Results 61 to 70 of about 253,481 (293)

Passivated SiC Surfaces for Photonic and Quantum Applications: Balancing Chemical Stability and Surface Luminescence

open access: yesAdvanced Materials Interfaces, EarlyView.
Low‐temperature passivation of SiC reveals that optical surface quality and chemical stability are not directly correlated. Ar plasma‐treated and SiNx‐passivated surfaces yield the lowest photoluminescence background, whereas CF4 plasma and ALD‐grown dielectrics introduce higher emission.
Marina Scharin‐Mehlmann   +4 more
wiley   +1 more source

Comparative Study on Cold Compaction Behavior of TiH2 Powder and HDH-Ti Powder

open access: yesAdvances in Materials Science and Engineering, 2021
The compaction mechanism of titanium hydride powder is an important issue because it has a direct impact on density and strength of green compacts and ultimately on the physical and mechanical properties of a final sintered products.
Shucheng Dong   +6 more
doaj   +1 more source

The impact of carbon materials on the hydrogen storage properties of light metal hydrides [PDF]

open access: yes, 2011
The safe and efficient storage of hydrogen is still one of the remaining challenges towards fuel cell powered cars. Metal hydrides are a promising class of materials as they allow the storage of large amounts of hydrogen in a small volume at room ...
Adelhelm, Philipp, De Jongh, Petra E.
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Identification of nickel hydride phase in nickel matrix by optical microscope observation

open access: yesResults in Materials, 2020
It is well known that nickel transforms into nickel hydride under high hydrogen fugacity. However, distribution of the hydride formation is not necessarily uniform.
Noriyuki Takano, Hiroki Yamamoto
doaj   +1 more source

Parametrization of a reactive force field for aluminum hydride [PDF]

open access: yes, 2009
A reactive force field, REAXFF, for aluminum hydride has been developed based on density functional theory (DFT) derived data. REAXFF_(AlH_3) is used to study the dynamics governing hydrogen desorption in AlH_3.
Goddard, William A., III   +4 more
core  

Reactivity of Gold Hydrides: O2 Insertion into the Au–H Bond [PDF]

open access: yes, 2015
Dioxygen reacts with the gold(I) hydride (IPr)AuH under insertion to give the hydroperoxide, (IPr)AuOOH, a long-postulated reaction in gold catalysis and the first demonstration of O2 activation by Au-H in a well-defined system.
Barrio L.   +28 more
core   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

open access: yesAdvanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt   +11 more
wiley   +1 more source

Hydrogen Embrittlement of Titanium: Phenomena and Main Ways of Prevention

open access: yesУспехи физики металлов
This work deals with the issue of the deterioration of the mechanical properties of metallic materials (on an example of Ti) in the presence of hydrogen (hydrogen embrittlement). Three main forms of fracture caused by the presence of hydrogen in metallic
V.A. Dekhtyarenko, T.V. Pryadko, О.І. Boshko, V.V. Kirilchuk, H.Yu. Mykhailova, and V.I. Bondarchuk
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

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