Article
Clinical Neurology
Joaquin M. Alfei, Hernan De Gruy, Dimitri De Bundel, Laura Luyten, Tom Beckers
Summary: Memories remain dynamic after consolidation, and when reactivated, they can be vulnerable to pharmacological agents inducing amnesia. Through experiments, it was found that drug-induced postreactivation amnesia can occur when memories are reactivated through exposure to a generalization stimulus.
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY
(2021)
Article
Physics, Applied
Junjun Xue, Wei Chen, Tao Tao, Ting Zhi, Pengfei Shao, Qing Cai, Guofeng Yang, Jin Wang, Dunjun Chen, Rong Zhang
Summary: A novel structure of CrN/GaN/CrN van der Waals heterostructure is proposed and its stability and magnetic stability are verified through calculations. The study analyzes the transport characteristics and spin polarizability of electrons in the structure, demonstrating a significant spin valve effect.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Ceramics
Volodymyr Kryshenik
Summary: Metastable and transient photoinduced phenomena in as-deposited amorphous AsxS100-x films were investigated using a waveguide technique. The dynamics of the sub-bandgap mode absorption and the irreversible changes and transient variation of the film refractive index were studied. The findings suggest that these phenomena are influenced by two competing processes and are primarily caused by changes in interatomic bond strength and polarizability near sulphur atoms.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Engineering, Electrical & Electronic
Stefanos Kovaios, Apostolos Tsakyridis, George Giamougiannis, Konstantinos Fotiadis, Davide Sacchetto, Michael Zervas, Miltiadis Moralis-Pegios, Nikos Pleros
Summary: This paper presents the experimental performance of 3 x 3 and 4 x 4 Generalized Mach Zehnder Interferometers (GMZI) integrated on the Si3N4 waveguide platform, serving as switching and variable power splitting modules. The GMZI structures exhibit resonant spectral behavior and low insertion losses.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Chen Chen, Xin Zhong, Shu Fu, Xin Jian, Min Liu, Helin Yang, Arokiaswami Alphones, H. Y. Fu
Summary: This paper proposes four OFDM-based generalized optical MIMO techniques for OWC systems, performing spatial mapping in frequency and time domains. ML detection algorithms are designed to efficiently estimate spatial and constellation symbols, and simulation results demonstrate the existence of an optimal GO-MIMO technique for achieving target spectral efficiency in a specific indoor environment.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Mahima Chaudhary, Chenghao Xin, Zhelu Hu, Dongjiu Zhang, Guillaume Radtke, Xiangzhen Xu, Laurent Billot, Charlotte Tripon-Canseliet, Zhuoying Chen
Summary: The development of FET-based non-volatile optoelectronic memories is crucial for improving computer systems. This study demonstrates the use of solution-processed colloidal nitrogen-doped carbon quantum dots to achieve functional optoelectronic memories programmable by UV illumination. The memory can be erased by a positive gate bias.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Minkyung Kim, Dasol Lee, Yeseul Kim, Junsuk Rho
Summary: In this study, an explicit analytic formula for the spin Hall shift under arbitrarily polarized incidence is derived, and it is demonstrated that the spin Hall shift can be enhanced by using polarization degree of freedom. This analytic formula helps us understand the spin Hall effect under general polarization and achieve unprecedented modulation.
Article
Polymer Science
Matija Lovsin, Dominik Brandl, Gasper Glavan, Inna A. Belyaeva, Luka Cmok, Lucija Coga, Mitjan Kalin, Mikhail Shamonin, Irena Drevensek-Olenik
Summary: A surface relief grating with a period of 30 μm is embossed onto the surface of magnetoactive elastomer (MAE) samples in the presence of a moderate magnetic field. The diffraction of the grating can be detected via a laser beam, and the diffraction efficiency depends on the applied magnetic field. The effect is more prominent in MAE samples with a higher content of iron filler.
Review
Chemistry, Multidisciplinary
Gaurav Vats, Brett Hodges, Andrew J. Ferguson, Lance M. Wheeler, Jeffrey L. Blackburn
Summary: Metal halide perovskite based materials have gained attention as remarkable solution-processable optoelectronic materials with intriguing properties and potential applications. They are being considered for low-energy memory and information processing applications. Recent progress in using photons as a critical degree of freedom for switching, memory, and neuromorphic functionality in metal halide perovskite materials and devices is reviewed.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Honglin Ji, Shuangyu Dong, Zhaopeng Xu, Jingchi Li, Ranjith Rajasekharan Unnithan, Yikai Su, William Shieh
Summary: Coherent detection offers optical field recovery for channel impairment compensation and advanced modulation formats, while direct detection is more cost-effective. A simplified CADD scheme is proposed to combine the advantages of both methods, with SSBI iterative mitigation algorithms introduced.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
Denis Kleyko, Geethan Karunaratne, Jan M. Rabaey, Abu Sebastian, Abbas Rahimi
Summary: Memory-augmented neural networks enhance performance by incorporating an external key-value memory, where the complexity is determined by the number of support vectors. We propose a generalized key-value memory that allows for flexible control of the tradeoff between robustness and resource consumption. This is particularly useful for in-memory computing hardware which utilizes nonvolatile memory devices for efficient storage and computation, effectively mitigating nonidealities without the need for neural network retraining.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2023)
Article
Optics
Lin Wu, Liu Ye, Dong Wang
Summary: This research optimizes uncertainty relations by proposing a tighter lower bound and generalizing it to multipartite systems. Experimental results demonstrate that the new bound outperforms the previous one. These findings are significant for the security of quantum key distribution protocols and quantum precision measurements.
Article
Physics, Multidisciplinary
Sina Mirzaiee, Mina Noori, Hamed Baghban, Hadi Veladi
Summary: A design scheme for photonic-crystal-based all-optical memory utilizing the Kerr effect and slow light phenomenon has been proposed. The study involves adjusting the dimensions of the photonic crystal slab to provide proper functionality and requires specific peak power and time duration for the read and write processes.
Article
Engineering, Electrical & Electronic
Yang Yang, Congcong Wang, Chunyan Feng, Caili Guo, Julian Cheng, Zhimin Zeng
Summary: The proposed novel dimming control scheme, termed as Generalized Dimming Control (GDC), aims to enhance communication performance in visible light communication systems by adaptively exploiting time, spatial, and signal domain resources under practical illumination constraints. Several low-complexity GDC schemes are introduced to address the high search complexity of the optimal activation pattern scheme, providing significant SNR gains compared to conventional dimming control schemes.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Christos Pappas, Theodoros Moschos, Theonitsa Alexoudi, Christos Vagionas, Nikos Pleros
Summary: Over the past few years, there has been a research effort to deploy optical memory circuitry to overcome the limitations of electronic random-access memory (RAM) in terms of access time and memory bandwidth. However, most demonstrations of optical memory elements in functional optical RAMs have only achieved single-bit capacity levels, and multi-bit demonstrations have lacked true random-access capabilities. In this article, we present an experimental 16-bit all-optical RAM bank prototype that can store four 4-bit WDM-formatted optical data words with a memory-throughput of 20 Gb/s. The proposed architecture includes passive row/column decoding subsystems, access gates for each word line, and all-optical flip-flops arranged in a 4 x 4 RAM bank. The experimental validation showed error-free operation in write mode, indicating the potential for two-dimensional addressable RAM banks in the optical computing application domain.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Lyubov Amitonova, Tristan B. H. Tentrup, Ivo M. Vellekoop, Pepijn W. H. Pinkse
Article
Optics
Abhilash Thendiyammal, Gerwin Osnabrugge, Tom Knop, Ivo M. Vellekoop
Article
Optics
Ioannis N. Papadopoulos, Jean-Sebastien Jouhanneau, Naoya Takahashi, David Kaplan, Matthew Larkum, James Poulet, Benjamin Judkewitz
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Xuebing Zhang, Zizheng Cao, Juhao Li, Dawei Ge, Zhangyuan Chen, Ivo M. Vellekoop, A. M. J. Koonen
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2020)
Article
Optics
Gerwin Osnabrugge, Maaike Benedictus, Ivo M. Vellekoop
Summary: The modified Born series method is efficient for simulating light scattering in large inhomogeneous media. New boundary conditions combining padding-free acyclic convolution with an ultra-thin boundary layer minimize wrap-around and reflection artifacts while reducing computational costs and memory requirements.
Article
Optics
Bahareh Mastiani, Ivo M. Vellekoop
Summary: Light scattering poses a major limitation for optical imaging, but can be overcome through wavefront shaping. A new 'dual reference' algorithm has been developed to optimally utilize available light and enable multi-target wavefront shaping, with experimental validation showing improved focus intensity compared to existing methods.
Correction
Optics
Zizheng Cao, Xuebing Zhang, Gerwin Osnabrugge, Juhao Li, Ivo M. Vellekoop, Antonius M. J. Koonen
LIGHT-SCIENCE & APPLICATIONS
(2021)
Correction
Engineering, Electrical & Electronic
Xuebing Zhang, Zizheng Cao, Juhao Li, Dawei Ge, Zhangyuan Chen, Ivo M. Vellekoop, Antonius M. J. Koonen
Summary: Professor Nabeel A. Riza's laboratory theoretically proposed an NLOS indoor optical wireless communications arrangement with diffuse reflections from diffuse optical elements. Our proposed CAO-Tx can focus reflections onto the receiver rather than scatter them in all directions, which would greatly benefit this type of arrangement. We apologize for omitting this prior art.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Caroline Berlage, Malinda L. S. Tantirigama, Mathias Babot, Diego Di Battista, Clarissa Whitmire, Ioannis N. Papadopoulos, James F. A. Poulet, Matthew Larkum, Benjamin Judkewitz
Summary: The scattering compensation technique based on three-photon excitation introduced in this paper converges faster and works reliably even on densely labeled samples compared to two-photon techniques, showing great potential for biomedical imaging applications.
Article
Cell Biology
Gokul Rajan, Julie Lafaye, Giulia Faini, Martin Carbo-Tano, Karine Duroure, Dimitrii Tanese, Thomas Panier, Raphael Candelier, Jorg Henninger, Ralf Britz, Benjamin Judkewitz, Christoph Gebhardt, Valentina Emiliani, Georges Debregeas, Claire Wyart, Filippo Del Bene
Summary: This study investigates the evolutionary divergence of locomotion and its adaptation to environmental constraints by comparing swimming patterns in closely related species with similar neuronal circuitry. The findings reveal that mesencephalic locomotion maintenance neurons and the availability of dissolved oxygen and timing of swim bladder inflation may drive the differences in swimming pattern.
Article
Optics
Sylvain Gigan, Ori Katz, Hilton B. de Aguiar, Esben Ravn Andresen, Alexandre Aubry, Jacopo Bertolotti, Emmanuel Bossy, Dorian Bouchet, Joshua Brake, Sophie Brasselet, Yaron Bromberg, Hui Cao, Thomas Chaigne, Zhongtao Cheng, Wonshik Choi, Tomas Cizmar, Meng Cui, Vincent R. Curtis, Hugo Defienne, Matthias Hofer, Ryoichi Horisaki, Roarke Horstmeyer, Na Ji, Aaron K. LaViolette, Jerome Mertz, Christophe Moser, Allard P. Mosk, Nicolas C. Pegard, Rafael Piestun, Sebastien Popoff, David B. Phillips, Demetri Psaltis, Babak Rahmani, Herve Rigneault, Stefan Rotter, Lei Tian, Ivo M. Vellekoop, Laura Waller, Lihong Wang, Timothy Weber, Sheng Xiao, Chris Xu, Alexey Yamilov, Changhuei Yang, Hasan Yilmaz
Summary: In the last decade, various tools such as wavefront shaping and computational methods have been developed to understand and control the propagation of light in complex mediums. This field has revolutionized the possibility of diffraction-limited imaging at depth in tissues, and a vibrant community is actively working on it.
JOURNAL OF PHYSICS-PHOTONICS
(2022)
Article
Optics
Baharesh Mastiani, Gerwin Osnabrugge, Ivo M. Vellekoop
Summary: This study combines the advantages of adaptive optics (AO) and wavefront shaping (WFS) to propose a new WFS method that takes into account the smoothness of the required correction. The method is numerically stable, robust against noise, and capable of finding corrections for multiple targets simultaneously.
Review
Biochemical Research Methods
Qinrong Zhang, Qi Hu, Caroline Berlage, Peter Kner, Benjamin Judkewitz, Martin Booth, Na Ji
Summary: Optical microscopy is widely used, but its performance for bioimaging is often affected by sample-induced aberrations. Recently, adaptive optics (AO) techniques have been applied to microscopy, allowing high-resolution imaging of biological structures in complex tissues. This review discusses classic and recently developed AO techniques and their applications in optical microscopy.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Instruments & Instrumentation
Dwi L. Priwitaningrum, Kunal Pednekar, Alexandros V. Gabriel, Aida A. Varela-Moreira, Severine Le Gac, Ivo Vellekoop, Gert Storm, Wim E. Hennink, Jai Prakash
Summary: In this study, the effect of nano-chemotherapeutics on tumor stroma was evaluated using a tumor stroma-mimicking 3D in vitro model. The results showed that polymeric nanoparticles could penetrate the tumor stroma and induce cytotoxicity in tumor cells, but the efficacy was limited in the 3D model. This tumor stroma-mimicking 3D model can serve as an excellent platform for studying the penetration and effects of nanotherapeutics.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2023)
Proceedings Paper
Optics
Bahareh Mastiani, Ivo M. Vellekoop
Summary: By shaping the wavefront of incident light, light can be focused inside scattering objects, and a new algorithm of wavefront shaping has been proposed to improve tolerance to noise compared to existing feedback-based algorithms.
OPTICAL COHERENCE IMAGING TECHNIQUES AND IMAGING IN SCATTERING MEDIA IV
(2021)
