Results 91 to 100 of about 1,589,837 (361)

A Vertically‐Stacked Optoelectronic Sensor for Localized Hemodynamics Monitoring

Advanced Functional Materials, EarlyView.
This work introduces a hemodynamics monitoring sensor that features vertically stacked microLEDs and a heterogeneously integrated photodetector. The vertically stacked microLEDs enable localized measurements, and by designing the interoptode distance according to the depth of the target region, this vertically stacked optoelectronic sensor is ...
Taeyeon Lee, Jieun Jung, Hyeongoh Park, Dongwuk Jung, Doyune Kim, Changeui Hong, Seungbeom Kang, Hyunsoo Kim, Tae Kim, Jongho Lee   +9 more
wiley   +1 more source

Total Solar Eclipse White-light Images as a Benchmark for Potential Field Source Surface Coronal Magnetic Field Models: An In-depth Analysis over a Solar Cycle

The Astrophysical Journal
Potential field source surface (PFSS) models are widely used to simulate coronal magnetic fields. PFSS models use the observed photospheric magnetic field as the inner boundary condition and assume a perfectly radial field beyond a “source surface” ( R ...
Luke Fushimi Benavitz, Benjamin Boe, Shadia Rifai Habbal   +2 more
doaj   +1 more source

Parity of the Solar Magnetic Fields and Related Astrophysical Phenomena [PDF]

arXiv, 2010
The cumulative contribution of odd (Bo) and even (BE) parity zonal magnetic multipoles to the solar magnetic fields is calculated using spherical harmonic coefficients of the photospheric magnetic field for the years 1959-1985. The dominant parity of the solar magnetic field is shown to change from odd to even during every sunspot cycle.
arxiv  

Ambient‐Dried MOF/Cellulose‐Based Aerogels for Atmospheric Water Harvesting and Sustainable Water Management in Agriculture

Advanced Functional Materials, EarlyView.
Ambient‐dried composite aerogels integrating MOF‐303, TEMPO‐oxidized cellulose nanofibers (TOCNF), and hygroscopic salts enable high‐performance atmospheric water harvesting (AWH), achieving competitive uptake at both low and high humidity. Enhanced with a solar‐evaporation layer, these scalable aerogels support self‐sustained plant growth in a ...
Ahmadreza Ghaffarkhah, Mahyar Panahi‐Sarmad, Sara Rostami, Orysia Zaremba, Lukas Alexander Bauman, Seyyed Alireza Hashemi, Subhajit Dutta, Pu Yang, Tianyu Guo, Feng Jiang, Stefan Wuttke, Mohammad Arjmand, Orlando J. Rojas   +12 more
wiley   +1 more source

Magnetic fields of Sun-like stars [PDF]

, 2013
Magnetic fields play an important role at all stages of stellar evolution. In Sun-like stars, they are generated in the outer convective layers. Studying the large-scale magnetic fields of these stars enlightens our understanding of the field properties and gives us observational constraints for the field generation models.
arxiv   +1 more source

Exciton Dynamics in Layered Halide Perovskite Light‐Emitting Diodes

Advanced Materials, EarlyView.
This review discusses the exciton dynamics in layered halide perovskitelight‐emitting diodes (PeLEDs). It opens with a summary of the structural and photophysical aspects, followed by an exploration of controlling dimensionality and cascade exciton transfer in quasi‐2D PeLEDs.
Sung‐Doo Baek, Seok Joo Yang, Hanjun Yang, Wenhao Shao, Yu‐Ting Yang, Letian Dou   +5 more
wiley   +1 more source

Strategies for Controlling Emission Anisotropy in Lead Halide Perovskite Emitters for LED Outcoupling Enhancement

Advanced Materials, EarlyView.
The rise of lead halide perovskite semiconductors has enabled high‐performance LEDs with internal quantum efficiencies approaching 100%. In order to further enhance the external quantum efficiencies limited by light outcoupling effects, in this account, the strategies for reducing energy dissipation through the substrate, waveguide, and evanescent ...
Tommaso Marcato, Sudhir Kumar, Chih‐Jen Shih   +2 more
wiley   +1 more source

Condensate Nuclei and Magnetic Polarity Reversals in the Sun and Solar-type Stars [PDF]

arXiv, 2015
Magnetic field generation in the Sun and solar-type stars is modeled here based on the formation of magnetically polarized condensates (B. M. Mirza, Mod. Phys. Lett. B 28 (2014) 1450148) under the high density and pressure conditions. The correct orders of magnitude for the time period and the energy loss in a solar cycle are deduced, as well as the ...
arxiv  

Acoustic wave propagation in the solar sub-photosphere with localised magnetic field concentration: effect of magnetic tension [PDF]

, 2009
Aims. In this paper we analyse numerically the propagation and dispersion of acoustic waves in the solar-like sub-photosphere with localised non-uniform magnetic field concentrations, mimicking sunspots with various representative magnetic field configurations. Methods.
arxiv   +1 more source

Advancing Metal–Organic Framework‐Based Composites for Effective Chemical Warfare Agent Detoxification under Real‐World Conditions

Advanced Materials, EarlyView.
This review describes recent developments in the design and synthesis of metal–organic frameworks (MOF)/textile composites for the detoxification of chemical warfare agent and simulants with extensive discussion on the advantages and disadvantages of different methods.
Zhihua Cheng, Kira M. Fahy, Gregory W. Peterson, Kent O. Kirlikovali, Omar K. Farha   +4 more
wiley   +1 more source