Characterisation of electrostatic discharges from insulating surfaces

Davidson, Jennifer L.; Williams, Trevor; Bailey, A.G.; Hearn, G.L.

doi:10.1016/s0304-3886(01)00104-8

Cited by 14 publications

(7 citation statements)

References 8 publications

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“…Electrostatic charging is familiar to most persons, but knowledge on this topic is still rather empiric, [1][2][3] mainly because fundamental ideas on the structure of matter are not wellconnected to the phenomenology of insulator charging. [4][5][6][7][8][9][10][11][12] The present work shows that water adsorption and desorption modify charge status of solids, within a shielded environment and thus without any explicit electrical input.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic Charging of Hydrophilic Particles Due to Water Adsorption

2009

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Kelvin force microscopy measurements on films of noncrystalline silica and aluminum phosphate particles reveal complex electrostatic potential patterns that change irreversibly as the relative humidity changes within an electrically shielded and grounded environment. Potential adjacent to the particle surfaces is always negative and potential gradients in excess of +/-10 MV/m are found parallel to the film surface. These results verify the following hypothesis: the atmosphere is a source and sink of electrostatic charges in dielectrics, due to the partition of OH(-) and H(+) ions associated to water adsorption. Neither contact, tribochemical or electrochemical ion or electron injection are needed to change the charge state of the noncrystalline hydrophilic solids used in this work.

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Section: Introductionmentioning

confidence: 99%

Electrostatic Charging of Hydrophilic Particles Due to Water Adsorption

2009

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“…1,8 A persistent problem is the difficulty to produce repeatable and previsible electric potential patterns 9,10 that cannot be solved unless the underlying charge-bearing species, transport phenomena, and chemical reactions are wellunderstood. This undesirable situation is well-documented in the literature, [9][10][11][12][13][14][15][16] and it requires new efforts for the speciation of charge carriers in insulators, as well as their quantification. 16 This problem has been addressed recently, and new proposals have been put forward by different authors.…”

Section: Introductionmentioning

confidence: 99%

“…Even after a few centuries of research by distinguished authors, electrostatic charging of insulators is still poorly known, and it often goes out of control because the identity of charge carriers is not known, in nearly every case in the laboratory or in a practical situation. , A persistent problem is the difficulty to produce repeatable and previsible electric potential patterns , that cannot be solved unless the underlying charge-bearing species, transport phenomena, and chemical reactions are well-understood. This undesirable situation is well-documented in the literature, − and it requires new efforts for the speciation of charge carriers in insulators, as well as their quantification . This problem has been addressed recently, and new proposals have been put forward by different authors. − Three different mechanisms for contact electrification were recently emphasized by McCarty and Whitesides: electron transfer for contact between metals or semiconductors, ion transfer for contact involving materials that contain mobile ions, and asymmetric partitioning of hydroxide ions between adsorbed layers of water for contact involving nonionic and insulating materials .…”

Section: Introductionmentioning

confidence: 99%

Water Vapor Adsorption Effect on Silica Surface Electrostatic Patterning

2008

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This work verifies a model for the creation and dissipation of reproducible electric potential patterns on silica surfaces, based on water adsorption, ionization, and ion migration under applied electric potential. Samples were thin silica films grown on silicon wafers and partially covered with sets of parallel gold stripe interdigitated electrodes that are normally used for Kelvin force microscope calibration. Noncontact electric potential measurements with a 20 nm spatial resolution were done using the Kelvin method under controlled atmosphere, in an atomic force microscope (AFM) with a Kelvin force attachment (KFM) mounted within an environmental chamber. Patterns were observed in micrographs acquired while one electrode set was biased and the other was grounded and when both were short-circuited and grounded. Electrostatic charging and discharging are much faster at high relative humidity, showing that the charged or discharged silica states are both changed faster under high humidity, while pattern preservation is effective under low humidity. The results are explained considering surface conductance and the partitioning of water cluster ions both in the solid−gas interfaces and the atmosphere, under the biased electrode potential.

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“…The mainstream of ESD-related literature deals, in fact, not with ESD protection directly but with the nature and effects of ESD events, assuming that discharge does already occur [5], [6]. A major share is taken by models (i.e., substituting circuits) of equipment or personnel potentially carrying accumulated charge [7], [8], facilitating comparative characterization [5], formal analysis, simulation of ESD events [6], and definition of robustness requirements for semiconductor components and their protective circuits.…”

Section: Esd Protection In Literaturementioning

confidence: 99%

Surface resistance of ESD-protected worksurfaces—measurement, modelling and estimation considerations

et al. 2017

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The prevention of electrostatic discharge (ESD) is of crucial importance in the electronics industry, and surfaces of workstations have to be of specific resistance for effective ESD protection. The paper presents results of an R&D project which investigated the—so far rarely researched—dependence of worksurface resistance on ambient conditions and surface contamination. Upon examination of known and assumed dependencies, measurement and instrumentation are outlined, relying on existing automated facility management, autonomous devices, and manual measurement/logging. Further parts of the paper report on an analysis of the data obtained, as well as their use in building models of surface resistance, employing feature selection metaheuristics applied in combination with artificial neural networks. Surface resistance models built with approximately one year’s worth of measurement data yielded estimations with 12 % average relative error, and showed that surface resistance can be estimated relying on data that can be obtained by contactless and remote measurement, without immediate interference with work processes.

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Characterisation of electrostatic discharges from insulating surfaces

Cited by 14 publications

References 8 publications

Electrostatic Charging of Hydrophilic Particles Due to Water Adsorption

Electrostatic Charging of Hydrophilic Particles Due to Water Adsorption

Water Vapor Adsorption Effect on Silica Surface Electrostatic Patterning

Surface resistance of ESD-protected worksurfaces—measurement, modelling and estimation considerations

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