Properties of TGS aqueous solution for crystal growth

Kroes, Roger L.; Reiss, Donald A.

doi:10.1016/0022-0248(84)90351-8

Cited by 40 publications

(4 citation statements)

References 6 publications

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“…I dp"tdTI $4'(: Idp ldT124'c IV. DISCUSSION OF THE METHOD The data obtained using this method are at least competitive with similar data obtained for a triglycine sulfate (TGS) crystal [13]. The main sources of errors in the density measurements were the minute water droplets adherent to the nylon wire during the diver calibration, air bubbles adherent to the diver surface in water or solutions, and the diver expansion, especially for highertemperature measurements.…”

Section: Methodsmentioning

confidence: 94%

Second-order transition in Rochelle-salt saturated solutions

Alexandru

1992

Phys. Rev. A

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A sui generis second-order transition in water solutions of Rochelle-salt crystal has been seen during measurements of both the solubility and solution densities versus temperature. Both the volumeexpansion coefficients and the temperature differential of solution densities for several compositions along the solubility curve present a jump discontinuity around a saturation temperature of 24'C. Electrical measurements revealed a small peak in the dielectric constant, showing a minute ferroelectric component of solute near 24'C in solution. The loss tangents of solution and the dissolution enthalpy (drawn from the solubility curve) show other characteristics. The excess volume of solute vanishes around 31'C, showing an "ideal" behavior of solution in this region. All data seem to indicate the tartrate molecule NaKC4H406 associates with the four water molecules in solution, just like the water molecules undergoing crystallization. This quasicrystalline structure of the solute is stable in solutions up to about 40'C.A tentative interpretation as a critical phenomenon is made for the volume-expansion coefficient. This response function with a cusplike singularity at 24 C has a critical point exponent of about -,. A oneto-one correspondence within four temperature ranges (between 16 -18'C and 58'C), of the properties of the crystal and solute Rochelle salt, has been experimentally proved in five types of measurements.

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Section: Methodsmentioning

confidence: 94%

Second-order transition in Rochelle-salt saturated solutions

Alexandru

1992

Phys. Rev. A

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“…The saturation temperature was set around 40 1C in the ferroelectric phase. The actual starting temperature was determined by the close observation of the shadow graph image (the Schlieren image) around a small test crystal suspended in the solution [34]. As the image very clearly delineated the presence of a growth or dissolution plume from the crystal, the saturation temperature was accurately determined.…”

Section: Crystal Growthmentioning

confidence: 99%

“…Four seeds were suspended in the solution by fine nylon threads from the tips of cross-shaped Teflon piece. In order to avoid the deformation of crystal form due to the buoyancy driven convection of concentration depletion layer rising along the growing surface [34], it is necessary to move the seed crystals in the solution. The teflon piece was rotated at 10 rpm, and the rotation was reversed at half-minute intervals.…”

Section: Crystal Growthmentioning

confidence: 99%

Growth and ferroelectric properties of l-, d-, and dl-methionine-doped triglycine sulfate crystals

Kikuta

Yamazaki

Nakatani

2010

Journal of Crystal Growth

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“…[ 10 ] It has been demonstrated that the convection‐free mass transport occurring in microgravity conditions can greatly favor the synthesis of materials with larger crystalline domain sizes, lower defect densities and new morphologies. [ 11 ] However, the high costs and restricted access to experimentation in space have hindered efforts to study and control the engineering of crystalline porous molecular frameworks under these synthetic conditions. Herein, we show that microfluidic devices can simulate on Earth the effect of the microgravity in space experimentation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 2D Porous Crystalline Materials in Simulated Microgravity

et al. 2021

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To date, crystallization studies conducted in space laboratories, which are prohibitively costly and unsuitable to most research laboratories, have shown the valuable effects of microgravity during crystal growth and morphogenesis. Herein, an easy and highly efficient method is shown to achieve space‐like experimentation conditions on Earth employing custom‐made microfluidic devices to fabricate 2D porous crystalline molecular frameworks. It is confirmed that experimentation under these simulated microgravity conditions has unprecedented effects on the orientation, compactness and crack‐free generation of 2D porous crystalline molecular frameworks as well as in their integration and crystal morphogenesis. It is believed that this work will provide a new “playground” to chemists, physicists, and materials scientists that desire to process unprecedented 2D functional materials and devices.

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Properties of TGS aqueous solution for crystal growth

Cited by 40 publications

References 6 publications

Second-order transition in Rochelle-salt saturated solutions

Second-order transition in Rochelle-salt saturated solutions

Growth and ferroelectric properties of l-, d-, and dl-methionine-doped triglycine sulfate crystals

Synthesis of 2D Porous Crystalline Materials in Simulated Microgravity

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