Results 111 to 120 of about 357,990 (292)

Harnessing Outer Space for Improved Electrocaloric Cooling

Advanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo, Hyung Rae Kim, Joo Ho Yun, Hyunkyu Kwak, Do Hyeon Kim, Se‐Yeon Heo, Rujun Ma, Gil Ju Lee, Young Min Song   +8 more
wiley   +1 more source

X-ray refraction distinguishes unprocessed powder from empty pores in selective laser melting Ti-6Al-4V

Materials Research Letters, 2018
For the first time, X-ray refraction techniques are proven for the identification of void formation in Ti-6Al-4V parts produced by selective laser melting.
R. Laquai, B. R. Müller, G. Kasperovich, J. Haubrich, G. Requena, G. Bruno   +5 more
doaj   +1 more source

Off‐Stoichiometry Engineering of the Electrical and Optical Properties of SrNbO3 Using Oxide Molecular Beam Epitaxy

Advanced Functional Materials, EarlyView.
The plasma edge of transparent conducting oxide SrNbO3 shifts from ∼2 eV in the visible range to 1.37 eV in the near‐infrared region by off‐stoichiometry using the vacancy sites as quasi‐substitutional virtual elements. This work advances the stoichiometry engineering of perovskite oxides using oxide molecular beam epitaxy, allowing synthesis beyond ...
Jasnamol Palakkal, Alexey Arzumanov, Ruiwen Xie, Zhiyuan Li, Niloofar Hadaeghi, Thomas Wagner, Tianshu Jiang, Yating Ruan, Gennady Cherkashinin, Leopoldo Molina Luna, Hongbin Zhang, Lambert Alff   +11 more
wiley   +1 more source

Toward optimal X-ray flux utilization in breast CT [PDF]

, 2011
A realistic computer-simulation of a breast computed tomography (CT) system and subject is constructed. The model is used to investigate the optimal number of views for the scan given a fixed total X-ray fluence.
Hansen, Per Christian, Joergensen, Jakob H., Pan, Xiaochuan, Reiser, Ingrid S., Sidky, Emil Y.   +4 more
core  

Comparison of different sources for laboratory X-ray microscopy

, 2012
This paper describes the setup of two different solutions for laboratory X-ray microscopy working with geometric magnification. One setup uses thin-film transmission targets with an optimized tungsten-layer thickness and the electron gun and optics of an
Ebensperger, Thomas, Hanke, Randolf, Nachtrab, Frank, Stahlhut, Philipp, Zabler, Simon   +4 more
core   +1 more source

Toward Architected Microstructures Using Advanced Laser Beam Shaping in Laser Powder Bed Fusion of Ti‐6Al‐4V

Advanced Functional Materials, EarlyView.
This research applies advanced laser beam shaping (LCoS‐SLM) to fabricate the Ti‐6Al‐4V alloy via laser powder bed fusion. A tailored beam is used to prevent martensite formation and create a dual α+β microstructure by controlling cooling rates.
Reza Esmaeilzadeh, Jamasp Jhabvala, Lucas Schlenger, Mathijs van der Meer, Eric Boillat, Cyril Cayron, Amir Mohammad Jamili, Junfeng Xiao, Roland E. Logé   +8 more
wiley   +1 more source

Ring artefacts in X-ray computed tomography

The British Journal of Radiology, 1988
In a recent letter (Coulden & Dixon, 1987) it was suggested that central ring artefacts in computed tomography (CT) are caused by low photon transmission through the centre of the body, rather than by detector miscalibration or malfunction. The authors stated that the “artefacts are sometimes unavoidable in very obese patients, even when meticulous
P. S. Tofts, R. W. Cranage
openaire   +3 more sources

Self‐Cascade Catalytic Reaction–Assisted Apoptosis/Calcicoptosis/Ferroptosis Induction with Microsphere‐Aggregated Hydrogels in Triple‐Negative Breast Cancer Therapy

Advanced Functional Materials, EarlyView.
Hyaluronic acid‐dopamine‐based intra‐crosslinked microsphere including cisplatin (HPC MS) is fabricated by spray‐drying and calcium/iron ions are introduced for interparticle crosslinking. Designed microsphere‐aggregated hydrogel (MAH) system including cisplatin/CaO2/FeSO4 can provide apoptosis/calcicoptosis/ferroptosis‐mediated chemo/cascade ...
ChaeRim Hwang, Yeoung Eun Choi, Song Yi Lee, Mrinmoy Karmakar, Qiaojun Hao, Junmin Lee, Hyun‐Jong Cho   +6 more
wiley   +1 more source

Neural networks for calibration tomography [PDF]

Artificial neural networks are suitable for performing pattern-to-pattern calibrations. These calibrations are potentially useful for facilities operations in aeronautics, the control of optical alignment, and the like.
Decker, Arthur
core   +1 more source

Control of Ferromagnetism of Vanadium Oxide Thin Films by Oxidation States

Advanced Functional Materials, EarlyView.
The nonstoichiometric VOx exhibits a distinct ferromagnetic hysteresis loop and demonstrates a high magnetic susceptibility (χ=dMdH$ = \frac{{dM}}{{dH}}\;$∼10). Micromagnetic simulations show the results of the “partial volume fraction ferromagnetic phase model” for VOx/Co/Pt structure.
Kwonjin Park, Jaeyong Cho, Soobeom Lee, Jaehun Cho, Jae‐Hyun Ha, Jinyong Jung, Dongryul Kim, Won‐Chang Choi, Jung‐Il Hong, Chun‐Yeol You   +9 more
wiley   +1 more source