Discover Insights
Connect with ExcellenceDGIST Scholar
Recently Added Items
more
Biomimetic artificial olfactory systems based on metal-organic frameworks: from material design to intelligent pattern recognition
Artificial olfactory systems (AOS) capable of mimicking biological olfaction are emerging as powerful tools for complex gas analysis. However, conventional sensing materials often face limitations regarding selectivity, response speed, and high operating temperatures. Metal-organic frameworks (MOFs) offer an ideal solution to these challenges due to their ultra-high porosity and tunable chemical functionality. This review presents a comprehensive overview of strategies to implement high-performa
2027-01
SCORE beamforming: Spectral COherence REfinement for high-contrast ultrafast Doppler imaging
Delay-and-sum (DAS) beamforming is widely used in ultrasound flow imaging due to its computational simplicity; however, its high sidelobe levels significantly degrade image contrast. Coherence factor (CF) beamforming partially alleviates this limitation by emphasizing spatial coherence, yet residual incoherent energy remains and continues to impair image quality. In this study, we propose a dual-stage beamforming approach that integrates CF weighting with a frequency-domain filtering stage desig
2027-01
Poling-tunable self-powered ultraviolet-C photodetection in mechanochemically derived HfO2–Ga2O3–ZnO/polyethyleneimine composite films
Distinct from previously reported HfO2/Ga2O3 layered heterostructures, in which HfO2 1–2 nm insulating interlayer was used and the device operated mainly under external bias, our work presents a mechanochemically derived HfO2–Ga2O3–ZnO multicomponent composite, a PEI-modified interface, a self-powered response at 0 V, and negative pre-poling used to tune the zero-bias response/noise balance. Polyethyleneimine (PEI) was used as a surface and interfacial modifier to form HGZO@PEI films with improv
2027-02
Valorization of Agave amica leaf waste into high-performance natural fibers for polymer composites
This study reports the extraction and characterization of Agave amica leaf fibers (AALFs), an underutilized agricultural by-product, as a sustainable reinforcement for polymer composites. Fibers were extracted via eco-friendly hot-water retting and sun-drying, exhibiting a fineness of 12.65 ± 3.25 tex, density of 1.08 ± 0.055g cm⁻³, and moderate cellulose content (53.45 wt%). Structural analyses (XRD, FTIR, SEM–EDS) confirmed a crystalline, fibrillated morphology compatible with polymer matrices
2026-12
Monthly Top Download
more
Edge-Server Workload Characterization in Vehicular Computation Offloading: Semantics and Empirical Analysis
Edge server-assisted computation offloading enables vehicles to leverage server compute resources to deliver connected services, overcoming the limitations of onboard resources. Understanding the compute workloads of edge servers is crucial for effective resource management and scheduling, yet this task is challenging due to the complex interplay of factors such as vehicle mobility and computation offloading patterns. To address this, we propose an empirical analysis framework that systematicall
2024-06
PDF
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
PDF
Multiple Sampling Capsule Robot for Studying Gut Microbiome
Longitudinal analysis of the gut microbiota is crucial for understanding its relationship with gastrointestinal (GI) diseases and advancing diagnostics and treatments. Most ingestible sampling devices move passively within the GI tract, rely on physiological factors, and fail at multipoint sampling. This study proposes a multiple-sampling capsule robot capable of collecting gut microbiota from various locations within the GI tract with minimal cross-contamination. The proposed capsule comprises
2025-11
PDF
Low-Cost and Easy-to-Build Soft Robotic Skin for Safe and Contact-Rich Human - Robot Collaboration
Although many soft robotic skins have been introduced, their use has been hindered due to practical limitations, such as difficulties in manufacturing, poor accessibility, and cost inefficiency. To solve this, we present a low-cost, easy-to-build soft robotic skin utilizing air-pressure sensors and 3D-printed pads. In our approach, we utilized digital fabrication and robot operating system (ROS) to facilitate the creation and use of the robotic skin. The skin pad was fabricated by printing therm
2024-03
PDF