SelectedWorks - Richard B. Frankel

Selected Works of Richard B. Frankel

Professor Emeritus

Works
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About Richard B. Frankel

Present	Professor Emeritus, Physics, California Polytechnic State University, San Luis Obispo
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Physics

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Articles (168)

Novel magnetite-producing magnetotactic bacteria belonging to the Gammaproteobacteria

The ISME Journal (2012)

Christopher T. Lefèvre, Nathan Viloria, Marian L. Schmidt, Mihály Pósfai, et al.

Two novel magnetotactic bacteria (MTB) were isolated from sediment and water collected from the Badwater Basin, Death Valley National Park ...

A Cultured Greigite-Producing Magnetotactic Bacterium in a Novel Group of ...

Science Magazine (2011)

Christopher T. Lefèvre, Nicholas Menguy, Fernanda Abreu, Ulysses Lins, et al.

Magnetotactic bacteria contain magnetosomes—intracellular, membrane-bounded, magnetic nanocrystals of magnetite (Fe3O4) or greigite (Fe3S4)—that cause the bacteria to swim along geomagnetic ...

Morphological features of elongated-anisotropic magnetosome crystals in magnetotactic bacteria of ...

Earth and Planetary Science Letters (2011)

Christopher T. Lefèvre, Mihály Pósfai, Fernanda Abreu, Ulysses Lins, et al.

High resolution transmission electron microscopy was used to study the crystallographic habits of the elongated magnetite crystals, variously described as ...

Isolation of obligately alkaliphilic magnetotactic bacteria from extremely alkaline environments

Environmental Microbiology (2011)

Christopher T. Lefevre, Richard B. Frankel, Mihály Pósfai, Tanya Prozorov, et al.

Large numbers of magnetotactic bacteria were discovered in mud and water samples collected from a number of highly alkaline aquatic ...

Culture-Independent Characterization of a Novel, Uncultivated Magnetotactic Member of the ...

Environmental Microbiology (2011)

Christopher T. Lefevre, Richard B. Frankel, Fernanda Abreu, Ulysses Lins, et al.

A magnetotactic bacterium, designated strain LO-1, of the Nitrospirae phylum was detected and concentrated from a number of freshwater and ...

Moderately Thermophilic Magnetotactic Bacteria from Hot Springs in Nevada

Applied and Environmental Microbiology (2010)

Christopher T. Lefevre, Fernanda Abreu, Marian L. Schimdt, Ulysses Lins, et al.

Populations of a moderately thermophilic magnetotactic bacterium were discovered in Great Boiling Springs, Nevada, ranging from 32 to 63°C. Cells ...

The discovery of magnetotactic/magnetosensitive bacteria

Chinese Journal of Oceanology and Limnology (2009)

Richard B. Frankel

Magnetosomes and Magneto-Aerotaxis

Contribution to Microbiology (2009)

Richard B. Frankel and Dennis A. Bazylinski

Magnetotactic bacteria orient and migrate along geomagnetic field lines. Magneto-aerotaxis increases the efficiency of respiring microaerophilic cells to efficiently find ...

Magnetic properties of marine magnetotactic bacteria in a seasonally stratified ...

Geophysical Journal International (2008)

Bruce M. Moskowitz, Dennis A. Bazylinski, Ramon Egli, Richard B. Frankel, et al.

Magnetic properties of suspended material in the water columns of freshwater and marine environments provide snapshots of magnetic biomineralization that ...

Magneto-Aerotaxis

Biology Monographs: Magnetoreception and Magnetosomes in Bacteria (2007)

Richard B. Frankel, Timothy J. Williams and Dennis A. Bazylinski

Magnetotactic bacteria orient and migrate along geomagnetic field lines. Magneto-aerotaxis increases the efficiency of respiring cells to efficiently find and ...

Magnetic Microstructure of Iron Sulfide Crystals in Magnetotactic Bacteria from ...

Physica B: Condensed Matter (2006)

T. Kasama, Mihály Pósfai, R. K. K. Chong, A. P. Finlayson, et al.

Transmission electron microscopy, off-axis electron holography and energy-selected imaging were used to study the crystallography, morphology, and magnetic microstructure of ...

Properties of Intracellular Magnetite Crystals Produced by Desulfovibrio magneticus Strain ...

Earth and Planetary Science Letters (2006)

Mihály Pósfai, B. M. Moskowitz, Balázs Arató, Dirk Schüler, et al.

Desulfovibrio magneticus strain RS-1 is an anaerobic sulfate-reducing bacterium. Cells form intracellular nanocrystals of magnetite but are only weakly magnetotactic. ...

Crystal Habits and Magnetic Microstructures of Magnetosomes in Coccoid Magnetotactic ...

Annals of the Brazilian Academy of Sciences (2006)

Ulysses Lins, Martha R. McCartney, Marcos Farina, Richard B. Frankel, et al.

We report on the application of off-axis electron holography and high-resolution TEM to study the crystal habits of magnetosomes and ...

Modes of Biomineralization of Magnetite by Microbes

Geomicrobiology Journal (2006)

Dennis A. Bazylinski, Richard B. Frankel and Kurt O. Konhauser

Biomineralization processes have traditionally been grouped into two distinct modes; biologically induced mineralization (BIM) and biologically controlled mineralization (BCM). In ...

How Magnetotactic Bacteria Make Magnetosomes Queue Up

Trends in Microbiology (2006)

Richard B. Frankel and Dennis A. Bazylinski

Magnetotactic bacteria contain chains of magnetosomes that comprise a permanent magnetic dipole in each cell. In two separate, recent papers, ...

Habits of Magnetosome Crystals in Coccoid Magnetotactic Bacteria

Applied and Environmental Microbiology (2005)

Ulysses Lins, Martha R. McCartney, Marcos Farina, Richard B. Frankel, et al.

High-resolution transmission electron microscopy and electron holography were used to study the habits of exceptionally large magnetite crystals in coccoid ...

Spatiotemporal Distribution of Marine Magnetotactic Bacteria in a Seasonally Stratified ...

Applied and Environmental Microbiology (2004)

S. L. Simmons, S. M. Sievert, Richard B. Frankel, Dennis A. Bazylinski, et al.

The occurrence and distribution of magnetotactic bacteria (MB) were studied as a function of the physical and chemical conditions in ...

Magnetosome Mysteries

ASM News (2004)

Richard B. Frankel and Dennis A. Bazylinski

Magnetosome Formation in Prokaryotes

Nature Reviews Microbiology (2004)

Dennis A. Bazylinski and Richard B. Frankel

Magnetotactic bacteria were discovered almost 30 years ago, and for many years and many different reasons, the number of researchers ...

Biological Permanent Magnets

Hyperfine Interactions (2003)

Richard B. Frankel

Magnetotactic bacteria orient and migrate along magnetic field lines. Each cell is essentially a self-propelled magnetic dipole. The magnetic properties ...

Magnetite Morphology and Life on Mars

Proceedings of the National Academy of Sciences of the United States of America (2001)

Peter R. Buseck, Rafal E. Dunin-Borkowski, Bertrand Devouard, Richard B. Frankel, et al.

Nanocrystals of magnetite (Fe3O4) in a meteorite from Mars provide the strongest, albeit controversial, evidence for the former presence of ...

Magnetic Microstructure of Bacterial Magnetite by Electron Holography

European Journal of Mineralogy (2001)

Martha R. McCartney, Ulysses Lins, Marcos Farina, Peter R. Buseck, et al.

A brackish lagoon at Itaipu, Brazil, contains magnetotactic bacteria with unusually large magnetite magnetosomes (lengths 100–200 nm). The micromagnetic structures ...

Crystal-size Distributions and Possible Biogenic Origin of Fe Sulfides

European Journal of Mineralogy (2001)

Mihály Pósfai, Krisztina Cziner, Emö Márton, Péter Márton, et al.

Sedimentary greigite (Fe3S4) can form either by ''biologically controlled'' or by ''biologically induced mineralization'' (BCM and BIM, respectively). In order ...

Off-axis Electron Holography of Magnetotactic Bacteria: Magnetic Microstructure of Strains ...

European Journal of Mineralogy (2001)

R. E. Dunin-Borkowski, Martha R. McCartney, Mihály Pósfai, Richard B. Frankel, et al.

Off-axis electron holography in the transmission electron microscope is used to characterize the magnetic microstructure of magnetotactic bacteria. The practical ...

Instrument for the measurement of hysteresis loops of magnetotactic bacteria ...

Review of Scientific Instruments (2001)

Hendrik de Waard, James Hilsinger and Richard B. Frankel

An electronic control system for the measurement of hysteresis curves of microscopically observed magnetic structures such as chains of magnetosomes ...