Material Characterization Techniques and Applications

Ortega, Euth Ortiz; Hosseinian, Hamed; Meza, Ingrid Berenice Aguilar; López, María José; Vera, Andrea Rodríguez; Hosseini, Samira

doi:10.1007/978-981-16-9569-8

Cited by 4 publications

(3 citation statements)

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“…The analytical methods which are currently used for studying kinetics of different physical, chemical and biological processes have many limitations [17][18][19][20][21][22][23]: most methods work for only specific types of materials; sample preparation often demand multiple and complex steps to be followed; real time, in situ tracking of a process continues to remains a challenge; importantly most methods are found inadequate when the event happens at a location that is not easily accessible to direct measurement. To overcome these limitations, we have demonstrated here the application of Elastocapillary effect [1,2], which is essentially based on measurement of deformation of a soft solid, that occurs because of change in interfacial energy of a solid-liquid interface.…”

Section: Discussionmentioning

confidence: 99%

“…Vis Spectroscopy [10], analysis of particle size distribution using dynamic light scattering (DLS) [11], and/or imaging methods such as Transmission Electron Microscopy (TEM) [12][13][14] and AFM [15,16]. UV Vis spectroscopy is limited by light scattering, interference from multiple absorbing species, opaque samples and particle concentration [17][18][19]. Furthermore, UV wavelength selectors are not perfect, and a small amount of light from a wide wavelength range can still be transmitted, resulting in significant measurement errors.…”

Section: E mentioning

confidence: 99%

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Studying Kinetics of a Surface Reaction using Elastocapillary Effect

Singh

Kumar

Ghatak

2023

Preprint

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Hypothesis : When a liquid is inserted inside a microfluidic channel, embedded within a soft elastomeric layer, e.g. poly(dimethylsiloxane) (PDMS), the thin wall of the channel deforms, due to change in solid-liquid interfacial energy. This phenomenon is known as Elastocapillary effect. The evolution of a new species at this interface too alters the interfacial energy and consequently the extent of deformation. Hence, it should be possible to monitor dynamics of physical and chemical events occurring near to the solid-liquid interface by measuring this deformation by a suitable method, e.g., optical profilometer. Experiments: Aqueous solution of a metal salt inserted into these channels reacts with Silicon-hydride present in PDMS, yielding metallic nanoparticles at the channel surface. The kinetics of this reaction was captured in real time, by measuring the wall deformation. Similarly, physical adsorption of a protein: Bovine Serum Albumin, on PDMS surface too was monitored. Finding : The rate of change in deformation can be related to rate of these processes to extract the respective reaction rate constant. These results show that Elastocapillary effect can be a viable analytical tool for in-situ monitoring of many physical and chemical processes for which, the reaction site is inaccessible to conventional analytical methods.

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Section: Discussionmentioning

confidence: 99%

Section: E mentioning

confidence: 99%

Studying Kinetics of a Surface Reaction using Elastocapillary Effect

Singh

Kumar

Ghatak

2023

Preprint

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“…3,5 Accurate materials characterizations rely on the comprehensive understanding of the principles underlying the techniques, the ability to produce meaningful and reliable data, and the acumen in identifying artifacts for accurate interpretations. 7 Educators face significant challenges in creating professionals equipped with these competencies. The challenges may range from balancing theory and practice to resource constraints and complexity of the subject.…”

Section: ■ Introductionmentioning

confidence: 99%

A Teaching-Learning Framework for Materials Characterization

Chetehouna,

Viola

2024

J. Chem. Educ.

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Materials Characterization" is a broad discipline that plays a pivotal role in various scientific sectors and requires diversified training to provide learners with the necessary tools and skills for the investigation of materials' structure, microstructure, and properties. This study puts forward a comprehensive framework aimed at providing undergraduate STEM students with a wide range of competencies for material characterization. These include acquiring the essential theoretical knowledge of key characterization methods, the ability to construct experimental plans, the skills needed for sample preparation, and the aptitude to generate, analyze, and interpret data. By combining various strategies and pedagogical tools, the framework aims to facilitate selfdirected and self-determined learning, allowing students to shape their educational journey and explore areas of personal interest within the discipline. Furthermore, the framework incorporates diversified approaches aimed at developing research proficiency and the ability to communicate research outcomes, both within conference contexts and through report formats resembling publications. The findings demonstrate the promising prospect that undergraduate students have the capacity to acquire the methodologies of scientists and to produce work of comparable quality. This study testifies the considerable potential that lies in engaging enthusiastic and capable students in scientific research and fostering the early development of future researchers.

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