Results 61 to 70 of about 50,958 (240)

Exploiting Scattering‐Based Point Spread Functions for Snapshot 5D and Modality‐Switchable Lensless Imaging

Laser &Photonics Reviews, EarlyView.
This paper demonstrates a snapshot 5D and modality‐switchable lensless camera (Diffuser‐mCam), which can encode 2D intensity, multi‐spectral, polarization, and time information into a monochromatic raw data, and subsequently decode it using the compressed sensing algorithm at the sampling rate of 2.5% per channel.
Ze Zheng, Baolei Liu, Jiaqi Song, Muchen Zhu, Chi Han, Yao Wang, Menghan Tian, Ying Xiong, Zhaohua Yang, Xiaolan Zhong, David McGloin, Fan Wang   +11 more
wiley   +1 more source

Quantitative characterization of the x-ray imaging capability of rotating modulation collimators with laser light [PDF]

, 1996
We developed a method for making quantitative characterizations of bi-grid rotating modulation collimators (RMC ’s) that are used in a Fourier transform x-ray imager.
Crannell, C. J., Dennis, B. R., Gaither III, C. C., III, Hartman, C. N., Hurford, G. J., Lang, F. L., Orwig, L. E., Schmahl, E. J.   +7 more
core  

X-ray luminescence computed tomography using a focused X-ray beam

, 2017
Due to the low X-ray photon utilization efficiency and low measurement sensitivity of the electron multiplying charge coupled device (EMCCD) camera setup, the collimator based narrow beam X-ray luminescence computed tomography (XLCT) usually requires a ...
Li, Changqing, Lun, Michael C, Nguyen, Alex Anh-Tu, Zhang, Wei   +3 more
core   +2 more sources

Comparison of pinhole collimation and focusing optics for SANS [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015
Abstract We examine quantitatively the instrumental factors that affect the theoretical performance and practical application of conventional pinhole collimation and focusing optics for small-angle neutron scattering (SANS) measurements. We calculate the relative performance of pinhole collimation vis-a-vis focusing by grazing incidence elliptical ...
C.J. Glinka, J.G. Barker, D.F.R. Mildner
openaire   +1 more source

Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav, Benny Neumark, Oneg Elkabets, Alex Yakovchuk   +3 more
wiley   +1 more source

Augmenting camera images with gamma detector data

EJNMMI Physics, 2019
Background Squamous cell carcinoma in the head and neck region is one of the most widespread cancers with high morbidity. Classic treatment comprises the complete removal of the lymphatics together with the cancerous tissue.
Peter A. von Niederhäusern, Simon Pezold, Uri Nahum, Carlo Seppi, Guillaume Nicolas, Michael Rissi, Stephan K. Haerle, Philippe C. Cattin   +7 more
doaj   +1 more source

A new apparatus for deep patterning of beam sensitive targets by means of high-energy ion beam [PDF]

, 2005
The paper reports on a high precision equipment designed to modify over 3-dimensions (3D) by means of high-energy gold ions the local properties of thin and thick films.
A. Amato, A. Chiodoni, A. Rovelli, B. Minetti, Bell, Brandt, Civale, D. Botta, E. Mezzetti, F. Laviano, G. Ghigo, Ghigo, Gurevich, Hardy, Hensel, Jooss, Koblischka, Konczykowski, Krusin-Elbaum, Kwok, L. Gozzelino, Laviano, Laviano, Mezzetti, Mezzetti, Polyanskii, Prellier, R. Gerbaldo, Reyntjens, Studer, Vlasko-Vlasov, Yan, Zhu, Ziegler   +33 more
core   +1 more source

Anisotropy Analysis of Bamboo and Tooth Using 4‐Angle Polarization Micro‐Spectroscopy

Nano Select, EarlyView.
Super‐resolution via orientation: spatial distribution of specific molecular vibrations are revealed at 1/20 of the diffraction limit. ABSTRACT To investigate the anisotropic properties of biomaterials, two distinct classes are considered as follows: polymer‐based (cellulose in plants) and crystalline‐based (enamel in teeth), each demonstrating ...
Meguya Ryu, Hsin‐Hui Huang, Jitraporn Vongsvivut, Soon Hock Ng, Irma Dumbrytė, Donatas Narbutis, Mangirdas Malinauskas, Saulius Juodkazis, Junko Morikawa   +8 more
wiley   +1 more source

Characterizing the parallax error in multi-pinhole micro-SPECT reconstruction [PDF]

, 2011
The usage of pinholes is very important in preclinical micro-SPECT. Pinholes can magnify the object onto the detector, resulting in better system resolutions than the detector resolution.
De Beenhouwer, Jan, Staelens, Steven, Van Holen, Roel, Vandeghinste, Bert, Vandenberghe, Stefaan   +4 more
core   +2 more sources

On the Beam Characteristics of X‐Ray Bursts Observed in Rocket‐Triggered Lightning

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Employing the multi‐station Thunderstorm Energetic Radiation Observation System, we detected X‐ray bursts during two rocket‐triggered lightning events in 2024. By innovatively integrating optical imaging with three‐dimensional lightning channel reconstruction based on Distributed Acoustic Sensing (DAS), we analyzed the X‐ray emission ...
Yuan Wang, Peng Li, Yang Zhang, Heting Hong, Xiao Li, Yanfeng Fan, Baofeng Cao, Weiqun Xu, Zongxiang Li, Weitao Lyu, Gaopeng Lu, Xiong Zhang, Xiaoqiang Li   +12 more
wiley   +1 more source