Publications related to Phase-contrast imaging

3D printed large amplitude torsional microactuators powered by ultrasound

Mahmut Selman Sakar, Mehdi Ali Gadiri, Junsun Hwang, Amit Yedidia Dolev

Here, we introduce a design, fabrication, and control methodology for large amplitude torsional microactuators powered by ultrasound. The microactuators are 3D printed from two polymers with drastically different elastic moduli as a monolithic compliant me ...

2024

Subwavelength imaging using a solid-immersion diffractive optical processor

Demetri Psaltis, Carlo Gigli, Niyazi Ulas Dinç, Yang Li

Phase imaging is widely used in biomedical imaging, sensing, and material characterization, among other fields. However, direct imaging of phase objects with subwavelength resolution remains a challenge. Here, we demonstrate subwavelength imaging of phase ...

Springernature2024

Fluorescence microscopy: A statistics-optics perspective

Aleksandra Radenovic

Fundamental properties of light unavoidably impose features on images collected using fluorescence microscopes. Accounting for these features is often critical in quantitatively interpreting microscopy images, especially those gathering information at scal ...

Amer Physical Soc2024

Ghost imaging using two SPAD array detectors: a parameter study towards the realization of a 3D quantum microscope

Edoardo Charbon, Claudio Bruschini, Paul Mos, Yang Lin

Quantum ghost imaging can be an important tool in making optical measurements. One of the most useful aspects of ghost imaging is the unique ability to correlate two sets of independently collected information. We aim to use the principles of ghost imaging ...

Spie-Int Soc Optical Engineering2024

Transportation-based functional ANOVA and PCA for covariance operators

Victor Panaretos, Yoav Zemel, Valentina Masarotto

We consider the problem of comparing several samples of stochastic processes with respect to their second-order structure, and describing the main modes of variation in this second order structure, if present. These tasks can be seen as an Analysis of Vari ...

Inst Mathematical Statistics-Ims2024

An adaptive phase field approach to 3D internal crack growth in rocks

Alexandra Roma Larisa Kushnir, Tao Xu, Michael Heap

Modeling the 3D internal crack under compression entails complex fracture mechanics (mode I-II-III fracture), resulting in substantial computational costs and challenges in characterizing fracture morphology characterization for Phase Field Method (PFM) si ...

2024

A synthetic phase-contrast imaging diagnostic with spatial filtering for gyrokinetic simulations

Stefano Coda, Stephan Brunner, Justin Richard Ball, Gabriele Merlo, Aylwin Iantchenko

A Phase-contrast imaging (PCI) diagnostic provides measurements of line-integrated electron density fluctuations. Localisation along the laser beam path can be achieved with a spatial filter that selects the wave-vector directions of the fluctuations contr ...

IOP Publishing Ltd2023

Controlled Surface Modification to Revive Shallow NV- Centers

Klaus Kern, Aparajita Singha, Dinesh Kevin Mathais Pinto

Near-surface negatively charged nitrogen vacancy (NV) centers hold excellent promise for nanoscale magnetic imaging and quantum sensing. However, they often experience charge-state instabilities, leading to strongly reduced fluorescence and NV coherence ti ...

2023

An optimal preconditioned FFT-accelerated finite element solver for homogenization

Till Junge, Ali Falsafi, Martin Ladecký

We generalize and provide a linear algebra-based perspective on a finite element (FE) ho-mogenization scheme, pioneered by Schneider et al. (2017)[1] and Leuschner and Fritzen (2018)[2]. The efficiency of the scheme is based on a preconditioned, well-scale ...

ELSEVIER SCIENCE INC2023

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Phase-contrast imaging

3D printed large amplitude torsional microactuators powered by ultrasound

Subwavelength imaging using a solid-immersion diffractive optical processor

Tangentially viewing phase contrast imaging for turbulence measurements in toroidal fusion devices

Fluorescence microscopy: A statistics-optics perspective

Ghost imaging using two SPAD array detectors: a parameter study towards the realization of a 3D quantum microscope

Transportation-based functional ANOVA and PCA for covariance operators

An adaptive phase field approach to 3D internal crack growth in rocks

A synthetic phase-contrast imaging diagnostic with spatial filtering for gyrokinetic simulations

Controlled Surface Modification to Revive Shallow NV- Centers

An optimal preconditioned FFT-accelerated finite element solver for homogenization

Graph Chatbot

Chat with Graph Search

3D printed large amplitude torsional microactuators powered by ultrasound

Ghost imaging using two SPAD array detectors: a parameter study towards the realization of a 3D quantum microscope

Subwavelength imaging using a solid-immersion diffractive optical processor

Tangentially viewing phase contrast imaging for turbulence measurements in toroidal fusion devices

Fluorescence microscopy: A statistics-optics perspective

Transportation-based functional ANOVA and PCA for covariance operators

An adaptive phase field approach to 3D internal crack growth in rocks

Controlled Surface Modification to Revive Shallow NV- Centers

A synthetic phase-contrast imaging diagnostic with spatial filtering for gyrokinetic simulations

An optimal preconditioned FFT-accelerated finite element solver for homogenization