Results 131 to 140 of about 1,487,229 (359)

Anti‐Counterfeiting Tags with Camouflaged QR Codes on Nanocavities, Using Polymer‐Dispersed Liquid Crystals

open access: yesAdvanced Materials Technologies, EarlyView.
A QR code, printed through a commercial printer on a thin plastic foil, pre‐coated with a nanocavity is proposed as an anti‐counterfeiting label. Nanocavity imparts distinctive optical properties in terms of light reflection and transmission. A thin layer of polymer‐dispersed liquid crystals (PDLC) is used to camouflage the QR code, that become ...
Giuseppe Nicoletta   +6 more
wiley   +1 more source

Investigating the Potential for Label‐Free Detection of Cell Apoptosis through Terahertz Nano‐Metasurfaces

open access: yesAdvanced Photonics Research, EarlyView.
This study demonstrates a label‐free optical method to monitor cells using a terahertz metasurface‐based biosensing platform. The obtained terahertz signal change for the cell‐contained nanoslots before and after external stimulus is analyzed in terms of transmittance and frequency shift, dynamically representing the cell apoptosis process.
Yeeun Roh   +4 more
wiley   +1 more source

Secure Federated Evolutionary Optimization—A Survey

open access: yesEngineering
With the development of edge devices and cloud computing, the question of how to accomplish machine learning and optimization tasks in a privacy-preserving and secure way has attracted increased attention over the past decade.
Qiqi Liu   +6 more
doaj  

Self‐Detecting Mid‐Infrared Dual‐Comb Spectroscopy Based on High‐Speed Injection‐Locked Quantum Cascade Lasers

open access: yesAdvanced Photonics Research, EarlyView.
A compact self‐detecting dual‐comb spectroscopy (DCS) system based on dispersion‐engineered, high‐speed packaged quantum cascade lasers (QCLs) at λ≈4.6 μm under coherent injection locking is demonstrated. Broad multiheterodyne comb signal with reduced tooth linewidths by orders of magnitude is recorded.
Yu Ma   +14 more
wiley   +1 more source

A Force Myography (FMG) Armband Based on Micro‐Structured Textile‐Pressure Sensors for Human‐Machine Interface (HMI)

open access: yesAdvanced Sensor Research, EarlyView.
This study introduces a textile‐based capacitive pressure sensor featuring a triangular prism microstructure, which significantly enhances sensitivity to 5.52% kPa−¹ and supports a wide sensing range up to 330 kPa. The sensor's performance is validated in a 4‐channel capacitive pressure‐based force myography (cFMG) armband for gesture recognition ...
Rayane Tchantchane   +3 more
wiley   +1 more source

Multimodal Locomotion: Next Generation Aerial–Terrestrial Mobile Robotics

open access: yesAdvanced Intelligent Systems, EarlyView., 2023
Aerial–terrestrial robots can achieve efficient energy consumption and robust environmental interaction by adding morphological features, adapting forms for locomotion transitions, and integrating multiple platforms. This next generation of mobile robots advances real‐world robotic deployment for operations with complex tasks and tackle environments ...
Jane Pauline Ramirez, Salua Hamaza
wiley   +1 more source

Mechanochemistry: Fundamental Principles and Applications

open access: yesAdvanced Science, EarlyView.
In this review, the physicochemical principles of mechanochemistry are first clarified. Based on this foundation, the research basis and cutting‐edge scientific achievements in four areas are introduced: solid‐state organic chemistry, polymers, interface science, and biomechanochemistry.
Liang Dong   +4 more
wiley   +1 more source

Microbiota‐Derived Inosine Suppresses Systemic Autoimmunity via Restriction of B Cell Differentiation and Migration

open access: yesAdvanced Science, EarlyView.
Lactobacillus johnsonii and its associated purine metabolite inosine not only restrict systemic B cell differentiation, but also contribute to immune cell infiltration in the kidneys, thereby serving dual functions in mitigating the progression of systemic lupus erythematosus (SLE).
Lingyu Gao   +15 more
wiley   +1 more source

Epileptiform Activity and Seizure Risk Follow Long‐Term Non‐Linear Attractor Dynamics

open access: yesAdvanced Science, EarlyView.
This study leverages the HAVOK framework to model long‐term, nonlinear attractor dynamics underlying epileptiform activity and seizure risk in epilepsy patients. By identifying key forcing mechanisms driving chaotic transitions, the findings improve seizure risk forecasting over multi‐day cycles and provide a pathway for personalized, data‐driven ...
Richard E Rosch   +4 more
wiley   +1 more source

Polarized Color Filters Using Colloidal Quantum Rod Nanocrystals for Advanced High‐Performance Displays

open access: yesAdvanced Science, EarlyView.
This groundbreaking research has advanced the utilization of quantum rods (QRs) for the emission of linearly polarized light, resulting in exceptional color saturation and enhanced display efficiency. The developed filter demonstrates a polarization degree of up to 0.67 and an impressive ambient contrast ratio (ACR) of 263:1, setting the stage for ...
Jianxin Song   +12 more
wiley   +1 more source

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