Electrochemically synthesized amorphous and crystalline nanowires: dissimilar nanomechanical behavior in comparison with homologous flat films

Zeeshan, Muhammad; Ojos, D. Esqué-de los; Castro‐Hartmann, Pablo; Guerrero, Miguel; Nogués, J.; Suriñach, S.; Baró, María Dolors; Nelson, Bradley J.; Pellicer, Eva; Sort, Jordi

doi:10.1039/c5nr04398k

Cited by 15 publications

(13 citation statements)

References 41 publications

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“…For a homogeneous bulk metal one can expect that the constraint factor C =p/σ 0.1 = 2.6 (Casals and Alcalá, 2005;Mata et al, 2002). However, by introducing porosity, this value will be necessarily reduced due to reduction of hydrostatic pressure (Domingo-Roca et al, 2015;Zeeshan et al, 2015). Fig.…”

Section: Nanoindentation Experiments Extraction Of Mechanical Propermentioning

confidence: 98%

Nanomechanical behaviour of open-cell nanoporous metals: Homogeneous versus thickness-dependent porosity

Ojos

Zhang

Fornell

et al. 2016

Mechanics of Materials

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Section: Nanoindentation Experiments Extraction Of Mechanical Propermentioning

confidence: 98%

Nanomechanical behaviour of open-cell nanoporous metals: Homogeneous versus thickness-dependent porosity

Ojos

Zhang

Fornell

et al. 2016

Mechanics of Materials

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“…[61] The size of the metallic glass nanostructures by the chemical reduction method can range from 2 nm to several hundred nanometers. [62,63] Generally a nanomold, such as an AAO template, [64] is placed in the electrolyte containing metal anions and electrolyte and a potentiodynamic electrodeposition is conducted to form well defined nanostructures as depicted in Figure 5. [62,63] Generally a nanomold, such as an AAO template, [64] is placed in the electrolyte containing metal anions and electrolyte and a potentiodynamic electrodeposition is conducted to form well defined nanostructures as depicted in Figure 5.…”

Section: Chemical Synthesismentioning

confidence: 99%

“…[55,56] For templated electrodeposition, the size of the MGNs are dependent on the size of the nanomolds, which can be on the order of 100 nm. [62] These fabricated MGNs can then be directly applied as electrodes for electrocatalytic reactions. [62] These fabricated MGNs can then be directly applied as electrodes for electrocatalytic reactions.…”

Section: Chemical Synthesismentioning

confidence: 99%

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Doubek

McMillon‐Brown

et al. 2018

Advanced Materials

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transformers [2] and load bearing applications. [3] In the last few decades, the study of nanomaterials has become a central focus in nanoscience and nanotechnology. [4] In fact, many studies have shown that with reduction in size, nanomaterials display novel electrical, mechanical, chemical and optical properties, which are largely believed to be the result of surface and quantum confinement effects. [4,5] Remarkably, this trend has found traction in the metallic glass field where metallic glasses nanostructures (MGNs) demonstrate an important role in many applications such as light harvesting, [6] photovoltaic, [7] biomedical, [8] magneto-optical, [9] organic synthesis, [10] lithium-ion batteries [11] and electrocatalysis. [12] Recently, MGNs are receiving increased attention due to their distinguished performance, such as high activity and long term stability in electrocatalytic reactions. [12,13] Although several review papers have already covered the topic of nanopatterning of bulk metallic glasses (BMGs), [14][15][16] the correlation between recent synthetic methods and electrocatalytic applications for MGNs has not been thoroughly addressed. Moreover, there is currently no review that unites MGNs synthesized from different approaches (top-down and bottom-up) with conventional electrochemical reactions. Therefore, in this review our mission is to: 1) present a focused perspective on the latest fabrication techniques of MGNs toward the pursuit of novel electrocatalysts and electrodes; 2) highlight recent advances in computational screening and predictions that could be applied toward new metallic glass electrocatalyst discovery; and 3) report distinct advancements in electrocatalytic applications related to MGNs by creating a comprehensive discussion for commonly employed kinetic parameters and their connection with the unique material structure. Finally, as the first progress report on the metallic glass based electrocatalysts, we will also highlight some of the challenges that need to be addressed toward future progress in this field.BMGs are those metallic glasses (MGs) that can be made in 'bulk' scale with good glass forming abilities, [17] representing a versatile platform for many applications. To date, a wide range of BMG-forming alloys have been developed, including Zr-, [18] Fe-, [19] Cu-, [20] Ni-, [21] Ti-, [22] Mg-, [23] Pd-, [24] Au-, [25] and Pt-based compositions. [26] Moreover, the increased disorder brought by the higher degree of multinary systems is believed to contribute to improving the glass formation. [27] The evolution to multicomponent alloys of the most recent MG studies has also made them natural candidates for catalysis. The amorphous multinary Recent advances in metallic glass nanostructures (MGNs) are reported, covering a wide array of synthesis strategies, computational discovery, and design solutions that provide insight into distinct electrocatalytic applications. A brief introduction to the development and unique features of MGNs with an overview of top-down and bottom-up sy...

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“…Although the plasticity of metallic glasses in bulk form is rather limited due to the rapid propagation of single shear bands [1,2], an improved mechanical performance has been reported in miniaturized metallic glasses [25,26]. For this reason, there is a growing interest in new approaches towards the synthesis of metallic glass microwires [27] and nanowires [26], in view of their potential applications in micro/nano-electro-mechanical systems (MEMS/NEMS).…”

mentioning

confidence: 99%

“…For this reason, there is a growing interest in new approaches towards the synthesis of metallic glass microwires [27] and nanowires [26], in view of their potential applications in micro/nano-electro-mechanical systems (MEMS/NEMS). From the aforementioned aspects and the ongoing works on the topic, it is likely that the interest in metallic glasses will continue to increase in the near future with the development of new compositions and novel applications, particularly in devices with micrometer and submicrometer sizes, where the full potential of these glassy materials is yet to come.…”

mentioning

confidence: 99%

Metallic Glasses

Chan¹,

Sort

2015

Metals

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Metallic glasses are a fascinating class of metallic materials that do not display long-range atomic order. Due to their amorphous character and the concomitant lack of dislocations, these materials exhibit mechanical properties that are quite different from those of other solid materials [1,2]. For example, they can be twice as strong as steels, show more elasticity and fracture toughness than ceramics and be less brittle than conventional oxide glasses. In addition to their unique mechanical properties, metallic glasses have also demonstrated interesting physical and chemical properties. For example, some metallic glasses have been found to exhibit superior soft magnetic properties [3], good magnetocaloric effects [4] and outstanding catalytic performance [5], thus having potential for a widespread range of technological applications [6].Metallic glasses become relatively malleable when heated in the supercooled liquid region, allowing moulding and shaping with microscale precision by means of thermoplastic processing [7]. This has facilitated the development of diverse products based on these alloys, including sporting goods, medical and electronic devices and advanced defence and aerospace applications. However, in spite of their large elasticity, metallic glasses exhibit poor room-temperature macroscopic plasticity compared to polycrystalline metals [8]. This low plastic deformation, particularly evidenced when testing metallic glasses under tension, is related to the formation and rapid propagation of shear bands [2]. Therefore, novel routes to enhance plasticity of metallic glasses include procedures to hinder shear band propagation. This can be achieved, for example, by designing composite materials consisting of particles which act as second-phase reinforcements embedded in the amorphous matrix [9,10]. Other approaches towards toughening of metallic glasses have also been developed, such as the preparation of the so-called dual-phase amorphous metals [11], some specific surface treatments (e.g., laser or shot pinning) [12], or making their overall structure porous (i.e., metallic glass foams) [13]. OPEN ACCESS

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Electrochemically synthesized amorphous and crystalline nanowires: dissimilar nanomechanical behavior in comparison with homologous flat films

Cited by 15 publications

References 41 publications

Nanomechanical behaviour of open-cell nanoporous metals: Homogeneous versus thickness-dependent porosity

Nanomechanical behaviour of open-cell nanoporous metals: Homogeneous versus thickness-dependent porosity

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Metallic Glasses

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