Solid-State Ligand-Driven Light-Induced Spin Change at Ambient Temperatures in Bis(dipyrazolylstyrylpyridine)iron(II) Complexes

2012 ◽  
Vol 51 (9) ◽  
pp. 5188-5198 ◽  
Author(s):  
Kazuhiro Takahashi ◽  
Yuta Hasegawa ◽  
Ryota Sakamoto ◽  
Michihiro Nishikawa ◽  
Shoko Kume ◽  
...  
Keyword(s):  
Solid State ◽  
Ambient Temperatures

Direct Solid-State Electrochemical Synthesis of Silicon Tetrachloride from Silica at Ambient Temperatures and Pressures

2019 ◽  
Vol 28 (16) ◽  
pp. 45-56 ◽  
Author(s):  
Bambang Ari-Wahjoedi ◽  
Khairul Fuad ◽  
M. Ariefin
Keyword(s):  
Solid State ◽  
Electrochemical Synthesis ◽  
Silicon Tetrachloride ◽  
Ambient Temperatures ◽  
Direct Solid

Solid-State Luminescent Color Displays

1994 ◽  
Vol 345 ◽  
Author(s):  
Edward J. A. Pope
Keyword(s):  
Solid State ◽  
New Technology ◽  
Sol Gel ◽  
Lanthanide Ions ◽  
Flat Panel Displays ◽  
Flat Panel ◽  
Excitation Light ◽  
Ambient Temperatures ◽  
Color Displays ◽  
Total Sales

AbstractBy the end of 1994, flat-panel displays for lap-top computers and televisions will exceed $4.0 billion in total sales. Currently, most such displays are based entirely upon an advanced liquid crystal technology requiring several precisely aligned LC layers. A new technology for flat-panel displays, based upon the solid-state luminescence of sol-gel derived microspheres has been proposed. Silica gel-derived microspheres can be prepared at near ambient temperatures, doped with either optically-active organic dye molecules or lanthanide ions. Microspheres doped to give red, blue, and green luminescence can be arranged in a pixel pattern to form the basis of a display screen. A single monochrome LC layer is used to modulate the excitation light, or pump source, that activates the fluorescence of each pixel.

One-Step Solid-State Reactions at Ambient Temperatures—A Novel Approach to Nanocrystal Synthesis

1999 ◽  
Vol 11 (11) ◽  
pp. 941-942 ◽  
Author(s):  
Xiang R. Ye ◽  
Dian Z. Jia ◽  
Jian Q. Yu ◽  
Xin Q. Xin ◽  
Ziling Xue
Keyword(s):  
Solid State ◽  
Solid State Reactions ◽  
Ambient Temperatures ◽  
Novel Approach ◽  
Nanocrystal Synthesis ◽  
One Step

Solid state refrigeration: Cooling and refrigeration using crystalline phase changes in metal alloys

2004 ◽  
Vol 218 (10) ◽  
pp. 1175-1179 ◽  
Author(s):  
J Quarini ◽  
A Prince
Keyword(s):  
Titanium Alloy ◽  
Solid State ◽  
Structural Changes ◽  
Large Change ◽  
Nickel Titanium ◽  
Phase Changes ◽  
Metal Alloys ◽  
Ambient Temperatures ◽  
Innovative Method ◽  
Mechanical Actuation

The well-known fact that a phase change is normally accompanied by a relatively large change in internal energy is explored and is used to develop an innovative method of achieving refrigerative effects in solid state metal alloys. Applying a cyclic mechanical stress in certain materials can induce crystalline structural changes, with accompanying absorption or release of heat. Simple experiments are reported with a particular nickel-titanium alloy where temperature drops well below 10 °C of ambient were achieved. The experimental work was undertaken at ambient temperature and temperature excursions of + 16 and -14 °C of ambient temperatures were measured. These temperature excursions occurred in a material with a density of over 6000 kg/m3. Ways in which the concept of ‘solid state refrigeration’ using mechanical actuation are suggested and partially examined.

Sensing characteristics of a solid-state ammonia sensor at ambient temperatures

1988 ◽  
Vol 27 (3) ◽  
pp. 175-179 ◽  
Author(s):  
N Miura
Keyword(s):  
Solid State ◽  
Ammonia Sensor ◽  
Ambient Temperatures ◽  
Sensing Characteristics

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

Structure-property relations of liquid crystalline polymers

1987 ◽  
Vol 45 ◽  
pp. 460-463
Author(s):  
Linda C. Sawyer
Keyword(s):  
Solid State ◽  
Liquid Crystalline ◽  
Structural Model ◽  
Crystalline Polymer ◽  
Liquid Crystalline Polymers ◽  
Mechanical Anisotropy ◽  
Structure Property ◽  
Preparation Methods ◽  
Crystalline Polymers ◽  
Extended Chain

Recent liquid crystalline polymer (LCP) research has sought to define structure-property relationships of these complex new materials. The two major types of LCPs, thermotropic and lyotropic LCPs, both exhibit effects of process history on the microstructure frozen into the solid state. The high mechanical anisotropy of the molecules favors formation of complex structures. Microscopy has been used to develop an understanding of these microstructures and to describe them in a fundamental structural model. Preparation methods used include microtomy, etching, fracture and sonication for study by optical and electron microscopy techniques, which have been described for polymers. The model accounts for the macrostructures and microstructures observed in highly oriented fibers and films.Rod-like liquid crystalline polymers produce oriented materials because they have extended chain structures in the solid state. These polymers have found application as high modulus fibers and films with unique properties due to the formation of ordered solutions (lyotropic) or melts (thermotropic) which transform easily into highly oriented, extended chain structures in the solid state.

Microstructural Variations in Melt-Spun Rapidly Solidified Ribbons

1985 ◽  
Vol 43 ◽  
pp. 54-55
Author(s):  
L. A. Bendersky ◽  
W. J. Boettinger
Keyword(s):  
Solid State ◽  
Processing Parameters ◽  
Heat Extraction ◽  
Solid State Reactions ◽  
Careful Examination ◽  
Ion Milling ◽  
Melt Spun ◽  
Wheel Side ◽  
Rapidly Solidified ◽  
Heat Extraction Rate

Rapid solidification produces a wide variety of sub-micron scale microstructure. Generally, the microstructure depends on the imposed melt undercooling and heat extraction rate. The microstructure can vary strongly not only due to processing parameters changes but also during the process itself, as a result of recalescence. Hence, careful examination of different locations in rapidly solidified products should be performed. Additionally, post-solidification solid-state reactions can alter the microstructure.The objective of the present work is to demonstrate the strong microstructural changes in different regions of melt-spun ribbon for three different alloys. The locations of the analyzed structures were near the wheel side (W) and near the center (C) of the ribbons. The TEM specimens were prepared by selective electropolishing or ion milling.

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