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Cold-injection synthesis of highly emissive perovskite nanocrystals
Colloidal perovskite nanocrystal (PeNC) has long been synthesized using the hot-injection method and room-temperature ligand-assisted reprecipitation as the prominent techniques(1,2). However, both methods have challenges for industrial-scale production(3, 4-5): the hot-injection method requires high temperatures, an inert gas environment and rapid cooling, which raise safety concerns, whereas ligand-assisted reprecipitation can exhibit limited productivity on scale-up. Here we present a cold-in
2026-03
Glial pathology networks reveal early olfactory vulnerability in post mortem human Alzheimer's disease
INTRODUCTION: The olfactory system is an early target in Alzheimer's disease (AD), yet regional glial pathology interactions remain poorly defined. We examined how glial activation and pathological burden differ between the olfactory cortex (OC) and olfactory bulb (OB) across disease stages. METHODS: Post mortem OC and OB samples from cognitively normal (CN), mild cognitive impairment, and AD cases were analyzed using immunohistochemistry and immunofluorescence for amyloid beta (A beta), phospho
2026-04
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Applications of flexible and stretchable three-dimensional structures for soft electronics
The development of devices that can be mechanically deformed in geometrical layouts, such as flexible/stretchable devices, is important for various applications. Conventional flexible/stretchable devices have been demonstrated using two-dimensional (2D) geometry, resulting in dimensional constraints on device operations and functionality limitations. Accordingly, expanding the dimensions in which such devices can operate and acquiring unique functionality that is difficult to implement in 2D pla
2023-06
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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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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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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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