Fundamental Study on Electric Field Assisted Biomachining.

Uno, Yoshiyuki; Kaneeda, Toshiaki; Yokomizo, Seiichi; Yoshimura, Takahiko

doi:10.2493/jjspe.62.540

Cited by 13 publications

(10 citation statements)

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“…ferrooxidans, the mechanism for the biological action was not delineated (Uno et al, 1996). The authors stated that "it was reasonable to assume that a direct-leaching mechanism predominates for pure iron, while an indirect-leaching mechanism predominates for pure copper," but did not provide any evidence to support their assertion.…”

Section: Role Of Chemolithotrophic Bacteria In Biomachiningmentioning

confidence: 96%

“…Although there are a number of chemolithotrophic bacteria, most of the researchers used At. ferrooxidans for biomachining of metals (Uno et al, 1996;Zhang and Li, 1998;Ting et al, 2000;Yasuyuki et al, 2003).…”

Section: Role Of Chemolithotrophic Bacteria In Biomachiningmentioning

confidence: 96%

“…All these characteristics suggest that bacteria could serve as a desirable tool in the machining of microscale features (Johnson et al, 2007). Uno et al (1996) carried out pioneering work in the biomachining of metals. They showed the potential of At.…”

Section: The Process Of Biomachiningmentioning

confidence: 99%

“…With the advent of microelectronic manufacturing, various micromachining methods have been pursued for making miniaturized devices (Rai-Choudhury, 1994;Roy et al, 2001;Chang et al, 2008). The various machining techniques presently used can be classified into two categories, namely, physical processing and chemical processing (Pandey and Shan, 1980;Uno et al, 1996), of which wet chemical etching is the widely used method for micromachining (Williams et al, 2003). These well-established processes require chemical or thermoelectric energy to be concentrated at the machining point.…”

Section: Introductionmentioning

confidence: 99%

“…These well-established processes require chemical or thermoelectric energy to be concentrated at the machining point. Such machining methods may create either a damaged layer or a heat-affected zone on the work surface and could cause potential damage to the metallurgical properties of the workpiece (Uno et al, 1996). Also, the use of hazardous materials (i.e., acids) is unavoidable.…”

Section: Introductionmentioning

confidence: 99%

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Micromanufacturing: An Introduction

Jain¹,

Sidpara²,

Ravisankar³

et al. 2016

Micromanufacturing Processes

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Section: Role Of Chemolithotrophic Bacteria In Biomachiningmentioning

confidence: 96%

Section: Role Of Chemolithotrophic Bacteria In Biomachiningmentioning

confidence: 96%

Section: The Process Of Biomachiningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Micromanufacturing: An Introduction

Jain¹,

Sidpara²,

Ravisankar³

et al. 2016

Micromanufacturing Processes

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Innovative use ofThiobacillus ferrooxidansfor the biological machining of metals

Ting

Kumar

Rahman

et al. 2000

Acta Biotechnologica

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Preliminary results on the novel use of the bacterium Thiobucillus ferrooxiduns (ATCCI 3598 and ATCC3302Q) for the micro-machining (or biomachining) of metals are reported. Biomacnining is a controlled microbiological process to selectively form microstructures on a metal work-piece by metal removal (or dissolution) using microorganisms. Applying copper and mild steel as work-pieces, i t was shown that the mass removed increased proportionately with machining time. In another experiment, the work-pieces were coated with organic photo-resistive materials to mask (i.e. protect) certain regions of the metals, thereby defining the microstructure to be formed. The unmasked regions were successfully biomachined; the final machined profile was shown to be similar to the coating image on the original metal. Although biomachining proceeded at a slower rate than chemical machining, the undesired leaching of the metal in the region under the masked area (termed undercutting) was not as severely encountered when compared with the latter. This work demonstrates the potential use of microorganisms for the biomachining of metals. As a "green process", the innovative use of T. ferrooxiduns for the micro-machining of metals opens up the possibility of biomachining as an alternative to conventional metal processing.

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Studies on kinetics and thermodynamics of biomachining pure copper

Zhang

1999

Sci. China Ser. C.-Life Sci.

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The kinetics and thermodynamics of biomachining pure copper by Thiobacillus ferrooxidans were quantitatively analyzed. The kinetic effect of bacteria on the ion-cycle between Fe(2+) and Fe(3+) and the thermodynamic effect of hydrolysis on the changes of pH in biomachining processes were expounded through six series of experiment. Finally a model of ion-cycle in the biomachining processes was proposed, and the measures for maintaining the stable equilibrium of the ion-cycle were also discussed.

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Fundamental Study on Electric Field Assisted Biomachining.

Cited by 13 publications

References 0 publications

Micromanufacturing: An Introduction

Micromanufacturing: An Introduction

Innovative use ofThiobacillus ferrooxidansfor the biological machining of metals

Studies on kinetics and thermodynamics of biomachining pure copper

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