Phonon Spectrum of Boron Nitride with Wurtzite Structure

1983 ◽  
Vol 118 (2) ◽  
pp. 493-498 ◽  
Author(s):  
T. D. Sokolovskii
Keyword(s):  
Boron Nitride ◽  
Phonon Spectrum ◽  
Wurtzite Structure

Phonon Spectrum of Zinc-Blende Boron Nitride

2014 ◽  
Vol 2 (1) ◽  
pp. 96-98
Author(s):  
A. K. Kushwaha
Keyword(s):  
Boron Nitride ◽  
Phonon Spectrum ◽  
Zinc Blende

Phonon spectrum of single-walled boron nitride nanotubes

2004 ◽  
Vol 13 (9) ◽  
pp. 1526-1530 ◽  
Author(s):  
Xiao Yang ◽  
Yan Xiao-Hong ◽  
Cao Jue-Xian ◽  
Mao Yu-Liang ◽  
Xiang Jun
Keyword(s):  
Boron Nitride ◽  
Phonon Spectrum ◽  
Boron Nitride Nanotubes

Development of Crystallinity in Turbostratic Boron Nitride Derived from Polymeric Precursors

1991 ◽  
Vol 49 ◽  
pp. 954-955
Author(s):  
X. Qiu ◽  
A. K. Datye ◽  
T. T. Borek ◽  
R. T. Paine
Keyword(s):  
Thermal Treatment ◽  
Boron Nitride ◽  
Diffraction Pattern ◽  
Polymeric Precursors ◽  
Polymer Precursors ◽  
Diffuse Ring

Boron nitride derived from polymer precursors is of great interest for applications such as fibers, coatings and novel forms such as aerogels. The BN is prepared by the polymerization of functionalized borazine and thermal treatment in nitrogen at 1200°C. The BN powders obtained by this route are invariably trubostratic wherein the sheets of hexagonal BN are randomly oriented to yield the so-called turbostratic modification. Fib 1a and 1b show images of BN powder with the corresponding diffraction pattern in fig. 1c. The (0002) reflection from BN is seen as a diffuse ring with occational spots that come from crystals of BN such as those shown in fig. 1b. The (0002) lattice fringes of BN seen in these powders are the most characteristic indication of the crystallinity of the BN.

Structural relationships in the synthesis of cubic boron nitride thin films by ion-assisted deposition

1994 ◽  
Vol 52 ◽  
pp. 638-639
Author(s):  
D. L. Medlin ◽  
T. A. Friedmann ◽  
P. B. Mirkarimi ◽  
M. J. Mills ◽  
K. F. McCarty
Keyword(s):  
Boron Nitride ◽  
Ion Irradiation ◽  
Cubic Boron Nitride ◽  
Film Stress ◽  
Bonded Phases ◽  
Structural Relationships ◽  
Precursor Material ◽  
Pressure Synthesis ◽  
Microstructure Of The Material

The allotropes of boron nitride include two sp2-bonded phases with hexagonal and rhombohedral structures (hBN and rBN) and two sp3-bonded phases with cubic (zincblende) and hexagonal (wurtzitic) structures (cBN and wBN) (Fig. 1). Although cBN is synthesized in bulk form by conversion of hBN at high temperatures and pressures, low-pressure synthesis of cBN as a thin film is more difficult and succeeds only when the growing film is simultaneously irradiated with a high flux of ions. Only sp2-bonded material, which generally has a disordered, turbostratic microstructure (tBN), will form in the absence of ion-irradiation. The mechanistic role of the irradiation is not well understood, but recent work suggests that ion-induced compressive film stress may induce the transformation to cBN.Typically, BN films are deposited at temperatures less than 1000°C, a regime for which the structure of the sp2-bonded precursor material dictates the phase and microstructure of the material that forms from conventional (bulk) high pressure treatment.

Molecular insights on the dynamic stability of peptide nucleic acid functionalized carbon and boron nitride nanotubes

2021 ◽  
Vol 23 (1) ◽  
pp. 219-228
Author(s):  
Nabanita Saikia ◽  
Mohamed Taha ◽  
Ravindra Pandey
Keyword(s):  
Nucleic Acid ◽  
Boron Nitride ◽  
Nucleic Acids ◽  
Dynamic Stability ◽  
Peptide Nucleic Acid ◽  
Rational Design ◽  
Peptide Nucleic Acids ◽  
Boron Nitride Nanotubes ◽  
Molecular Hybrids ◽  
Single Wall Nanotubes

The rational design of self-assembled nanobio-molecular hybrids of peptide nucleic acids with single-wall nanotubes rely on understanding how biomolecules recognize and mediate intermolecular interactions with the nanomaterial's surface.

LOW-FREQUENCY PHONON SPECTRUM PECULIARITIES OF Sn-Pb ALLOYS

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-1037-C6-1038
Author(s):  
V.M. Pan ◽  
B.G. Nikitin ◽  
A.M. Korostil ◽  
V.V. Nemoshkalenko ◽  
V.P. Dovgopol ◽  
...  
Keyword(s):  
Phonon Spectrum ◽  
Low Frequency
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