Results 31 to 40 of about 3,195,954 (330)

Mid-infrared single-pixel imaging at the single-photon level

open access: yesNature Communications, 2023
The authors present an implementation of mid-infrared single-photon computational imaging with a single-element silicon detector. In addition to unique features of single-pixel simplicity and room-temperature operation, the infrared imager offers a ...
Yinqi Wang   +5 more
doaj   +1 more source

Spectroscopy

open access: yesFusion Science and Technology, 2004
A brief introduction into the spectroscopy of fusion plasmas is presented. Basic principles of the emission of ionic, atomic and molecular radiation will be explained and a survey of the effects, which lead to the population of the respective excited levels, will be given.
openaire   +3 more sources

Planck Spectroscopy

open access: yesLaser & Photonics Reviews, 2021
AbstractAll spectrometers rely on some mechanism to achieve spectral selectivity; common examples include gratings, prisms, and interferometers with moving mirrors. A spectroscopic technique—here dubbed Planck spectroscopy—that measures the spectral emissivity of a surface using only a temperature‐controlled stage and a detector, without any wavelength‐
Yuzhe Xiao   +6 more
openaire   +2 more sources

Focus image scanning microscopy for sharp and gentle super-resolved microscopy

open access: yesNature Communications, 2022
Super-resolution microscopy techniques can be challenging for live cells and thick samples. Here, the authors propose a method to reduce beam intensity and remove out-of-focus fluorescence background in image-scanning microscopy (ISM) and its combination
Giorgio Tortarolo   +9 more
doaj   +1 more source

Complex Meson Spectroscopy

open access: yes, 2005
We do meson spectroscopy by studying the behavior of S-matrix poles in the complex-energy plane, as a function of the coupling strength for triplet-P-zero quark-pair creation.
Kleefeld, Frieder   +2 more
core   +1 more source

Open-charm meson spectroscopy [PDF]

open access: yes, 2006
We present a theoretical framework that accounts for the new $D_J$ and $D_{sJ}$ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional $P-$wave quark-antiquark states and four-quark ...
A. Valcarce   +5 more
core   +3 more sources

Unified picture of vibrational relaxation of OH stretch at the air/water interface

open access: yesNature Communications
The elucidation of the energy dissipation process is crucial for understanding various phenomena occurring in nature. Yet, the vibrational relaxation and its timescale at the water interface, where the hydrogen-bonding network is truncated, are not well ...
Woongmo Sung   +3 more
doaj   +1 more source

Single-shot imaging of surface molecular ionization in nanosystems

open access: yesNanophotonics, 2021
Using single-shot velocity map imaging technique, explosion imaging of different ion species ejected from 50 nm SiO2 nanoparticles are obtained excitedly by strong near-infrared and ultraviolet femtosecond laser fields.
Sun Fenghao   +10 more
doaj   +1 more source

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

open access: yesFEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu   +17 more
wiley   +1 more source

Bayesian Quantum Noise Spectroscopy [PDF]

open access: yes, 2017
As commonly understood, the noise spectroscopy problem---characterizing the statistical properties of a noise process affecting a quantum system by measuring its response---is ill-posed.
Ferrie, Christopher   +3 more
core   +1 more source

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