Results 131 to 140 of about 301,445 (291)

Context-Aware Vision Language Foundation Models for Ocular Disease Screening in Retinal Images [PDF]

arXiv
Foundation models are large-scale versatile systems trained on vast quantities of diverse data to learn generalizable representations. Their adaptability with minimal fine-tuning makes them particularly promising for medical imaging, where data variability and domain shifts are major challenges.
arxiv  

Topology and Intersection-Union Constrained Loss Function for Multi-Region Anatomical Segmentation in Ocular Images [PDF]

arXiv
Ocular Myasthenia Gravis (OMG) is a rare and challenging disease to detect in its early stages, but symptoms often first appear in the eye muscles, such as drooping eyelids and double vision. Ocular images can be used for early diagnosis by segmenting different regions, such as the sclera, iris, and pupil, which allows for the calculation of area ...
arxiv  

How to Achieve High Spatial Resolution in Organic Optobioelectronic Devices?

Advanced Materials Interfaces, EarlyView.
This study explores how the optoelectronic properties of organic semiconductors impact on the resolution of light‐activated bioelectronic interfaces. Using photovoltage and photocurrent microscopy techniques, the authors show that H2PC/PTCDI heterojunctions enable a resolution down to 6.5 µm due to low carrier mobility along the heterojunction.
Luca Fabbri, Ludovico Migliaccio, Aleksandra Širvinskytė, Giacomo Rizzi, Luca Bondi, Cristiano Tamarozzi, Stefan A.L. Weber, Beatrice Fraboni, Eric Daniel Glowacki, Tobias Cramer   +9 more
wiley   +1 more source

Pump‐Probe Imaging of Ultrafast Laser Percussion Drilling of Glass in Single Pulse, MHz‐ and GHz‐Burst Regimes

Advanced Materials Interfaces, EarlyView.
Pump‐probe shadowgraphy of glass drilling is shown with a femtosecond laser operating in MHz‐ and GHz‐burst regime. A comparison with standard femtosecond micro‐processing using repetitive single pulses is provided. The ablation plume lifetime is measured in all three regimes, and the drilling dynamics of Through Glass Via (TGV) in GHz‐burst mode are ...
Pierre Balage, Théo Guilberteau, Manon Lafargue, Guillaume Bonamis, Clemens Hönninger, John Lopez, Inka Manek‐Hönninger   +6 more
wiley   +1 more source

Wide‐Field Bond Quality Evaluation Using Frequency Domain Thermoreflectance with Deep Neural Network Feature Reconstruction

Advanced Materials Interfaces, EarlyView.
In this work, wide‐field (>1 mm2) frequency‐domain thermoreflectance (FDTR) hyperspectral imaging is used to image subsurface indium bump bonds 50 µm below the surface. Thermal analysis with Monte Carlo uncertainty propagation is used to evaluate bump quality, while a trained deep neural network (can rapidly reconstruct bump geometry contact area maps.
Amun Jarzembski, Siddharth Nair, Wyatt Hodges, Matthew Jordan, Anthony McDonald, Logan Antiporda, Greg W. Pickrell, Timothy Walsh, Fabio Semperlotti, Jason Neely, Luke Yates   +10 more
wiley   +1 more source

Magnetoelastic Sensing: A Study of Flexible Magnetoelastic Strain Sensors for Highly Deformed Posture Perception

Advanced Materials Technologies, EarlyView.
This study proposes a magnetoelastic strain sensor for highly deformed posture perception. The sensor can maintain stable sensing signal output under significant strain (200%) and at varying stretch rates (ranging from 1000 to 8000 mm min−1). The sensor design is simple and can be applied to soft robots and wearable devices.
Jing Shu, Junming Wang, Yujie Su, Minghao Liu, Yehui Li, Hsuan‐Yu Lu, Md Masruck Alam, Chun‐Hang Eden Ti, Shuk Fan Tong, Zhaoli Gao, Zhao Guo, Zheng Li, Raymond Kai‐yu Tong   +12 more
wiley   +1 more source

Pushing the limit: Globe salvage of Group D retinoblastoma with severe vitreous seeding with intra-arterial chemotherapy and 15 cycles of intravitreal chemotherapy

American Journal of Ophthalmology Case Reports
Purpose: To report the successful treatment of persistent retinoblastoma vitreous seeding with 6 cycles of intra-arterial chemotherapy and 15 cycles of intravitreal chemotherapy injections.
Eugenia C. Greig, Roxanna Rabiee, Armin R. Afshar   +2 more
doaj  

Wearable Electrohydraulic Actuation For Salient Full‐Fingertip Haptic Feedback

Advanced Materials Technologies, EarlyView.
This study introduces a wearable soft robotic system that combines a flat and conformable electrohydraulic pump, a mechanically transparent channel, and an ultra‐thin fingertip chamber to provide salient haptic feedback that imitates natural touch experiences.
Yitian Shao, Alona Shagan Shomron, Bernard Javot, Christoph Keplinger, Katherine J. Kuchenbecker   +4 more
wiley   +1 more source

Beyond 3D: Smart Material Systems for Microscale 4D Printing

Advanced Materials Technologies, EarlyView.
Smart materials exhibit shape changes in response to their environment, enabling scientists to go beyond 3D in the rapidly growing field of 4D printing. This review covers recent advances, current challenges, and emerging trends in 4D printing on the microscale.
Daniel Maher, Marcin Piekarczyk, Babak Rezaei, Ada‐Ioana Bunea   +3 more
wiley   +1 more source

Integrated Ovonic Threshold Switching Selector and Resistive Switching Memory 1S1R in Electrodeposited ZnTe Thin Films

Advanced Materials Technologies, EarlyView.
This study showcases the first‐ever demonstration of ovonic threshold switching (OTS) and resistive switching (RS) in ZnTe thin films fabricated via a fast, cost‐effective electrodeposition method. By controlling the deposition potential, ZnTe film is tuned to demonstrate OTS or RS behaviors, enabling the implementation of one‐selector‐one‐resistor ...
Ayoub H. Jaafar, Haytham Hussein, Tongjun Zhang, Nikolay Zhelev, Neil T. Kemp, Gillian Reid, Kees de Groot, Philip N. Bartlett, Ruomeng Huang   +8 more
wiley   +1 more source