Results 201 to 210 of about 38,080 (271)

What is “accuracy”? Rethinking machine learning classifier performance metrics for highly imbalanced, high variance, zero‐inflated species count data

Limnology and Oceanography: Methods, Volume 24, Issue 2, February 2026.
Abstract Machine learning has opened the door for the automated sorting (classification) of images, holograms and acoustic backscatters of individual plankton, invertebrates, fish and marine mammals. However, this field is complicated by decades of paradoxically promising reports of classifier performance that do not correlate with real‐world uptake of
Bianca M. Owen, James R. Tweedley, Navid R. Moheimani, Chris S. Hallett, Jeffrey J. Cosgrove, Leopold P. O. Silberstein   +5 more
wiley   +1 more source

Tunable metafibers: remote spatial focus control using 3D nanoprinted holograms on dual-core fibers. [PDF]

Light Sci Appl
Sun J, Huang W, Lorenz A, Zeisberger M, Schmidt MA.   +4 more
europepmc   +1 more source

Nearly 180° Field‐of‐View Metalens for Miniaturized Imaging Systems

Laser &Photonics Reviews, Volume 20, Issue 3, 5 February 2026.
A compact, single‐layer metalens is developed with an ultra‐wide field of view of ≈180 degrees. Utilizing a unique quadratic phase profile, this metalens overcomes traditional issues like axial and color dispersion. It operates across red, green, and blue wavelengths with non‐polarized light, promising enhanced imaging capabilities for integration into
Azhar Javed Satti, Eunji Lee, Isma Javed, Kyungtae Kim, Joohoon Kim, Muhammad Ashar Naveed, Muhammad Zubair, Qammer H. Abbasi, Muhammad Qasim Mehmood, Junsuk Rho   +9 more
wiley   +1 more source

Full-Space Three-Dimensional Holograms Enabled by a Reflection-Transmission Integrated Reconfigurable Metasurface. [PDF]

Nanomaterials (Basel)
Feng R, Yu Y, Wu D, Tan Q, Burokur SN.
europepmc   +1 more source

Inverse‐Designed On‐Chip Orbital Angular Momentum Mode Converter for Optical Convolution Acceleration

Nanophotonics, Volume 15, Issue 3, 12 February 2026.
This work proposes OAM‐encoded CNN based on cascaded on‐chip OAM converters and multiplexers. The footprint of inverse‐designed converters is 5 μm × 4 μm and the maximum conversion efficiency of OAM reaches 88%. The OAM‐encoded optical CNN was built using this device, achieving 98.0% accuracy on MNIST and 86.1% accuracy on Fashion‐MNIST classification.
Yumeng Chen, Kuo Zhang, Kun Liao, Xiaoyong Hu, Qihuang Gong   +4 more
wiley   +1 more source

Digital holographic microscopy for rapid bacteria segmentation and counting in microfluidic cartridges: basic considerations and limitations for diagnostic application. [PDF]

J Biomed Opt
Kamel H, Schmid J, Nizami MR, Alekseenko I, Hausladen F, Claus D, Wittig R, Kelly DP.   +7 more
europepmc   +1 more source

Spectroscopic Signatures of Structural Disorder and Electron‐Phonon Interactions in Trigonal Selenium Thin Films for Solar Energy Harvesting

Small Methods, Volume 10, Issue 3, 9 February 2026.
Selenium plays hard to get ‐ volatile, low radiative efficiency, and highly sensitive to processing. Using a closed‐space encapsulation strategy, we probe room‐temperature photoluminescence and quantify structural disorder, showing how precise structural control can turn selenium into a high‐performance optoelectronic material of tomorrow.
Rasmus S. Nielsen, Axel G. Medaille, Arnau Torrens, Oriol Segura‐Blanch, Seán R. Kavanagh, David O. Scanlon, Aron Walsh, Edgardo Saucedo, Marcel Placidi, Mirjana Dimitrievska   +9 more
wiley   +1 more source

Novel AI technology for 4D <i>in situ</i> tracking and physicochemical characterization of inorganic carbonaceous aerosols in air/water. [PDF]

RSC Adv
Nasreddine ZA, Pal D, Ariya PA.
europepmc   +1 more source

Imaging malaria parasites across scales and time

Journal of Microscopy, Volume 301, Issue 2, Page 122-150, February 2026.
Abstract The idea that disease is caused at the cellular level is so fundamental to us that we might forget the critical role microscopy played in generating and developing this insight. Visually identifying diseased or infected cells lays the foundation for any effort to curb human pathology.
Julien Guizetti
wiley   +1 more source