Results 91 to 100 of about 1,689,718 (367)
Thickness‐Dependent Skyrmion Evolution in Fe3GeTe2 During Magnetization Reversal
Advanced Functional Materials, EarlyView.Thickness‐ and field‐dependent magnetic domain behavior in 2D van der Waals Fe3GeTe2 is studied using Lorentz TEM and micromagnetic simulations. A patch‐like domain phase evolves from skyrmions during magnetization reversal, and step edges between thickness regions act as pinning sites.
Jennifer Garland +9 more
wiley +1 more source
Efficient Speckle Noise Filtering of SAR Images [PDF]
Journal of Astronomy and Space Sciences, 1998 Any classification process using SAR images presupposes the reduction of multiplicative speckle noise, since the variations caused by speckle make it extremely difficult to distinguish between neighboring classes within the feature space.
Byoungsoo Kim +2 more
doaj
Multi-frame speckle reduction in OCT using supercontinuum pumped by noise-like pulses [PDF]
Journal of Innovative Optical Health Sciences, 2019 In most coherent imaging modality, speckle noise is a major cause that blurs the boundary of tissues and degrades the image contrast. By utilizing the unique properties of supercontinuum (SC) generated by noise-like pulses (NLPs) and a simple multi-frame
Chengming Wang +10 more
doaj +1 more source
The Structure of High Strehl Ratio Point-Spread Functions
, 2003 We describe the symmetries present in the point-spread function (PSF) of an optical system either located in space or corrected by an adaptive o to Strehl ratios of about 70% and higher.
Anand Sivaramakrishnan +7 more
core +1 more source
Advanced Functional Materials, EarlyView.Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby +4 more
wiley +1 more source
IEEE Photonics Journal, 2015 We report on the implementation of a current drive modulation circuitry that is effective in suppressing speckle noise for laser diodes. The drive circuit allows for operating the laser diode current at constant dc or modulating the current with square ...
I. Yilmazlar, M. Sabuncu
doaj +1 more source
Advanced Functional Materials, EarlyView.The concept of foulant particle manipulation and detachment from active microfiltration membranes via voltage‐driven vibrations is introduced. Actuator components are initially integrated onto the filtration membranes using an airbrush spray printing technique.
Irem Gurbuz, Hanieh Bazyar, Andres Hunt
wiley +1 more source
A Comparison of Speckle Reduction Techniques in Medical Ultrasound Imaging
Applied Medical Informatics, 2015 Speckle noise is a multiplicative noise that degrades the visual evaluation in ultrasound imaging. In addition, it limits the efficient application of intelligent image processing algorithms, such as segmentation techniques. Thus, speckle noise reduction
Cristina STOLOJESCU-CRISAN
doaj
Advanced Functional Materials, EarlyView.An epi‐intraneural interface is developed through in silico optimization and a novel tridimensional microfabrication pipeline. The device integrates penetrating and epineural contacts on a flexible substrate. Mechanical, electrochemical, and in vivo testing in rat and pig reveal robust implantation, low‐threshold activation, and site‐dependent ...
Federico Ciotti +14 more
wiley +1 more source
Speckle noise in direct-detection lidar systems [PDF]
The speckle noise is evaluated from some typical lidar systems. The governing equations are summarized. The mutual intensity function of the speckle pattern is calculated in terms of the laser radiation modes.
Gardner, C. S., Mecherle, G. S.
core +1 more source