Academic Articles & Research Papers

Illumination systems in vitreoretinal surgery: a comparative review of safety and efficacy.

Scleral buckling under a slit-lamp illumination system in patients with primary rhegmatogenous retinal detachment.

Subsecond optically controlled domain switching in freestanding ferroelectric BaTiO3 membrane

Abstract The quest to develop energy-efficient and fast optoelectronic control of memory devices is essential. In this respect, ferroelectric materials are gaining tremendous importance in information and communication technology. Here, we ...

Fast Timing Techniques in FLIM Applications

Fluorescence lifetime imaging (FLIM) is increasingly used in many scientific disciplines, including biological and medical research, materials science and chemistry. The fluorescence label is not only used to indicate its location, but also...

Development of a New 24-bit High-Performance Chipless RFID Tag for Accurate Identification in IoT Systems

Chipless RFID has the potential to bring in a paradigm change in industrial applications, notably in the world of the Internet of Things (IoT). This wireless technology permits distant identification, sensing, and tracking, giving tremendou...

Photosynthetic Research in Plant Science

Photosynthesis is a highly regulated, multistep process. It encompasses the harvest of solar energy, transfer of excitation energy, energy conversion, electron transfer from water to NADP+, ATP generation and a series of enzymatic reactions...

The Application of Electrospun Titania Nanofibers in Dye-sensitized Solar Cells

Titania nanofibers were fabricated using the industrial NanospiderTM technology. The preparative protocol was optimized by screening various precursor materials to get pure anatase nanofibers. Composite films were prepared by mixing a comme...

Effet de l'illumination proche infra-rouge intracérébrale chez des primates MPTP

La maladie de Parkinson (MP) est une maladie neurodégénérative chronique affectant le système dopaminergique et se traduisant par une perte des neurones dopaminergiques (DA) de la substance noire compacta (SNc) et des faisceaux nigro-striés...

Imaging with Diffractive Axicons Rapidly Milled on Sapphire by Femtosecond Laser Ablation

We show that single-pulse burst fabrication will produce a flatter and smoother profile of axicons milled on sapphire compared to pulse overlapped fabrication which results in a damaged and much rougher surface. The fabrication of large-are...

Overcoming the sensitivity–speed trade-off in two-dimensional photodetectors via a functional oxide interlayer

Abstract Photodetectors that can achieve both high sensitivity and fast speed remain a challenge due to inherent trade-offs, particularly limiting in photonic integrated circuits. While substantial progress has been made in broadening spect...

Recognition of Faces in Unconstrained Environments: A Comparative Study

The aim of this work is to carry out a comparative study of face recognition methods that are suitable to work in unconstrained environments. The analyzed methods are selected by considering their performance in former comparative studies, ...

Carrier-independent deep optical watermarking algorithm

With the development of multimedia techniques, the demand for copyright protection of digital products has also gradually risen.Digital watermarking is an effective means to protect the copyright of digital products.It is generally made by ...

Melanopsin and Cone Photoreceptor Inputs to the Afferent Pupil Light Response

Background: Retinal photoreceptors provide the main stage in the mammalian eye for regulating the retinal illumination through changes in pupil diameter, with a small population of melanopsin-expressing intrinsically photosensitive retinal ...

E2ETrADS: end-to-end transformer based autonomous driving system for adverse weather conditions

Abstract Adverse weather conditions, such as snow, heavy rain, fog, or limited illumination, pose significant challenges for autonomous vehicles (AVs) by degrading sensor reliability. This paper introduces E2ETrADS, an end-to-end transforme...

Monolithic UV‐Laser Programming of Photothermally Meta‐Morphing SMA Structures: Dual‐Encoded Kirigami Mechanics and Photonic Absorbance

ABSTRACT Photothermal shape memory alloys (SMAs) offer a promising pathway toward wireless soft robotic systems, yet their practical implementation remains limited by reliance on heterogeneous coatings and multistep processing to achieve su...

Trichromatic π-Pulse for Ultrafast Total Inversion of a Four-Level Ladder System

We present a numerical solution for complete population inversion in a four-level ladder system obtained by using a full π-pulse illumination scheme with resonant ultrashort phase-locked Gaussian laser pulses. We find that a set of pulse ar...

Tunable Piezophotonic Effect on Core-Shell Nanoparticles Prepared by Laser Ablation in Liquids under External Voltage

We report an experimental study on the piezophotonic effect of gold and lead zirconate titanate (PbZrTiO3) nanoparticles (NPs) and also their core-shell nanostructures prepared by the laser ablation in liquid method. To obtain these NPs and...

Oblique Back-Illumination Microscopy Enables Phase-Gradient Optical Sensing of Malaria-Induced Intracellular Heterogeneity.

Displacement and Illumination Levels Effect on Short-distance Measurement Errors of Using a Camera

Using a camera for measurement reading is simplified through the incorporation of computer vision application. The variations in the environment’s setting, however, may constitute to the occurrence of measurement errors. A study investigate...

Mobile system for road sign detection and recognition with template matching

This paper explores the effective approach to road sign detection and recognition based on mobile devices. Detecting and recognising road signs is a challenging matter because of different shapes, complex background and irregular sign illum...