In situ observations of Berkovich indentation induced phase transitions in crystalline silicon films

Gerbig, Y.; Michaels, Chris A.; Cook, Robert F.

doi:10.1016/j.scriptamat.2016.04.007

Cited by 17 publications

(5 citation statements)

References 38 publications

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“…However, measuring the local properties of metal-nitrides is a daunting task as the inert nature of the nitrogen molecules and the undesirable formation of oxides can lead to nanoscopic inhomogeneities in mechanical properties [ [33] , [34] , [35] ]. The nanoindentation technique can be a promising method to investigate the nanomechanical properties [ 36 ]. The advantage of nanoindentation compared to the tensile test is that the elastic modulus, hardness and flow stresses can be evaluated without the standard specimen fabrication.…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical inhomogeneities in CVA-deposited titanium nitride thin films: Nanoindentation and finite element method investigations

Sharma,

Rana,

Panwar

et al. 2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

Nanomechanical inhomogeneities in CVA-deposited titanium nitride thin films: Nanoindentation and finite element method investigations

Sharma,

Rana,

Panwar

et al. 2024

Heliyon

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“…A method of realizing this task combines nanoindentation testing with micro-Raman spectroscopy. This approach has been successfully used on many occasions, e.g., to identify a sequence of the indentation-induced phase transformations of Si [ 2 , 3 , 4 ] or to determine stress in silicon films on a sapphire substrate [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Indentation Load on the Raman Spectra of the InP Crystal

et al. 2022

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Nanoindentations and the Raman spectroscopy measurements were carried out on the (001) surface of undoped and S-doped InP crystal. The samples were indented with the maximum load ranging from 15 mN to 100 mN. The phase transition B3→B1 was not confirmed by spectroscopic experiments, indicating a plastic deformation mechanism governed by dislocations activity. Increasing the maximum indentation load shifts and the longitudinal and transverse optical Raman bands to lower frequencies reveals a reduction in the elastic energy stored in the plastic zone right below the indentation imprint. Mechanical experiments have shown that a shift in Raman bands occurs alongside the indentation size effect. Indeed, the hardness of undoped and S-doped InP crystal decreases as a function of the maximum indentation load.

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“…The nanoindentation technique can be a promising method to investigate the nanomechanical properties. 29 During an indentation test, the applied force and the indentation depth is continuous monitored and the elastic modulus and the hardness can be measured. In this work, the titanium nitride (TiN) thin films grown by CVA deposition have been investigated using the nanoindentation to understand the nanomechanical properties of titanium nitride (TiN).…”

Section: Introductionmentioning

confidence: 99%

Population abundance of Greater Flamingo Phoenicopterus roseus (Aves: Phoenicopteridae) in district Gurugram of Haryana, India

Kumar

Rana

2022

J. Threat. Taxa

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We quantified the population abundance of Greater Flamingo Phoenicopterus roseus in Najafgarh Drain (Jheel), Basai Wetland, and Sultanpur flats of district Gurugram, Haryana from October 2018 to December 2020. A total of 72 visits were made to the study sites. In this study, we explored the uses of an unmanned aerial vehicle (UAV) equipped with a 5-megapixel camera to census the population and distribution of Greater Flamingos. The Nikon 10 x 50 field binoculars were used for observations. A photographic record was taken using a Canon Powershot sx70hs camera. To estimate the population size, point count method was used and videos and image analysis were carried out for a more accurate count in densely packed flocks. The mean population of Greater Flamingos was 267 ± 47 observed throughout the study period from the three sites. For three years, the highest mean population of Greater Flamingos recorded was 745 ± 76 at Najafgarh Drain and the lowest was 19 ± 8 at Sultanpur Flats. The Greater Flamingos were found to be residents at Najafgarh Drain. At the Basai Wetland, two major human activities were the construction of highways along wetlands and wetland drainage have been observed that resulted in habitat fragmentation and shrinkage, which is responsible for the huge decline in their population. While at Najafgarh Jheel fishing activities and overgrowth of water hyacinth were a major threat that affect the Greater Flamingo population. The findings in this study will be beneficial for the conservation efforts of the flamingos in this area.

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In situ observations of Berkovich indentation induced phase transitions in crystalline silicon films

Cited by 17 publications

References 38 publications

Nanomechanical inhomogeneities in CVA-deposited titanium nitride thin films: Nanoindentation and finite element method investigations

Nanomechanical inhomogeneities in CVA-deposited titanium nitride thin films: Nanoindentation and finite element method investigations

Effect of the Indentation Load on the Raman Spectra of the InP Crystal

Population abundance of Greater Flamingo Phoenicopterus roseus (Aves: Phoenicopteridae) in district Gurugram of Haryana, India

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