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Airtight metallic sealing at room temperature under small mechanical pressure.

ABSTRACT: Metallic seals can be resistant to air leakage, resistant to degradation under heat, and capable of carrying mechanical loads. Various technologies--such as organic solar cells and organic light emitting diodes--need, at least benefit from, such metallic seals. However, these technologies involve polymeric materials and can tolerate neither the high-temperature nor the high-pressure processes of conventional metallic sealing. Recent progress in nanorod growth opens the door to metallic sealing for these technologies. Here, we report a process of metallic sealing using small well-separated Ag nanorods; the process is at room temperature, under a small mechanical pressure of 9.0 MPa, and also in ambient. The metallic seals have an air leak rate of 1.1 × 10(-3) cm(3)atm/m(2)/day, and a mechanical shear strength higher than 8.9 MPa. This leak rate meets the requirements of organic solar cells and organic light emitting diodes.

SUBMITTER: Stagon SP

PROVIDER: S-EPMC3810669 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature

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Airtight metallic sealing at room temperature under small mechanical pressure.

Stagon Stephen P SP Huang Hanchen H

Scientific reports 20131029

Metallic seals can be resistant to air leakage, resistant to degradation under heat, and capable of carrying mechanical loads. Various technologies--such as organic solar cells and organic light emitting diodes--need, at least benefit from, such metallic seals. However, these technologies involve polymeric materials and can tolerate neither the high-temperature nor the high-pressure processes of conventional metallic sealing. Recent progress in nanorod growth opens the door to metallic sealing f ...[more]

PMID: 24166033

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Project description:Purpose: We aimed to provide a basis for the adaptive mechanism and a rich resource for the discovery and identification of novel genes involved in the cold stress response in Solenopsis japonica. Retinal transcriptome profiling (RNA-seq) to microarray and quantitative reverse transcription polymerase chain reaction (qRT–PCR) methods and to evaluate protocols for optimal high-throughput data analysis Methods: Solenopsis japonica was reared at lab condition, and incubated at 2 different temperature for 24h (9, and 25℃) under dark conditions. RNA was extracted using Trizol reagent and Illumina sequencing was performed at Macrogen. Illumina short reads were quality-filtered and Illumina-based de novo transcriptome assembly was performed. Differential Gene Expression Analysis was studied for different tempearture conditions. Results: Totally 89,657 unigenes was obtained which overall 43,375 were annotated with gene descriptions, gene ontology terms, and metabolic pathways. 86 GO functional sub-groups and 25 EggNOG terms resulted. DEGs with FC≥2 and FC≤-2, P-value<0.05 were screened and were compared at two different temperatures. We found 138 DEG down regulated and 271 DEG up regulated when the S. japonica incubated at 9 ℃ and compared with 25℃ treated group. Comparing transcriptome profiles for differential gene expression resulted various DE proteins and genes, including cytochrome P450, NADH dehydrogenase subunit 1, cuticle protein and HSP which have previously been reported to be involved in cold and high temperature resistance. GO analysis revealed that antioxidant activity up-regulated under high temperature stress. Conclusions: we compared the transcriptomes of S. japonica under normal room temperature and low-temperature using RNA-Seq technology based on the high-throughput sequencing. Comparative transcriptome analysis identified many genes and a large number of changes were discovered in metabolic pathway through the GO and KEGG enrichment analysis. Our data will facilitate further molecular investigations and genomic research. Many low-temperature significantly up-regulated genes were first identified in this study. These newly found genes may be important and necessary to S. japonica overwintering and its behavior for adaptation in new environment.

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Airtight metallic sealing at room temperature under small mechanical pressure.

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Airtight metallic sealing at room temperature under small mechanical pressure.

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