Switching THz Resonances by Mechanical Bending

AbstractTo produce realistic test specimens with realistic flaws, it is necessary to develop appropriate procedure for corrosion flaw production. Tested specimens are made from steels commonly used in power plants, such as carbon steels, stainless steels and their dissimilar weldments. In this study, corrosion damage from NaCl water solution and NaCl water mist are compared. Specimens were tested with and without mechanical bending stress. The corrosion processes produced plane, pitting and galvanic corrosion. On dissimilar weldments galvanic corrosion was observed and resulted to the deepest corrosion damage. Deepest corrosion flaws were formed on welded samples. The corrosion rate was also affected by the solution flow in a contact with the specimens, which results in a corrosion-erosive wear. Produced flaws are suitable as natural crack initiators or as realistic corrosion flaws in test specimens.

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Cs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3 based flexible perovskite light-emitting devices with excellent mechanical bending durability

Chemical Physics Letters ◽

10.1016/j.cplett.2019.03.025 ◽

2019 ◽

Vol 723 ◽

pp. 33-38 ◽

Cited By ~ 1

Author(s):

Minhuan Wang ◽

Yulin Feng ◽

Qingshun Dong ◽

Jiming Bian ◽

Chen Wang ◽

...

Keyword(s):

Light Emitting ◽

Light Emitting Devices ◽

Mechanical Bending

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Flexoelectricity and transport properties of phosphorene nanoribbons under mechanical bending

Physical Review B ◽

10.1103/physrevb.103.235406 ◽

2021 ◽

Vol 103 (23) ◽

Author(s):

T. Pandey ◽

L. Covaci ◽

M. V. Milošević ◽

F. M. Peeters

Keyword(s):

Transport Properties ◽

Mechanical Bending

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Digitally Patterned Mesoporous Carbon Nanostructures of Colorless Polyimide for Transparent and Flexible Micro-Supercapacitor

Energies ◽

10.3390/en14092547 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2547

Author(s):

Hyeonwoo Kim ◽

Suwon Hwang ◽

Taeseung Hwang ◽

Jung Bin In ◽

Junyeob Yeo

Keyword(s):

Carbon Nanostructures ◽

Specific Area ◽

Bending Test ◽

Chemical Compositions ◽

Carbon Structure ◽

Carbon Structures ◽

Direct Laser ◽

Mechanical Bending ◽

Minimal Reduction ◽

High Flexibility

Here, we demonstrate the fabrication of a flexible and transparent micro-supercapacitor (MSC), using colorless polyimide (CPI) via a direct laser writing carbonization (DLWC) process. The focused laser beam directly carbonizes the CPI substrate and generates a porous carbon structure on the surface of the CPI substrate. Fluorine, which is one of the chemical compositions of CPI, can enhance the specific area and the conductivity of the carbon electrode by creating micropores in carbon structures during carbonization. Thus, the fabricated carbonized CPI-based MSC shows enhanced specific capacitance (1.20 mF at 10 mV s−1) and better transmittance (44.9%) compared to the conventional PI-based MSC. Additionally, the fabricated carbonized CPI-based MSC shows excellent cyclic performance with minimal reduction (<~10%) in 3000 cycles and high capacitance retention under mechanical bending test conditions. Due to its high flexibility, transparency, and capacitance, we expect that carbonized CPI-based MSC can be further applied to various flexible and transparent applications.

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The seasonal activity and the effect of mechanical bending and wounding on the PtCOMT promoter in Betula pendula Roth

Plant Cell Reports ◽

10.1007/s00299-007-0331-x ◽

2007 ◽

Vol 26 (8) ◽

pp. 1205-1214 ◽

Cited By ~ 9

Author(s):

Heidi Tiimonen ◽

Hely Häggman ◽

Chung-Jui Tsai ◽

Vincent Chiang ◽

Tuija Aronen

Keyword(s):

Betula Pendula ◽

Seasonal Activity ◽

Betula Pendula Roth ◽

Mechanical Bending

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Moisture-Assisted Formation of High-Quality Silver Nanowire Transparent Conductive Films with Low Junction Resistance

Coatings ◽

10.3390/coatings11060671 ◽

2021 ◽

Vol 11 (6) ◽

pp. 671

Author(s):

Lipeng Zhou ◽

Yuehui Hu ◽

Hao Gao ◽

Youliang Gao ◽

Wenjun Zhu ◽

...

Keyword(s):

Indium Tin Oxide ◽

Capillary Condensation ◽

Silver Nanowire ◽

Environmental Stability ◽

Bending Test ◽

Commercial Application ◽

Junction Resistance ◽

Transparent Conductive Film ◽

Conductive Film ◽

Mechanical Bending

Silver nanowire (AgNWs) transparent conductive film (TCF) is considered to be the most favorable material to replace indium tin oxide (ITO) as the next-generation transparent conductive film. However, the disadvantages of AgNWs, such as easy oxidation and high wire-wire junction resistance, dramatically limit its commercial application. In this paper, moisture treatment was adopted, and water was dripped on the surface of AgNWs film or breathed on the surface so that the surface was covered with a layer of water vapor. The morphology of silver nanowire mesh nodes is complex, and the curvature is large. According to the capillary condensation theory, water molecules preferentially condense near the geometric surface with significant curvature. The capillary force is generated, making the wire-wire junction of AgNWs mesh bond tightly, resulting in good ohmic contact. The experimental results show that AgNWs-TCF treated by moisture has better conductivity, with an average sheet resistance of 20 Ω/sq and more uniform electrical properties. The bending test and adhesion test showed that AgNWs-TCF treated by moisture still exhibited good mechanical bending resistance and environmental stability.

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Evaluation of elastic, elastic-plastic properties of thin Pt wire by mechanical bending test

Applied Physics A ◽

10.1007/s00339-010-6020-6 ◽

2010 ◽

Vol 103 (2) ◽

pp. 493-496 ◽

Cited By ~ 4

Author(s):

S. K. Deb Nath ◽

Hironori Tohmyoh ◽

M. A. Salam Akanda

Keyword(s):

Bending Test ◽

Plastic Properties ◽

Elastic Plastic ◽

Mechanical Bending

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The peculiarities of mechanical bending of silicon wafers after diverse manufacturing operations

Microelectronics Journal ◽

10.1016/s0026-2692(03)00100-9 ◽

2003 ◽

Vol 34 (5-8) ◽

pp. 515-519 ◽

Cited By ~ 1

Author(s):

H. Bidadi ◽

S. Sobhanian ◽

M. Mazidi ◽

Sh. Hasanli ◽

S. Khorram

Keyword(s):

Silicon Wafers ◽

Manufacturing Operations ◽

Mechanical Bending

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Flexible silicon nanowires sensor for acetone detection on plastic substrates

Nanotechnology ◽

10.1088/1361-6528/ac46b3 ◽

2021 ◽

Author(s):

Kuibo Lan ◽

Zhi Wang ◽

Xiaodong Yang ◽

Junqing Wei ◽

Yuxiang Qin ◽

...

Keyword(s):

Silicon Nanowires ◽

High Performance ◽

Underlying Mechanism ◽

Environmental Safety ◽

Cmos Process ◽

Plastic Substrates ◽

Irregular Shapes ◽

Good Potential ◽

Mechanical Bending ◽

Acetone Detection

Abstract Acetone commonly exists in daily life and is harmful to human health, therefore the convenient and sensitive monitoring of acetone is highly desired. In addition, flexible sensors have the advantages of light-weight, conformal attachable to irregular shapes, etc. In this study, we fabricated high performance flexible silicon nanowires (SiNWs) sensor for acetone detection by transferring the monocrystalline Si film and metal-assisted chemical etching method on polyethylene terephthalate (PET). The SiNWs sensor enabled detection of gaseous acetone with a concentration as low as 0.1 parts per million (ppm) at flat and bending states. The flexible SiNWs sensor was compatible with the CMOS process and exhibited good sensitivity, selectivity and repeatability for acetone detection at room temperature. The flexible sensor showed performance improvement under mechanical bending condition and the underlying mechanism was discussed. The results demonstrated the good potential of the flexible SiNWs sensor for the applications of wearable devices in environmental safety, food quality, and healthcare.

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Investigation of electric field effect on size-dependent bending analysis of functionally graded porous shear and normal deformable sandwich nanoplate on silica Aerogel foundation

Journal of Sandwich Structures & Materials ◽

10.1177/1099636217721405 ◽

2017 ◽

Vol 21 (8) ◽

pp. 2700-2734 ◽

Cited By ~ 12

Author(s):

A Ghorbanpour Arani ◽

MH Zamani

Keyword(s):

Young’S Modulus ◽

Silica Aerogel ◽

Young's Modulus ◽

Nonlocal Parameter ◽

Core Layer ◽

Functionally Graded ◽

Electric Field Effect ◽

Governing Equations ◽

Model Foundation ◽

Mechanical Bending

In the present research electro-mechanical bending behavior of sandwich nanoplate with functionally graded porous core and piezoelectric face sheets is carried out. Vlasov’s model foundation is utilized to model the silica Aerogel foundation. Two functions are considered for nonuniform variation of material properties of the core layer along the thickness direction such as Young’s modulus, shear modulus, and density. The governing equations are deduced from Hamilton’s principle based on sinusoidal shear and normal deformation theory. In order to solve seven governing equations, an iterative technique is accomplished. After all, deflection and stresses are verified with corresponding literatures. Eventually, the numerical results reveal that applied voltage, plate aspect ratio, thickness ratio, nonlocal parameter, porosity index, Young’s modulus, and height of silica Aerogel foundation have substantial effects on the electro-mechanical bending response of functionally graded porous sandwich nanoplate.

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