High pressure characterization and modelling of CaCO3powder mix in the Bridgman anvil apparatus

2012 ◽  
Vol 32 (4) ◽  
pp. 490-508
Author(s):  
Sven Berg ◽  
Pär Jonsén ◽  
Hans-Åke Häggblad ◽  
Johan E. Carlson
Keyword(s):  
High Pressure ◽  
Bridgman Anvil

NMR measurements of the quasi-one-dimensional superconductor under high pressure using a modified Bridgman anvil cell

2007 ◽  
Vol 310 (2) ◽  
pp. 1110-1112 ◽  
Author(s):  
Tomokazu Kozuka ◽  
Masayuki Itoh ◽  
Nao Takeshita ◽  
Chieko Terakura ◽  
Touru Yamauchi ◽  
...  
Keyword(s):  
High Pressure ◽  
Bridgman Anvil ◽  
One Dimensional

Notes on Compressible Gasket and Bridgman-Anvil Type High Pressure Apparatus

1972 ◽  
Vol 11 (4) ◽  
pp. 578-590 ◽  
Author(s):  
Masao Wakatsuki ◽  
Kazuaki Ichinose ◽  
Toshio Aoki
Keyword(s):  
High Pressure ◽  
Bridgman Anvil ◽  
High Pressure Apparatus

Structural, optical and high pressure electrical resistivity studies of pure NiO and Cu-doped NiO nanoparticles

2016 ◽  
Vol 30 (10) ◽  
pp. 1650056 ◽  
Author(s):  
M. Abila Marselin ◽  
N. Victor Jaya
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
High Pressures ◽  
Precipitation Method ◽  
Nio Nanoparticles ◽  
Bridgman Anvil ◽  
Resistivity Measurements ◽  
Diamond Anvil ◽  
Set Up ◽  
Co Precipitation

In this paper, pure NiO and Cu-doped NiO nanoparticles are prepared by co-precipitation method. The electrical resistivity measurements by applying high pressure on pure NiO and Cu-doped NiO nanoparticles were reported. The Bridgman anvil set up is used to measure high pressures up to 8 GPa. These measurements show that there is no phase transformation in the samples till the high pressure is reached. The samples show a rapid decrease in electrical resistivity up to 5 GPa and it remains constant beyond 5 GPa. The electrical resistivity and the transport activation energy of the samples under high pressure up to 8 GPa have been studied in the temperature range of 273–433 K using diamond anvil cell. The temperature versus electrical resistivity studies reveal that the samples behave like a semiconductor. The activation energies of the charge carriers depend on the size of the samples.

scholarly journals Pressure Dependence of the Electrical Resistivity in Polymer Polyaniline

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Daihui Huang ◽  
Dong Xie ◽  
Jingjing Gao ◽  
Wangchun Lv ◽  
Shiming Hong
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
Ph Value ◽  
Applied Pressure ◽  
Normal Pressure ◽  
Emeraldine Base ◽  
Bridgman Anvil ◽  
Base Form ◽  
Conducting Salt ◽  
Polaron Band

Polyaniline (PAN) was prepared by using a technique of chemical synthesis to obtain the insulating emeraldine base form. And then PAN was doped with toluenesulfonic acid (TSA), HCl, or camphor sulfonic acid (CSA) to protonate it into conducting salt form. The morphologies and electrical property of PAN under atmospheric pressure were investigated. Subsequently, the high pressure using a Bridgman anvil cell was applied on the doped PAN, and the effect of high pressure on the properties of doped PAN was analyzed. At normal pressure, the conductivity of PAN increases as the PH value increases. While at high pressures, the conductivity of PAN increases, and then it becomes independent of pressure. The results indicate that the conductivity of PAN is related to the presence of the polaron band, and the doped PAN under high pressure will be enhanced strongly in conductivity because of overlap of polaron band andπband. However, with the further increase of the applied pressure, scattering mechanisms of carriers limit the conductivity of PAN.

Clamp Type High Pressure Apparatus Using Small Bridgman Anvil at Low Temperature

1972 ◽  
Vol 11 (4) ◽  
pp. 591-596 ◽  
Author(s):  
Genshiro Fujii ◽  
Yasukage Oda ◽  
Hiroshi Nagano
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Bridgman Anvil ◽  
High Pressure Apparatus

High-pressure freezing of cells in suspension for low-voltage scanning electron microscopy (LVSEM)

1991 ◽  
Vol 49 ◽  
pp. 64-65
Author(s):  
Marek Malecki ◽  
James Pawley ◽  
Hans Ris
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Low Voltage ◽  
Culture Media ◽  
Cell Structure ◽  
Freeze Substitution ◽  
Ice Crystal ◽  
High Pressure Freezing ◽  
Cell Culture Media ◽  
Voltage Scanning

The ultrastructure of cells suspended in physiological fluids or cell culture media can only be studied if the living processes are stopped while the cells remain in suspension. Attachment of living cells to carrier surfaces to facilitate further processing for electron microscopy produces a rapid reorganization of cell structure eradicating most traces of the structures present when the cells were in suspension. The structure of cells in suspension can be immobilized by either chemical fixation or, much faster, by rapid freezing (cryo-immobilization). The fixation speed is particularly important in studies of cell surface reorganization over time. High pressure freezing provides conditions where specimens up to 500μm thick can be frozen in milliseconds without ice crystal damage. This volume is sufficient for cells to remain in suspension until frozen. However, special procedures are needed to assure that the unattached cells are not lost during subsequent processing for LVSEM or HVEM using freeze-substitution or freeze drying. We recently developed such a procedure.

Prolonged Fixation Studies For Spaceflight

1973 ◽  
Vol 31 ◽  
pp. 332-333
Author(s):  
Robert Corbett ◽  
Delbert E. Philpott ◽  
Sam Black
Keyword(s):  
High Pressure ◽  
Living Systems ◽  
Prolonged Storage ◽  
Time Intervals ◽  
Early Signs ◽  
Large Numbers

Observation of subtle or early signs of change in spaceflight induced alterations on living systems require precise methods of sampling. In-flight analysis would be preferable but constraints of time, equipment, personnel and cost dictate the necessity for prolonged storage before retrieval. Because of this, various tissues have been stored in fixatives and combinations of fixatives and observed at various time intervals. High pressure and the effect of buffer alone have also been tried.Of the various tissues embedded, muscle, cartilage and liver, liver has been the most extensively studied because it contains large numbers of organelles common to all tissues (Fig. 1).

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