Editorial for the Special Issue on Miniaturized Transistors

Filipovic, Lado

doi:10.3390/mi10050300

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Silicon, germanium and silicon oxide nanowires, for example, can be formed on different substrates by using metal catalysts in the form of tin, indium or gold nanodroplets [ 13 – 15 ]. Such nanometre-sized one-dimensional materials are, therefore, promising for gate-all-around architectures [ 16 – 17 ], which are very attractive for future low-power field-effect transistors (FETs) [ 18 ] and thermoelectrics [ 19 – 21 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Ernst

Lange

Uebel

et al. 2020

Beilstein J. Nanotechnol.

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The dewetting process is crucial for several applications in nanotechnology. Even though not all dewetting phenomena are fully understood yet, especially regarding metallic fluids, it is clear that the formation of nanometre-sized particles, droplets, and clusters as well as their movement are strongly linked to their wetting behaviour. For this reason, the thermodynamic stability of thin metal layers (0.1–100 nm) with respect to their free energy is examined here. The decisive factor for the theoretical considerations is the interfacial energy. In order to achieve a better understanding of the interfacial interactions, three different models for estimating the interfacial energy are presented here: (i) fully theoretical, (ii) empirical, and (iii) semi-empirical models. The formation of nanometre-sized gold particles on silicon and silicon oxide substrates is investigated in detail. In addition, the strengths and weaknesses of the three models are elucidated, the different substrates used are compared, and the possibility to further process the obtained particles as nanocatalysts is verified. The importance of a persistent thin communication wetting layer between the particles and its effects on particle size and number is also clarified here. In particular, the intrinsic reduction of the Laplace pressure of the system due to material re-evaporation and Ostwald ripening describes the theoretically predicted and experimentally obtained results. Thus, dewetting phenomena of thin metal layers can be used to manufacture nanostructured devices. From this point of view, the application of gold droplets as catalysts to grow germanium nanowires on different substrates is described.

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Section: Introductionmentioning

confidence: 99%

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Ernst

Lange

Uebel

et al. 2020

Beilstein J. Nanotechnol.

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show abstract

“…[12] Silicon, germanium and silicon oxide nanowires, for example, can be formed on different substrates using metal catalysts in form of tin, indium or gold nanodroplets. [13] [14] Such nanometre-sized onedimensional materials are therefore promising for gate all-round architectures [15], which are very attractive for future low-power field effect transistors (FETs) [16] or thermoelectrics. [17] [18] [19] 3…”

Section: Introductionmentioning

confidence: 99%

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Ernst¹,

Lange²,

Uebel³

et al. 2020

Preprint

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In several nanotechnological applications the dewetting process is crucial. Although not all phenomena of dewetting are fully understood yet, especially with regard to metallic fluids, it is clear that the formation of nanoparticles, -droplets, and -clusters and their movement is strongly linked to their wetting behaviour. For this reason, the thermodynamic stability of thin metal layers (0.1 – 100 nm) with respect to its free energy is examined here. The decisive factor for the theoretical consideration is the interfacial energy. In order to achieve a better understanding of the interface interactions, three different models for the estimation of this energy are presented: i. fully theoretical, ii. empirical and iii. semi-empirical. The formation of nanometre-sized gold particles on silicon and silicon oxide is investigated in detail, elucidating the strengths and weaknesses of the three models, comparing the different substrates, and verifying the possibility of further processing of the gained particles as nanocatalysts. The importance of a persistent thin communication wetting layer between the particles and its effects on their size and number also becomes clear. In particular, the intrinsic reduction of the Laplace pressure of the system by material re-evaporation and Ostwald ripening is considered to describe the theoretically predicted and experimentally found effects. Thus dewetting phenomena of thin metal layers can be well-directed used for the manufacturing of nanostructured devices. From this viewpoint, the behaviour of gold droplets as catalysts to grow germanium nanowires on different substrates is described.

show abstract

Revealing all states of dewetting of a thin gold layer on a silicon surface by nanosecond laser conditioning

Ernst

Uebel

Kayser

et al. 2021

Applied Surface Science Advances

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Editorial for the Special Issue on Miniaturized Transistors

Abstract: Complementary Metal Oxide Semiconductor (CMOS) devices and fabrication techniques have enabled tremendous technological advancements in a short period of time [...]

Cited by 4 publications

References 13 publications

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

Revealing all states of dewetting of a thin gold layer on a silicon surface by nanosecond laser conditioning

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