SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Reisner B.) srt2:(2005-2009)"

Sökning: WFRF:(Reisner B.) > (2005-2009)

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Reisner, Walter, et al. (författare)
  • Directed self-organization of single DNA molecules in a nanoslit via embedded nanopit arrays
  • 2009
  • Ingår i: Proceedings of the National Academy of Sciences. - : Proceedings of the National Academy of Sciences. - 1091-6490 .- 0027-8424. ; 106:1, s. 79-84
  • Tidskriftsartikel (refereegranskat)abstract
    • We show that arrays of nanopit structures etched in a nanoslit can control the positioning and conformation of single DNA molecules in nanofluidic devices. By adjusting the spacing, organization and placement of the nanopits it is possible to immobilize DNA at predetermined regions of a device without additional chemical modification and achieve a high degree of control over local DNA conformation. DNA can be extended between two nanopits and in closely spaced arrays will self-assemble into "connect-the-dots" conformations consisting of locally pinned segments joined by fluctuating linkers. These results have broad implications for nanotechnology fields that require methods for the nanoscale positioning and manipulation of DNA.
  •  
2.
  • Reisner, Walter, et al. (författare)
  • Nanoconfinement-enhanced conformational response of single DNA molecules to changes in ionic environment
  • 2007
  • Ingår i: Physical Review Letters. - 1079-7114. ; 99:5
  • Tidskriftsartikel (refereegranskat)abstract
    • We show that the ionic environment plays a critical role in determining the configurational properties of DNA confined in silica nanochannels. The extension of DNA in the nanochannels increases as the ionic strength is reduced, almost tripling over two decades in ionic strength for channels around 100x100 nm in dimension. Surprisingly, we find that the variation of the persistence length alone with ionic strength is not enough to explain our results. The effect is due mainly to increasing self-avoidance created by the reduced screening of electrostatic interactions at low ionic strength. To quantify the increase in self-avoidance, we introduce a new parameter into the de Gennes theory: an effective DNA width that gives the increase in the excluded volume due to electrostatic repulsion.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Tegenfeldt, Jonas (2)
Kristensen, Anders (2)
Larsen, Niels B. (2)
Flyvbjerg, Henrik (2)
Reisner, Walter (2)
Beech, Jason (1)
Lärosäte
Lunds universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy