Characterization of Resistivity of Sb2S3 Semiconductor Nanowires by Conductive AFM and In Situ Methods

Conductive AFM and in situ methods were used to determine contact resistance and resistivity of individual Sb2S3 nanowires. Nanowires were deposited on oxidized Si surface for in situ measurements and on Si surface with macroelectrodes for conductive AFM (C-AFM) measurements. Contact resistance was determined by measurement of I(V) characteristics at different distances from the nanowire contact with the macroelectrode and resistivity of nanowires was determined. Sb2S3 is a soft material with low adhesion force to the surface and therefore special precautions were taken during measurements.

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A Novel In-Situ Nanoindentation Characterization of Phase Transforming Materials

MRS Proceedings ◽

10.1557/opl.2015.198 ◽

2015 ◽

Vol 1754 ◽

pp. 19-24

Author(s):

A. Alipour Skandani ◽

R. Ctvrtlik ◽

M. Al-Haik

Keyword(s):

Mechanical Properties ◽

Phase Transformation ◽

Creep Compliance ◽

Physical And Mechanical Properties ◽

In Situ Methods ◽

Negative Creep ◽

Nanoindentation Instrument ◽

Structural Instabilities

ABSTRACTMaterials with different allotropes can undergo one or more phase transformations based on the changes in the thermodynamic states. Each phase is stable in a certain temperature/pressure range and can possess different physical and mechanical properties compared to the other phases. The majority of material characterizations have been carried out for materials under equilibrium conditions where the material is stabilized in a certain phase and a lesser portion is devoted for onset of transformation. Alternatively, in situ measurements can be utilized to characterize materials while undergoing phase transformation. However, most of the in situ methods are aimed at measuring the physical properties such as dielectric constant, thermal/electrical conductivity and optical properties. Changes in material dimensions associated with phase transformation, makes direct measurement of the mechanical properties very challenging if not impossible. In this study a novel non-isothermal nanoindentation technique is introduced to directly measure the mechanical properties such as stiffness and creep compliance of a material at the phase transformation point. Single crystal ferroelectric triglycine sulfate (TGS) was synthetized and tested with this method using a temperature controlled nanoindentation instrument. The results reveal that the material, at the transformation point, exhibits structural instabilities such as negative stiffness and negative creep compliance which is in agreement with the findings of published works on the composites with ferroelectric inclusions.

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Intrinsic characterization of structure-borne sound sources and isolators from in-situ measurements

The Journal of the Acoustical Society of America ◽

10.1121/1.4806164 ◽

2013 ◽

Vol 133 (5) ◽

pp. 3462-3462

Author(s):

Andy Moorhouse ◽

Andy Elliott ◽

Yong Hwa Heo

Keyword(s):

In Situ Measurements ◽

Sound Sources ◽

Intrinsic Characterization

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Characterization of sub-seismic resolution structural diagenetic heterogeneities in porous sandstones: Combining ground-penetrating radar profiles with geomechanical and petrophysical in situ measurements (Northern Apennines, Italy)

Marine and Petroleum Geology ◽

10.1016/j.marpetgeo.2020.104375 ◽

2020 ◽

Vol 117 ◽

pp. 104375 ◽

Cited By ~ 2

Author(s):

Leonardo Del Sole ◽

Marco Antonellini ◽

Antonino Calafato

Keyword(s):

Ground Penetrating Radar ◽

In Situ Measurements ◽

Northern Apennines ◽

Seismic Resolution ◽

Ground Penetrating

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Characterization of Water and Energy Consumptions at the End Use Level in Rural and Urban Environments: Preliminary Results of the ENERWAT Project

Urban Science ◽

10.3390/urbansci3010008 ◽

2019 ◽

Vol 3 (1) ◽

pp. 8

Author(s):

Cristina Matos ◽

António Cunha ◽

Francisco Pereira ◽

Arminda Gonçalves ◽

Elisabete Silva ◽

...

Keyword(s):

Energy Consumption ◽

Urban Environments ◽

In Situ Measurements ◽

Joint Analysis ◽

Preliminary Results ◽

Rural And Urban ◽

Energy Consumptions ◽

End Use

The characterization of water and energy consumptions is essential in order to define strategies for their rational use. The way these resources are used in households is the path for efficient and rational management, interdependent from each other. It is believed that there are significant differences between the patterns of water and energy consumption in rural and urban areas, where influencing factors should also be identified. This article aims to provide some preliminary results of a research project named ENERWAT, with the main goal to characterize the relation between water and energy consumption at the end use level for urban and rural environments. One of the goals of the aforementioned project was the design, application, and results analysis of a survey, in order to find the main differences in the water and energy consumptions at the end use level and the factors that influence it in urban and rural households. A total of 245 households participated in the research during 2016 (110 urban dwellings and 135 rural), responding to questions on their family composition, dwellings characterization, water and energy consumption habits, and conservation behaviors of these resources. The project also includes the instrumentation and monitoring of dwellings in rural and urban environments to quantify the water consumption and related energy consumption. This stage is still in progress and includes in situ measurements of nine different households (four in rural and five in urban environments) during at least one year. In this article, some of the results obtained by the survey application and the in situ measurements are presented. Despite the large number of data and the associated complexity, it can be concluded that the joint analysis of the results allows identification of a connection between water and energy consumption, as well as a household’s consumption patterns.

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