Understanding behavior of machining interface and dielectric molecular medium in nanoscale electro-machining

Kalyanasundaram, V.; Virwani, Kumar; Spearot, Douglas E.; Malshe, Ajay P.; Rajurkar, K. P.

doi:10.1016/j.cirp.2008.03.011

Cited by 13 publications

(4 citation statements)

References 16 publications

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“…Further ordering is expected when subjected to the electrical field boundary conditions during nano-EM. , This knowledge will pave the way for a thorough understanding of the nano-EM process mechanism and the machining protocol. It is hypothesized that the above observed organization of nanoconfined molecular medium has an impact on nano-EM by masking the work function of the cathode material as shown previously using Paschen curves . Ultimately, anisotropy in the dielectric function of the molecular medium and in the characteristics of diffusion within the machining interface will further determine nano-EM process speed and efficiency.…”

Section: Summary Of Primary Conclusionmentioning

confidence: 73%

“…It is hypothesized that the above observed organization of nanoconfined molecular medium has an impact on nano-EM by masking the work function of the cathode material as shown previously using Paschen curves. 63 Ultimately, anisotropy in the dielectric function of the molecular medium and in the characteristics of diffusion within the machining interface will further determine nano-EM process speed and efficiency.…”

Section: Summary Of Primary Conclusionmentioning

confidence: 99%

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Molecular Dynamics Simulation of Nanoconfinement Induced Organization of n-Decane

2009

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Molecular dynamics (MD) simulations are used to study the behavior of n-decane under sub-10 nm confinement between two gold {111} surfaces. This confinement and dielectric medium are characteristic of those used in nanoscale electromachining (nano-EM) processes; thus, it is important that the behavior of the nanoconfined dielectric medium be investigated for better process understanding. Results obtained via MD simulations indicate that, when confined down to a thickness less than 1 nm, the mechanical boundary conditions trigger organization in the n-decane medium, resulting in two distinct molecular layers. The n-decane chains lie flat on the {111} gold surfaces and show preferred orientation in the close-packed 110 crystallographic directions. A 4-fold increase in the maximum local density as compared with the experimental bulk (liquid) density is observed at the interface between the molecular medium and the gold {111} surfaces, regardless of confinement spacing. Radial distribution function curves are used to quantitatively examine organization of the medium into molecular layers. The deliberate introduction of ledges (atomic steps) on the gold surface triggers a preferred alignment of the n-decane chains toward the boundaries of the ledges.

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Section: Summary Of Primary Conclusionmentioning

confidence: 73%

Section: Summary Of Primary Conclusionmentioning

confidence: 99%

Molecular Dynamics Simulation of Nanoconfinement Induced Organization of n-Decane

2009

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“…They further reported that these sharp tool tip electrode may be used in microfluidics channel fabrication, narrow confinement space formation, etc. Further, Kalyanasundaram et al [36] analyzed the machining interface behavior in a liquid dielectric (n-decane) under nanoconfinement space (< 3 nm) through molecular dynamic simulation method with some physical boundary condition. The dielectric breakdown and its recovery characterization were presented through the Paschen curve.…”

Section: A State-of-the-art On Nano-em/edmmentioning

confidence: 99%

Recent trends, opportunities and other aspects of micro-EDM for advanced manufacturing: a comprehensive review

Kumar

Singh

Bajpai

2020

J Braz. Soc. Mech. Sci. Eng.

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Micro-electrical discharge machining is an indispensable tool to manufacture the component or parts of components at the micro-level with reasonable accuracy and precision. This article reports a comprehensive overview of micro-EDM along with their recent trends and key challenges. The sparking phenomenon, physical principle of material removal, process capabilities and flexibility with the other machining process are discussed in the initial part of the paper. Major development issues associated with nano-EDM are reviewed, and suggested solutions are proposed. Research and technology gaps enabling the transition from micro-EDM to nano-EDM are examined. The impact of discharge power technology and dielectric circulation is explored. Moreover, this review article explores the sustainability of the system (micro-EDM) through green manufacturing. A state-of-the-art has been studied in various aspects of micro-EDM. The promising future research scope is also noted in micro-EDM as well as in nano-EDM based on the electrical discharge.

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“…The submicron devices have been widely used in various applications such as information processing, optical communication, magnetic microsystem, optoelectronics, flat panel display and biotechnology [1]. The ability to make features at the micro-to nanoscale is of crucial importance [2]. One major technology is direct writing including a family of processes for the deposition of various functional materials to form simple linear or complex conformal structures on a substrate [3].…”

Section: Introductionmentioning

confidence: 99%

Submicron imprint of trench structures by external and intrinsic electromagnetic force

Hocheng

Wen

2010

CIRP Annals

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Understanding behavior of machining interface and dielectric molecular medium in nanoscale electro-machining

Cited by 13 publications

References 16 publications

Molecular Dynamics Simulation of Nanoconfinement Induced Organization of n-Decane

Molecular Dynamics Simulation of Nanoconfinement Induced Organization of n-Decane

Recent trends, opportunities and other aspects of micro-EDM for advanced manufacturing: a comprehensive review

Submicron imprint of trench structures by external and intrinsic electromagnetic force

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