Critical Crystal Growth of Graphene on Dielectric Substrates at Low Temperature for Electronic Devices

Abstract SOMERS LTA Copper is a wrought copper foil that can be annealed at 350 F in 15 minutes to the full-soft condition; its use simplifies the manufacture of printed circuits (LTA = Low-Temperature Annealable). LTA Copper is especially useful for foil weights up to and including one ounce per square foot (0.0014-inch thick) for laminating to high-temperature dielectric substrates. This datasheet provides information on composition, physical properties, and elasticity as well as fatigue. It also includes information on forming, heat treating, and machining. Filing Code: Cu-407. Producer or source: Olin Corporation.

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Elucidation of the Crystal Growth Characteristics of SnO2 Nanoaggregates Formed by Sequential Low-Temperature Sol-Gel Reaction and Freeze Drying

Nanomaterials ◽

10.3390/nano11071738 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1738

Author(s):

Saeid Vafaei ◽

Alexander Wolosz ◽

Catlin Ethridge ◽

Udo Schnupf ◽

Nagisa Hattori ◽

...

Keyword(s):

Crystal Growth ◽

Low Temperature ◽

Photoelectron Spectroscopy ◽

High Performance ◽

Freeze Drying ◽

Sno2 Nanoparticles ◽

Sol Gel ◽

Functional Materials ◽

Cost Effective ◽

High Concentration

SnO2 nanoparticles are regarded as attractive, functional materials because of their versatile applications. SnO2 nanoaggregates with single-nanometer-scale lumpy surfaces provide opportunities to enhance hetero-material interfacial areas, leading to the performance improvement of materials and devices. For the first time, we demonstrate that SnO2 nanoaggregates with oxygen vacancies can be produced by a simple, low-temperature sol-gel approach combined with freeze-drying. We characterize the initiation of the low-temperature crystal growth of the obtained SnO2 nanoaggregates using high-resolution transmission electron microscopy (HRTEM). The results indicate that Sn (II) hydroxide precursors are converted into submicrometer-scale nanoaggregates consisting of uniform SnO2 spherical nanocrystals (2~5 nm in size). As the sol-gel reaction time increases, further crystallization is observed through the neighboring particles in a confined part of the aggregates, while the specific surface areas of the SnO2 samples increase concomitantly. In addition, X-ray photoelectron spectroscopy (XPS) measurements suggest that Sn (II) ions exist in the SnO2 samples when the reactions are stopped after a short time or when a relatively high concentration of Sn (II) is involved in the corresponding sol-gel reactions. Understanding this low-temperature growth of 3D SnO2 will provide new avenues for developing and producing high-performance, photofunctional nanomaterials via a cost-effective and scalable method.

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Layer‐By‐Layer Printing Strategy for High‐Performance Flexible Electronic Devices with Low‐Temperature Catalyzed Solution‐Processed SiO 2

Small Methods ◽

10.1002/smtd.202100263 ◽

2021 ◽

pp. 2100263

Author(s):

Qingqing Sun ◽

Tianqi Gao ◽

Xiaomeng Li ◽

Wanli Li ◽

Xiaoqian Li ◽

...

Keyword(s):

Low Temperature ◽

High Performance ◽

Electronic Devices ◽

Layer By Layer ◽

Solution Processed ◽

Flexible Electronic ◽

Flexible Electronic Devices

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Highly Tough, Freezing-Tolerant, Healable and Thermoplastic Starch/Poly(vinyl alcohol) Organohydrogels for Flexible Electronic Devices

Journal of Materials Chemistry A ◽

10.1039/d1ta04336f ◽

2021 ◽

Author(s):

Jing Lu ◽

Jianfeng Gu ◽

Oudong Hu ◽

Yunhan Fu ◽

Dezhan Ye ◽

...

Keyword(s):

Low Temperature ◽

Electronic Devices ◽

Future Generation ◽

Thermoplastic Starch ◽

Poly Vinyl Alcohol ◽

Temperature Resistance ◽

Large Application ◽

Conductive Hydrogels ◽

Low Temperature Resistance ◽

Application Prospects

The conductive hydrogels have found large application prospects in fabricating flexible multifunctional electronic devices for future-generation wearable human-machine interactions. However, the inferior mechanical strength, low temperature resistance, and non-recyclability induced...

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Synthesis and crystallogenesis at low temperature of Fe(III)-smectites by evolution of coprecipitated gels: experiments in partially reducing conditions

Clay Minerals ◽

10.1180/claymin.1986.021.5.02 ◽

1986 ◽

Vol 21 (5) ◽

pp. 861-877 ◽

Cited By ~ 29

Author(s):

A. Decarreau ◽

D. Bonnin

Keyword(s):

Crystal Growth ◽

Iron Oxide ◽

Low Temperature ◽

Oxide Phase ◽

Octahedral Sheet ◽

Reducing Conditions ◽

Iron Oxide Phase

AbstractSyntheses of ferric smectites were performed at low temperature (75° C by aging coprecipitated gels of silica and Fe2+-sulphate under initially reducing then oxidizing conditions. Under strictly reducing conditions only nuclei of a trioctahedral ferrous stevensite were observed and crystal growth did not take place. When a spontaneous oxidization, in contact with air, was effected, the ferrous smectite nuclei transformed rapidly into a ferric, nontronite-like, smectite. Crystallogenesis of the ferric smectite was studied by XRD, IR, DTA, Mössbauer and EPR spectroscopies. The end-synthesis smectite contained only Fe3+ions, all located in the octahedral sheet. This clay was mixed with a cryptocrystalline iron oxide phase containing one-third of the iron atoms and undetectable by XRD.

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