Results 61 to 70 of about 8,441 (216)

Polarization-insensitive achromatic metalens based on computational wavefront coding

Optics Express, 2021
Broadband achromatic metalens imaging is of great interest in various applications, such as integrated imaging and augmented/virtual reality display. Current methods of achromatic metalenses mainly rely on the compensation of a linear phase dispersion implemented with complex nanostructures.
Ti, Sun, Jingpei, Hu, Suodong, Ma, Feng, Xu, Chinhua, Wang   +4 more
openaire   +2 more sources

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

LFA: A Lattice Fourier Analyzer for Quantitative In Situ EC‐STM of Adsorbate–Substrate Superstructures

Advanced Materials Interfaces, EarlyView.
Although electrochemical scanning tunneling microscopy provides atomic‐scale access to electrified interfaces, quantitative in situ and operando investigations suffer from drift‐induced distortions. This work introduces the Lattice Fourier Analyzer (LFA), which employs substrate‐anchored affine drift correction in reciprocal space to recover precise ...
Rafał Lewandków, Paulina Wira, Anna Futyma, Radosław Wasielewski, Tomasz Kosmala   +4 more
wiley   +1 more source

All-dielectric coding metasurface designs for spin-selective beam shaping and multichannel optical vortex beam manipulation

Results in Physics
Enhancing the information-carrying capacity of incident light using multifunctional metasurfaces have attracted considerable interests due to its promising applications in high-secure information encryption and communication. Incorporating spin-dependent
Naeem Ullah, Ata Ur Rahman Khalid, Shahid Iqbal, Muhammad Imran, Muhammad Ismail Khan, Vijay Laxmi, Yibin Tian, Xiaoqing Tian   +7 more
doaj   +1 more source

Mapping of Physiological Signals From Wireless Battery‐Free Implants With Plane‐Wave Ultrasound Imaging

Advanced Materials Technologies, EarlyView.
Combined approach of electromagnetic (Power) and ultrasound (data harvesting) waves is proposed to address the miniaturized ultrasonic implants. Electromagnetic waves trigger the piezoelectric element to generate the acoustic pulse which is modulated by the variations in the sensor's impedance.
Anam Bhatti, Hugo Guillot, Ouafae Firdaouissi, Mohammed Irar, Lionel Rousseau, Clément Hébert, Maxime Lafond   +6 more
wiley   +1 more source

Decoupled illumination detection in light sheet microscopy for 4D observation of spermatozoa at high-resolutions [PDF]

EPJ Web of Conferences
We present the use of wavefront coding (WFC) combined with machine learning in a light sheet fluorescence microscopy (LSFM) system. We visualize the 3D dynamics of sperm flagellar motion at an imaging speed up to 80 volumes per second, which is faster ...
Licea-Rodriguez Jacob, Castro-Olvera Gustavo, Palillero-Sandoval Omar, Merino Gonzalo, Eriksen Martin, Beltrán-Vargas Roberto, Rocha-Mendoza Israel, Olarte Omar E., Loza-Alvarez Pablo   +8 more
doaj   +1 more source

Tbit/s line-rate satellite feeder links enabled by coherent modulation and full-adaptive optics

Light: Science & Applications, 2023
Free-space optical (FSO) communication technologies constitute a solution to cope with the bandwidth demand of future satellite-ground networks. They may overcome the RF bottleneck and attain data rates in the order of Tbit/s with only a handful of ...
Yannik Horst, Bertold Ian Bitachon, Laurenz Kulmer, Jannik Brun, Tobias Blatter, Jean-Marc Conan, Aurélie Montmerle-Bonnefois, Joseph Montri, Béatrice Sorrente, Caroline B. Lim, Nicolas Védrenne, Daniel Matter, Loann Pommarel, Benedikt Baeuerle, Juerg Leuthold   +14 more
doaj   +1 more source

TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications

Advanced Robotics Research, EarlyView.
TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince, Sheeraz Athar, Pokuang Zhou, Yu She   +3 more
wiley   +1 more source

Multispectral Extended Depth-of-Field Imaging via Stochastic Wavefront Optimization

IEEE Open Journal of Signal Processing
Extended depth-of-field (EDoF) is a desirable attribute for imaging systems where all features in the scene are in focus despite their relative distance.
Exequiel Oliva, Nelson Diaz, Samuel Pinilla, Esteban Vera   +3 more
doaj   +1 more source

Twisting Polarization‐Tunable Subdiffraction‐Limited Magnetization through Vectorial Beam Coupling

Advanced Photonics Research, 2022
All‐optical control of magnetization vectors is considered as a powerful solution that empowers the development of multifunctional integrated optomagnetic devices.
Xiaofei Liu, Weichao Yan, Yue Liang, Zhongquan Nie, Yuxiao Wang, Zehui Jiang, Yinglin Song, Xueru Zhang   +7 more
doaj   +1 more source