TY - JOUR
T1 - Graphene oxide single sheets as substrates for high resolution cryoTEM
AU - van de Put, Marcel W. P.
AU - Patterson, Joseph P.
AU - Bomans, Paul H. H.
AU - Wilson, Neil R.
AU - Friedrich, Heiner
AU - van Benthem, Rolf A. T. M.
AU - de With, Gijsbertus
AU - O'Reilly, Rachel K.
AU - Sommerdijk, Nico A. J. M.
PY - 2015/2/21
Y1 - 2015/2/21
N2 - CryoTEM is an important tool in the analysis of soft matter, where generally defocus conditions are used to enhance the contrast in the images, but this is at the expense of the maximum resolution that can be obtained. Here, we demonstrate the use of graphene oxide single sheets as support for the formation of 10 nm thin films for high resolution cryoTEM imaging, using DNA as an example. With this procedure, the overlap of objects in the vitrified film is avoided. Moreover, in these thin films less background scattering occurs and as a direct result, an increased contrast can be observed in the images. Hence, imaging closer to focus as compared with conventional cryoTEM procedures is achieved, without losing contrast. In addition, we demonstrate an ∼1.8 fold increase in resolution, which is crucial for accurate size analysis of nanostructures.
AB - CryoTEM is an important tool in the analysis of soft matter, where generally defocus conditions are used to enhance the contrast in the images, but this is at the expense of the maximum resolution that can be obtained. Here, we demonstrate the use of graphene oxide single sheets as support for the formation of 10 nm thin films for high resolution cryoTEM imaging, using DNA as an example. With this procedure, the overlap of objects in the vitrified film is avoided. Moreover, in these thin films less background scattering occurs and as a direct result, an increased contrast can be observed in the images. Hence, imaging closer to focus as compared with conventional cryoTEM procedures is achieved, without losing contrast. In addition, we demonstrate an ∼1.8 fold increase in resolution, which is crucial for accurate size analysis of nanostructures.
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349557100004&KeyUID=WOS:000349557100004
U2 - 10.1039/c4sm02587c
DO - 10.1039/c4sm02587c
M3 - Article
SN - 1744-683X
VL - 11
SP - 1265
EP - 1270
JO - Soft Matter
JF - Soft Matter
IS - 7
ER -