energy. The MWCNT/PDMS nanocomposite with a MWCNT concertation of 2 mass% was chemically etched to expose the carbon nanotubes on the surface of the nanocomposite. This resulted in a significant reduction in contact resistance, an increase in electrical conductivity, and consequently,
2026-05
Self-poled and poling-free efficient piezoelectric nanogenerators for power generation and self-powered applications
Piezoelectric nanogenerators (PENGs) have emerged as promising energy harvesters capable of converting waste mechanical energy into usable electrical power for self-powered electronic applications. Traditionally, PENGs require an external poling process to align ferroelectric dipoles and achieve efficient operation. However, reliance on high-voltage poling, time-consuming processing, and potential material degradation limits the scalability and practicality of conventional PENGs. Recent research
2026-06
Flexible laser-induced graphene biosensor enables real-time, in vivo profiling of wound healing cytokine dynamics
Laser-induced graphene (LIG) provides a scalable route to high-performance carbon nanomaterials, but its biomedical translation has been hindered by limited robustness, biocompatibility, and in vivo validation. Here, we report a flexible, elastomer-integrated LIG biosensor that enables continuous monitoring, label-free monitoring of inflammatory cytokines within living tissue. By systematically optimizing the laser processing parameters, we generated stable, low-resistance graphene networks that
2026-06
AI-driven digital holographic microscopy for label-free quantitative cellular analysis: toward low-cost and field-deployable platforms
Recent progress in artificial intelligence (AI) and digital holographic microscopy (DHM) has enabled quantitative, label-free, and noninvasive cellular imaging with unprecedented precision. This review provides an overview of AI-driven DHM technologies that transform classical holographic phase reconstruction and cellular analysis into real-time, portable biomedical solutions. After outlining the optical and computational fundamentals of DHM and quantitative phase imaging, we describe how deep g
2026-05
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Modeling and Precision Stop of Metropolitan Train with Receding Horizon Control
Modeling of new type of metropolitan train, which is to be introduced on Korean railways in near future, and the control strategy for precision stop is tested in simulation. Modeling is carried out based on the raw test data and previously measured specifications provided by the Korean Railroad Research Institute. Control strategy is divided to two stages. Feed-forward and PI controller was implemented for initial stage. The controller is then switched to a Linear Receding Horizon Controller clo
2015
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A Power-Efficient μ-Heater Driving Circuit for Gas Sensor
Metal-oxide-semiconductor gas sensor consists of sensing layer detecting exposed gases and micro heater generating heat necessary for achieving the best performance of gas reaction. For gas sensor to get high sensitivity, optimal temperature of micro heater should be supplied to sensing layer. In addition, optimal temperature range of each micro heater has different characteristics based on sensing materials and target gases, which needs a demand for designing micro heater driving system. As a s
2017
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Recent Advances in Ultra-High-Speed Wireline Receivers with ADC-DSP-Based Equalizers
High-speed wireline data transceivers (TRX) with analog-to-digital converter (ADC) followed by digital signal processor (DSP) on the receiver (RX) equalizer became popular for applications requiring >100 Gb/s per-lane data rate over long-reach (LR) channels, especially for datacenter applications. With the digital-to-analog converter (DAC)-based transmitter (TX) including DSP-based TX signal processing, the overall structure of DAC/ADC-DSP-based wireline TRXs became similar to modulator/demodula
2024-11
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Characterization of the interaction between Parkin and TSPO-VDAC complex in mediating immune responses in Drosophila
Parkin, an E3 ubuquitin ligase associated with Parkinson's disease (PD), has recently been implicated in mediating innate immunity. However, molecular details regarding parkin-mediated immune response remain to be elucidated. Here, we identified mitochondrial TSPO-VDAC complex to genetically interact with parkin in mediating responses against infection and wound in Drosophila. The loss-of-function mutation in parkin results in defective immune response against bacterial infection. Additionally,
2016
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