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  • MAX phase materials are novel layered carbon-nitride inorganic non-metallic materials with the electrical and thermal conductive qualities of metals Wurtzite Boron Nitride (wBN) is a wide band gap BN polymorph with unique mechanical properties such as hardness and stiffness. Initially synthesized in 1963 by transforming hexagonal BN (hBN) under high temperature and pressure conditions, wBN can now be stabilized at atmospheric pressure to obtain high-quality samples. Our first-principles study investigates the electronic, vibrational, and optical properties of wBN across a broad range of pressures. We account for the electron-hole interaction What is Wurtzite Boron Nitride?Wurtzite Boron Nitride (wBN) is a wide band gap BN polymorph with unique mechanical properties such as hardness and stiffness. Initially synthesized in 1963 by transforming hexagonal BN (hBN) under high temperature and pressure conditions, wBN can now be stabilized at atmospheric pressure to obtain high-quality samples. Our first-principles study investigates the electronic, vibrational, and optical properties of wBN across a broad range of pressures. We account fo Experimental and QM studies agree that the B4C crystal structure has rhombohedral symmetry with the R3̅m space group. The unit cell of B4C contains one 12-atom icosahedron located at the apexes of the primitive cell with one 3-atom linear chain aligned along the [111]r direction. Each icosahedron involves two crystallographic sites: six polar sites (p) connecting directly to other icosahedra and six equatorial sites (denoted as e) connecting with the 3-atom chains. The B4C structure was original The silicon nitride planar waveguide platform has enabled a broad class of low-loss planar-integrated devices and chip-scale solutions that benefit from transparency over a wide wavelength range and fabrication using wafer-scale processes. As a complimentary platform to silicon-on-insulator and III-V photonics, Si 3 N 4 waveguide technology opens up a new generation of system-on-chip applications not achievable with the other platforms alone. The availability of low-loss waveguides ( Amorphous boron powder (ABP) has a comparative edge over conventional fuels like aluminum, magnesium, etc., owing to its high heat of combustion for use in fuel-rich propellants for integrated rocket ramjets. The low atomic weight, high heat output, ready ignitability with KNO, releasing large amounts of heat, and persistent burning even at low-pressure2 make boron-based pyrotechnic composition a beautiful igniter. High Energy Materials Research Laboratory, Pune, has established a process for pr The structure and phase composition of colloidal SPM Fe3O4 NPs remains puzzling despite the availability of increasing amounts of structural information. Various spectroscopic measurements have shown that the structure of SPM Fe3O4 NPs can be described as a magnetite core with a thin overoxidized (Fe3+) surface shell, which is compositionally close to a maghemite polymorph (γ-Fe2O3).9a, Conversely, the putative Fe3O4@γ-Fe2O3 core−shell structure has not been observed by X-ray diffraction or elec As a ferromagnetic powder and conductive material, Fe3O4 has found interesting and important applications in different science, technology, and industry sectors. Fe3O4 magnetic powder has a very common application as black pigment. The time-dependent magnetism property of Fe3O4 is an advantage for applications at different temperatures for particular purposes. The unique electronic structure of Fe3O4 originates from the combination of ferric and ferrous ions, making it a superconductor while bei NiTi alloy has the characteristic of the shape-memory. It will return to its previous shape from the deformation at some specific temperature. It also contains some significant characteristics, such as super-elastic, anti-abrasive, anti-corrosive, high damping, and radiopacity, and generates no effect on MRI. In aerospace engineering applications, it has been used to assemble the space station antenna. It is the material for tooth archwire and coronary stent for medical use. However, the applica 3D printing produces very little waste compared to traditional manufacturing methods that use material reduction. Also, the direct forming features of this manufacturing method reduces the amount of equipment needed in the production. Metal powder is used as the raw material in metal 3D-printing. Its properties have a strong relationship with the quality of final products. The main requirements for metal powder 3D-printing are chemical composition and particle shape. They also include particle s

What is MAX/MXene phase material?

MAX phase materials are novel layered carbon-nitride inorganic non-metallic materials with the electrical and thermal conductive qualities of metals…

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Nonreversible Transition from the Hexagonal to Wurtzite Phase of Boron Nitride

Wurtzite Boron Nitride (wBN) is a wide band gap BN polymorph with unique mechanical properties such as hardness and stiffness. Initially synthesized in 1963 by transforming hexagonal BN (hBN) under high temperature and pressure conditions, wBN can no...…

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Wurtzite Boron Nitride Crystal Growth in the Region of Cubic Boron Nitride Crystal Synthesizing

What is Wurtzite Boron Nitride?Wurtzite Boron Nitride (wBN) is a wide band gap BN polymorph with unique mechanical properties such as hardness and stiffness. Initially synthesized in 1963 by transforming hexagonal BN (hBN) under high temperature and ...…

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The B4C crystal structure has rhombohedral symmetry

Experimental and QM studies agree that the B4C crystal structure has rhombohedral symmetry with the R3̅m space group. The unit cell of B4C contains one 12-atom icosahedron located at the apexes of the primitive cell with one 3-atom linear chain align...…

More>>

The silicon nitride planar waveguide platform has enabled a broad class

The silicon nitride planar waveguide platform has enabled a broad class of low-loss planar-integrated devices and chip-scale solutions that benefit from transparency over a wide wavelength range and fabrication using wafer-scale processes. As a compl...…

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Amorphous boron powder has a comparative edge over conventional fuels

Amorphous boron powder (ABP) has a comparative edge over conventional fuels like aluminum, magnesium, etc., owing to its high heat of combustion for use in fuel-rich propellants for integrated rocket ramjets. The low atomic weight, high heat output, ...…

More>>

The structure and phase composition of colloidal SPM Fe3O4 NPs

The structure and phase composition of colloidal SPM Fe3O4 NPs remains puzzling despite the availability of increasing amounts of structural information. Various spectroscopic measurements have shown that the structure of SPM Fe3O4 NPs can be describ...…

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Fe3O4 has found interesting and important applications in different science

As a ferromagnetic powder and conductive material, Fe3O4 has found interesting and important applications in different science, technology, and industry sectors. Fe3O4 magnetic powder has a very common application as black pigment. The time-dependent...…

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NiTi alloy has the characteristic of the shape memory

NiTi alloy has the characteristic of the shape-memory. It will return to its previous shape from the deformation at some specific temperature. It also contains some significant characteristics, such as super-elastic, anti-abrasive, anti-corrosive, hi...…

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The 3D printing revolution that has upended modern manufacturing |

3D printing produces very little waste compared to traditional manufacturing methods that use material reduction. Also, the direct forming features of this manufacturing method reduces the amount of equipment needed in the production. Metal powder is...…

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MoS2 has achieved prime progress in the field of optoelectronics

MoS2 has achieved prime progress in optoelectronics, energy storage and conversion, hydrogen evolution reaction (HER), and next-generation switches. Moreover, MoS2 layers are often associated with crystal-dependent fluorescence or the ability to quen...…

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ZnS has a unique structure type compared to other molecules

ZnS has a unique structure type compared to other molecules, having different types of individual structures. ZnS can have a zinc blende struck, ais a "diamond-type net, "or rk", and at a different temperature, ZnS can become the wurtzite structure w...…

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Supported by Two Major Elements, Eucommia Gum Is Called ＂Strategic New Material＂

Eucommia Gum is an excellent polymer material with dual properties of rubber and plastic. It can be used to develop thermoplastic functional materials, especially high elasticity materials of Eucommia Gum.…

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At Very Low Temperature, In The Tungsten Disulfide Sheet, The Realization Of Valley Coherent Photoluminescence

Scientists used silver sawtooth nano clamp arrays to generate valley-coherent photoluminescence in two-dimensional tungsten disulfide sheets at room temperature. So far, this can only be achieved at shallow temperature.…

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Polyethylene glycol monooleate

Polyethylene glycol monooleate is used as a solvent, W/O emulsifier and industrial lubricant.It also can be used for pickling and emulsifying insecticides, as well as water-soluble coatings, printed circuit boards and other materials. Polyethylene ...…

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