Two polymorphic modifications of (BEDT-TTF)2IC12 crystals with metallic and semiconductor properties

1988 ◽  
Vol 37 (9) ◽  
pp. 1815-1820
Author(s):  
L. I. Buravov ◽  
A. V. Zvarykina ◽  
A. A. Ignat'ev ◽  
A. I. Kotov ◽  
V. N. Laukhin ◽  
...  
Keyword(s):  
Polymorphic Modifications ◽  
Semiconductor Properties

SEMICONDUCTOR PROPERTIES OF THE ANODIC POLYMER OBTAINED ON PLATINUM FROM SELENOCYANATE AMMONIATE

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-1357-C3-1359
Author(s):  
M. Bragadin ◽  
G. Scarponi ◽  
F. Ossola ◽  
F. Pucciarelli ◽  
M. G. Bettoli
Keyword(s):  
Semiconductor Properties

Study of Bismuth Telluride Crystal Strength

2019 ◽  
pp. 1-8
Author(s):  
A. A. Gorbatovskiy
Keyword(s):  
Tensile Strength ◽  
Bismuth Telluride ◽  
Elasticity Modulus ◽  
Testing Machine ◽  
Bend Testing ◽  
Instron Testing Machine ◽  
Measurement Results ◽  
Strength Tests ◽  
Semiconductor Properties

The article presents results of strength tests of bismuth telluride prismatic samples obtained by growing crystals. These crystals have semiconductor properties and are used in the heat machines, the run-ability of which largely depends on the strength of crystals. Data available in the literature are significantly different from each other. It has been shown that, the most consistent strength tests results are obtained in case of bend testing. The measurement results of the elasticity modulus and tensile strength are given. For tests, an INSTRON testing machine with maximum direct stress of the 1000 H was used.

Differentiated Scanning Calorimetry of Model Systems with Cocoa Butter

Food Industry ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 29-36
Author(s):  
Alexander Vereshchagin ◽  
Irina Reznichenko ◽  
Nikolay Bychin
Keyword(s):  
Cocoa Butter ◽  
Palm Olein ◽  
Palm Stearin ◽  
Model Systems ◽  
Scanning Calorimetry ◽  
Glucose Syrup ◽  
Polymorphic Modifications ◽  
Confectionery Products ◽  
System Temperature ◽  
Dsc Method

The article concerns the research specificity of model systems such as cocoa butter – palm olein, cocoa butter – sucrose and cocoa butter – glucose syrup by the differential scanning calorimetry (DSC) method. The researchers run experiments in the temperature range from –100 to –50°C at a heating rate of 10 °C/min. In the cacao butter – palm olein system an eutectic occurs with a palm olein content of 30.0 % indicating the limited solubility of palm olein in cocoa butter. In the cocoa butter – sucrose system, cocoa butter crystallizes as in the α-form (10,0– 30,0; 60.0–90.0 % MK), and as a mixture of α-and β-forms of MK (40.0; 50,0; 70,0 and 80.0 %). Sucrose stabilizes low-temperature polymorphic modifications of cocoa butter. In the cocoa butter – glucose syrup system, temperature of samples melting is 21-22 °C. This composition is promising for use as a filling of confectionery products and glazes production. In this regard, a man can use glucose syrup only in the candy cases production. The role of surfactants used for the formation and stabilization of cocoa butter polymorphs and increasing the thermal stability of the shock-lad without the introduction of palm stearin requires separate consideration.

Semiconductors

2018 ◽  
Author(s):  
L. Solymar ◽  
D. Walsh ◽  
R. R. A. Syms
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Vapour Deposition ◽  
Energy Levels ◽  
Chemical Vapour ◽  
Optical Excitation ◽  
Organic Chemical ◽  
Metal Organic ◽  
Mathematical Relations ◽  
Semiconductor Properties

Both intrinsic and extrinsic semiconductors are discussed in terms of their band structure. The acceptor and donor energy levels are introduced. Scattering is discussed, from which the conductivity of semiconductors is derived. Some mathematical relations between electron and hole densities are derived. The mobilities of III–V and II–VI compounds and their dependence on impurity concentrations are discussed. Band structures of real and idealized semiconductors are contrasted. Measurements of semiconductor properties are reviewed. Various possibilities for optical excitation of electrons are discussed. The technology of crystal growth and purification are reviewed, in particular, molecular beam epitaxy and metal-organic chemical vapour deposition.

Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF‐199

2021 ◽  
Vol 6 (3) ◽  
pp. 425-429
Author(s):  
Haleemathul Zahadiya ◽  
Ruwan P. Wijesundera ◽  
Champika V. Hettiarachchi ◽  
Ishanie R. Perera
Keyword(s):  
Benzene Derivatives ◽  
Guest Molecules ◽  
Semiconductor Properties

Verification of hypothesis about structural memory of solutions of polymorphic modifications using NMR spectroscopy

2021 ◽  
Vol 70 (1) ◽  
pp. 91-98
Author(s):  
N. E. Kuz’mina ◽  
S. V. Moiseev ◽  
V. S. Kuz’min ◽  
M. D. Khorol’skiy ◽  
A. I. Luttseva
Keyword(s):  
Nmr Spectroscopy ◽  
Polymorphic Modifications ◽  
Structural Memory

Preparation and properties of two polymorphic modifications of β-hydroxysulfoxide of the pinane series

2012 ◽  
Vol 82 (3) ◽  
pp. 440-445 ◽  
Author(s):  
A. V. Aref’ev ◽  
V. A. Startsev ◽  
L. E. Nikitina ◽  
O. A. Lodochnikova ◽  
E. N. Klimovitskii ◽  
...  
Keyword(s):  
Polymorphic Modifications

ChemInform Abstract: Metastable Cd4Sb3: A Complex Structured Intermetallic Compound with Semiconductor Properties.

ChemInform ◽  
2009 ◽  
Vol 40 (7) ◽  
Author(s):  
Andreas Tenga ◽  
Sven Lidin ◽  
Jean-Philippe Belieres ◽  
N. Newman ◽  
Yang Wu ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Semiconductor Properties
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