Ching‐Hua Su
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View article: Wet-chemical approach to the synthesis of iron whitlockite (Ca<sub>18</sub>Fe<sub>2</sub>(HPO<sub>4</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>12</sub>) <i>via</i> a dissolution–precipitation process under hydrothermal conditions
Wet-chemical approach to the synthesis of iron whitlockite (Ca<sub>18</sub>Fe<sub>2</sub>(HPO<sub>4</sub>)<sub>2</sub>(PO<sub>4</sub>)<sub>12</sub>) <i>via</i> a dissolution–precipitation process under hydrothermal conditions Open
Iron whitlockite (Fe-WH, Ca 18 Fe 2 (HPO 4 ) 2 (PO 4 ) 12 ) powder was successfully synthesized by a wet-chemical approach. The synthesis was performed through a dissolution–precipitation process under hydrothermal conditions.
View article: Flux growth of optical sensor zinc selenide crystals
Flux growth of optical sensor zinc selenide crystals Open
Binary and ternary selenide crystals have been proven as multifunctional for optical sensors and laser applications. The aim of this study was to evaluate reactive flux growth process of the doped zinc selenide crystals and compared with b…
View article: Dielectric energy storage materials for space sensors: effect of processing on the performance
Dielectric energy storage materials for space sensors: effect of processing on the performance Open
This paper explores the development of innovative materials for the dielectric energy storage for space components. The CaCu3Ti4O12 or CCTO belonging to perovskite family is of interest due to its colossal dielectric constant. It was demon…
View article: Comparative Study of Bulk and Nanoengineered Doped ZnSe
Comparative Study of Bulk and Nanoengineered Doped ZnSe Open
Chromium- and cobalt-doped zinc selenide nanoparticles were synthesized using a low-temperature reactive solution growth method. The morphological and optical characteristics were compared to those of doped zinc selenide (ZnSe) bulk crysta…
View article: Semiconductor to metal transition in the solids/melts of Te and pseudo-binary of Hg1−xCdxTe for x = 0, 0.1, and 0.2
Semiconductor to metal transition in the solids/melts of Te and pseudo-binary of Hg1−xCdxTe for x = 0, 0.1, and 0.2 Open
This paper reports the experimentally measured thermal and electrical conductivities from which the Lorenz numbers as functions of temperature were derived for the solids and melts of elemental Te and samples of Hg1−xCdxTe of x = 0, 0.1, a…
View article: Effect of Doping on the Electrical Characteristics of ZnSe
Effect of Doping on the Electrical Characteristics of ZnSe Open
The effect of sulfur, iron, and chromium doping on the electrical characteristics of ZnSe single crystals was studied. The crystals, grown by the physical vapor transport method (PVT) at NASA Marshall Space Flight Center, were characterize…
View article: Effect of additives: γ-Ray sensors based on ionizing organic nanocomposites
Effect of additives: γ-Ray sensors based on ionizing organic nanocomposites Open
We have developed ionizing organic based composites which have demonstrated great promise for radiation sensing. Nickel oxide has been proven as an active material for detecting high energy radiation. The oxidation state of unusual oxides …
View article: Thermal stability of melt grown Tl-doped PbTeSe material for thermoelectric applications
Thermal stability of melt grown Tl-doped PbTeSe material for thermoelectric applications Open
Although the thermoelectric performance of PbTe-based materials, processed by hot-pressing, has recently been improved, there are concerns about its thermal stability. On the other hand, during the process of melt crystal growth the materi…
View article: Effect of pH on the morphology of kidney stones
Effect of pH on the morphology of kidney stones Open
The process for the formation of kidney stone is very complex phenomena and has some similarity to the crystal growth from a solution. It is very much dependent on the acidity pH of the fluids. This pH variation affects the content and amo…
View article: Design and growth of novel compounds for radiation sensors: multinary chalcogenides
Design and growth of novel compounds for radiation sensors: multinary chalcogenides Open
Increasing threats of radiological weapons have revitalized the researches for low cost large volume -ray and neutron ray sensors In the past few years we have designed and grown ternary and quaternary lead and thallium chalcogenides and l…
View article: Flight Experiments of Physical Vapor Transport of ZnSe: Growth of Crystals in Various Convective Conditions
Flight Experiments of Physical Vapor Transport of ZnSe: Growth of Crystals in Various Convective Conditions Open
A low gravity material experiment will be performed in the Material Science Research Rack (MSRR) on International Space Station (ISS). The flight experiment will conduct crystal growths of ZnSe and related ternary compounds, such as ZnSeS …
View article: Thermal conductivity, electrical conductivity, and thermoelectric properties of CdTe and Cd0.8Zn0.2Te crystals between room temperature and 780oC
Thermal conductivity, electrical conductivity, and thermoelectric properties of CdTe and Cd0.8Zn0.2Te crystals between room temperature and 780oC Open
The thermal conductivity, electrical conductivity, and Seebeck coefficient of a vapor-grown CdTe and two melt-grown Cd0.8Zn0.2Te crystals, including In-doped CZT-30 and un-doped CZT-34 samples, were measured from room temperature to 780oC.…