Results 171 to 180 of about 866,445 (369)

Single and Bi‐Layer Glass‐Based Phantoms: Robust Materials for a Calibration Standard for Fluorescence Imaging Systems

open access: yesAdvanced Photonics Research, EarlyView.
Fluorescence‐guided surgery is a common technique and characterizing imaging performance is important to ensure clinical reliability. A calibration standard comprising multiple glass phantoms fabricated to mimic the optical properties of fluorescent and non‐fluorescent tissue is presented.
Mingze Yang   +6 more
wiley   +1 more source

H2 Chemistry and Protonation in the Dayside Venusian Upper Atmosphere

open access: yesThe Astronomical Journal
Although H _2 is present in low concentrations, it critically controls the structure and composition of planetary upper atmospheres through protonation under solar extreme-ultraviolet and soft X-ray irradiation. Recent studies highlight the importance of
Shiqi Wu   +3 more
doaj   +1 more source

Synthesis and Optical Properties of Single‐Crystalline Phosphors Gd3In2Ga3O12:RE3+ (RE = Nd3+ and Ho3+) Grown via the Optical Float Zone Method

open access: yesAdvanced Photonics Research, EarlyView.
Nd3+‐ and Ho3+‐doped Gd3In2Ga3O12 single crystals have been successfully synthesized via the optical float zone method. Their structure and optical characterization demonstrate efficient narrow‐line 4f–4f emission, low cross‐relaxation, and bright photoluminescence, indicating their potential as advanced optical materials for photonic applications. The
Hasan Yilmaz   +5 more
wiley   +1 more source

Strong Fractionation of Deuterium and Helium in Sub-Neptune Atmospheres along the Radius Valley

open access: yesThe Astrophysical Journal
We simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deuterium
Collin Cherubim   +3 more
doaj   +1 more source

Laboratory evaluation and application of microwave absorption properties under simulated conditions for planetary atmospheres [PDF]

open access: yes, 1984
The recognition of the need to make laboratory measurements of simulated planetary atmospheres over a range of temperatures and pressure which correspond to the altitudes probed by radio occultation experiments, and over a range of frequencies which ...
Steffes, P. G.
core   +3 more sources

Pressure‐Assisted Ceramic Processing of Metal Halide Perovskites

open access: yesAdvanced Photonics Research, EarlyView.
This review critically assesses low‐temperature, pressure‐assisted ceramic processing as a pivotal technique to fabricate dense, polycrystalline wafers with precisely controlled macroscopic dimensions as well as microstructural properties. The aim is to bridge understanding between expert ceramists and halide perovskite specialists, highlighting the ...
Michael C. Brennan   +5 more
wiley   +1 more source

Exoplanet Atmospheric Refraction Effects in the Kepler Sample

open access: yesThe Astronomical Journal
We present an analysis on the detection viability of refraction effects in Kepler’s exoplanet atmospheres using binning techniques for their light curves in order to compare against simulated refraction effects.
Déreck-Alexandre Lizotte   +3 more
doaj   +1 more source

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