Repository logo
 
Publication

Optical transparency and electrical conductivity of intermediate filaments in Muller cells and single-wall carbon nanotubes

2019-03Journal article Restricted access
Simple item page
dc.contributor.authorKhmelinskii, Igor
dc.contributor.authorMakarov, Vladimir
dc.date.accessioned2020-07-24T10:52:48Z
dc.date.available2020-07-24T10:52:48Z
dc.date.issued2019-03
dc.description.abstractPresently we investigated the electrical conductivity and optical transparency of Muller cell intermediate filaments. For comparison, the same properties were also explored in the model system of single-wall carbon nanotubes. We report the method of separation and purification of porcine (Sus scrofa domestica) intermediate filaments, extracted from the retinal Muller cells. We also report experimental and theoretical methods of measurements and calculations of the resistivity and light transmission yield by the intermediate filaments and single wall carbon nanotubes. The measured resistivity values were (4.7 +/- 0.3) x 10(-4) and (2.8 +/- 0.2) x 10(-4) Omega.m(-1).cm(2) at 5 degrees C (278 K), for the intermediate filaments and single wall carbon nanotubes, respectively, being quite close to those of typical metals. We report a method for measuring the light energy transmission by these nanostructures. We found that they efficiently transfer excitation energy along their axis, with the light reemitted at their other end. The measured yields of transferred light energy were 0.50 +/- 0.03 and 0.26 +/- 0.02 for intermediate filaments and single wall carbon nanotubes, respectively (lambda(exc) = 546.1 nm
dc.description.abstractT = 288 K). The reported results are novel, providing a direct confirmation of the earlier proposed quantum mechanism of light energy transport in the inverted retina of vertebrates. Our data also show that Muller cell intermediate filaments, in addition to their cytoskeletal function, are capable of providing for the light energy transfer within the inverted retina. The data obtained enable a significant progress in our understanding of the high-contrast vision of the vertebrate eyes. The most important conclusion of the current study is the discovery of light energy propagation along natural biological nanofibers (intermediate filaments). This result is completely novel and unique, being reported for the first time.
dc.description.sponsorshipInstitute for Functional Nanomaterials (NSF) [1002410]
dc.description.sponsorshipPR NASA EPSCoR (NASA)National Aeronautics & Space Administration (NASA) [NNX15AK43A]
dc.identifier.doi10.1016/j.chemphys.2018.11.020
dc.identifier.issn0301-0104
dc.identifier.issn1873-4421
dc.identifier.urihttp://hdl.handle.net/10400.1/14407
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier Science Bv
dc.subjectCdna sequence
dc.subjectSpectroscopy
dc.subjectSelectivity
dc.subjectProteins
dc.subjectDynamics
dc.subjectKeratin
dc.subjectFibers
dc.subjectModel
dc.titleOptical transparency and electrical conductivity of intermediate filaments in Muller cells and single-wall carbon nanotubes
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage20
oaire.citation.startPage6
oaire.citation.titleChemical Physics
oaire.citation.volume519
person.familyNameKhmelinskii
person.givenNameIgor
person.identifier0000000420541031
person.identifier.ciencia-id0D1A-CB6C-6316
person.identifier.orcid0000-0002-6116-184X
person.identifier.ridC-9587-2011
person.identifier.scopus-author-id6701444934
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationfcb9f09f-2e99-41fb-8c08-7e1acbc65076
relation.isAuthorOfPublication.latestForDiscoveryfcb9f09f-2e99-41fb-8c08-7e1acbc65076

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
14407.pdf
Size:
2.64 MB
Format:
Adobe Portable Document Format
Download

Collections

FCT2-Artigos (em revistas ou actas indexadas)