Bioorganic nanodots for non-volatile memory devices

Amdursky, Nadav; Shalev, Gil; Handelman, Amir; Litsyn, Simon; Natan, Amir; Roizin, Yakov; Rosenwaks, Y.; Szwarcman, Daniel; Rosenman, G.

doi:10.1063/1.4838815

Cited by 13 publications

(8 citation statements)

References 38 publications

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“…While discussing charge storage applications, we should also briefly mention charge storage in memories, and especially nonvolatile type of memories, where there were some attempts for the use of biomolecules as the charge storage media in memories …”

Section: Perspective and Future Directionsmentioning

confidence: 99%

Macroscale Biomolecular Electronics and Ionics

2018

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www.advmat.de www.advancedsciencenews.com modern semiconductor-based electronic processing. The melanin story is also an archetype of the more recent "DNA-debate" and questions as to whether proteins, lipids, polysaccharides, etc., can intrinsically sustain electronic conduction and hence ET in the solid state. [13,31,32,41] That said, it is now appropriate and timely to introduce the basic concepts of ionic conduction.

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Section: Perspective and Future Directionsmentioning

confidence: 99%

Macroscale Biomolecular Electronics and Ionics

2018

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“…Among the endless variety of the peptide material morphologies, some of them have elongated architectures like nanofibers, hollow rectangular microtubes, rhombic rods, and hexagonal hollow tubes were studied. Intensive investigations of different peptide nanostructures and especially diphenylalanine (FF) nanotubes revealed unique physical properties such as piezoelectric effect, semiconducting properties, high mechanical rigidity and stiffness, quantum confinement, nanoscale charge storage, and more. These superior physical properties allowed to demonstrate promising applications of peptide nanostructures, such as autonomous motors, piezoelectric power generators, drug delivery systems, and more.…”

Section: Peptide Nanotechnology: Ordered and Patterned Peptide Nanostmentioning

confidence: 99%

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

Apter

Lapshina

Handelman

et al. 2018

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Optical waveguiding phenomena found in bioinspired chemically synthesized peptide nanostructures are a new paradigm which can revolutionize emerging fields of precise medicine and health monitoring. A unique combination of their intrinsic biocompatibility with remarkable multifunctional optical properties and developed nanotechnology of large peptide wafers makes them highly promising for new biomedical light therapy tools and implantable optical biochips. This Review highlights a new field of peptide nanophotonics. It covers peptide nanotechnology and the fabrication process of peptide integrated optical circuits, basic studies of linear and nonlinear optical phenomena in biological and bioinspired nanostructures, and their passive and active optical waveguiding. It is shown that the optical properties of this generation of bio-optical materials are governed by fundamental biological processes. Refolding the peptide secondary structure is followed by wideband optical absorption and visible tunable fluorescence. In peptide optical waveguides, such a bio-optical effect leads to switching from passive waveguiding mode in native α-helical phase to an active one in the β-sheet phase. The found active waveguiding effect in β-sheet fiber structures below optical diffraction limit opens an avenue for the future development of new bionanophotonics in ultrathin peptide/protein fibrillar structures toward advanced biomedical nanotechnology.

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“…Similarly, conductivity in peptide structures stabilized by intermolecular π–π stacking has previously been reported . KPFM has also previously been used to show that peptide nanodots of FF peptides can store charges …”

Section: Resultsmentioning

confidence: 66%

The Physical Properties and Self‐Assembly Potential of the RFFFR Peptide

2016

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The self-assembly of fibers from peptides has attracted a tremendous amount of attention due to its many applications, such as in drug-delivery systems, in tissue engineering, and in electronic devices. Recently, the self-assembly potential of the designer peptide RFFFR has been reported. Here it is experimentally verified that the peptide forms fibers that are entangled and form solid spheres without water inside. Upon dilution below the critical fiber concentration, the fibers untangle and become totally separated prior to dissolution. These structures readily bind thioflavin T, resulting in a characteristic change in fluorescent properties consistent with β-sheet-rich amyloid structures with aromatic/hydrophobic grooves. The circular dichroism spectroscopy data are dominated by a π→π* transition, thus indicating that the fibers are stabilized by π-stacking. Contrary to what was expected, the dissolution of the spheres/fibers results in increasing fluorescence anisotropy over time. This is explained in terms of HomoFRET between phenylalanine residues with a T-shaped π-stacking mode, which was determined in another study to be the dominant mode through atomistic simulations and semiempirical calculations. Kelvin probe force microscopy measurements indicate that the spheres and fibers have a conductivity comparable to that of gold. Hence, these self-assembled structures might be applicable in organic solid-state electronic devices. The dissolution properties of the spheres further suggest that they might be used as drug-delivery systems.

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Bioorganic nanodots for non-volatile memory devices

Cited by 13 publications

References 38 publications

Macroscale Biomolecular Electronics and Ionics

Macroscale Biomolecular Electronics and Ionics

Peptide Nanophotonics: From Optical Waveguiding to Precise Medicine and Multifunctional Biochips

The Physical Properties and Self‐Assembly Potential of the RFFFR Peptide

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