CHARACTERIZATION OF THE CO2-FLUID-SHALE INTERFACE VIA FEATURE RELOCATION USING FIELD-EMISSION SCANNING ELECTRON MICROSCOPY AND IN SITU INFRARED SPECTROSCOPY

2017 ◽  
Author(s):  
Barbara Kutchko ◽  
◽  
Angela Goodman ◽  
Matthew Dieterich ◽  
Mary K. Tkach ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Infrared Spectroscopy ◽  
Field Emission ◽  
In Situ Infrared Spectroscopy ◽  
Scanning Electron

scholarly journals Design and Characterization of Microscale Auxetic and Anisotropic Structures Fabricated by Multiphoton Lithography

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 446
Author(s):  
Ioannis Spanos ◽  
Zacharias Vangelatos ◽  
Costas Grigoropoulos ◽  
Maria Farsari
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Performance ◽  
Element Analysis ◽  
Mechanical Responses ◽  
Multiphoton Lithography ◽  
Anisotropic Structures ◽  
Scanning Electron

The need for control of the elastic properties of architected materials has been accentuated due to the advances in modelling and characterization. Among the plethora of unconventional mechanical responses, controlled anisotropy and auxeticity have been promulgated as a new avenue in bioengineering applications. This paper aims to delineate the mechanical performance of characteristic auxetic and anisotropic designs fabricated by multiphoton lithography. Through finite element analysis the distinct responses of representative topologies are conveyed. In addition, nanoindentation experiments observed in-situ through scanning electron microscopy enable the validation of the modeling and the observation of the anisotropic or auxetic phenomena. Our results herald how these categories of architected materials can be investigated at the microscale.

scholarly journals CHARACTERIZATION OF CELLULOSE AND CELLULOSE NITRATE NANOFILMSSE

FLORESTA ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 219
Author(s):  
Mayara Elita Carneiro ◽  
Marina Stygar Lopes ◽  
Anna Luisa Franco Baumel de Andrade ◽  
Silvana Nisgoski ◽  
Graciela Inês Bolzon de Muniz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Infrared Spectroscopy ◽  
Cellulose Nitrate ◽  
Mechanical Processing ◽  
Absorption Property ◽  
Kraft Pulps ◽  
Scanning Electron

The objective of this work was the characterization of cellulose and cellulose nitrate nanofilms from the mixture of Kraft pulps of  Pinus sp. and Eucalyptus sp. bleached. The production of nanocellulose was made by mechanical processing. To obtain the cellulose nitrate, the nitration was carried out in part of the produced nanocellulose. The characterizations were performed by means of scanning electron microscopy, medium infrared spectroscopy, tensile strength and absorption assay.  The results demonstrate that there was influence of  nitration in the characteristics of the films produced. The nanofilms of cellulose nitrate appear more interesting for the absorption property, indicating the use of this process for uses that require this characteristic.

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