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Journal of Microscopy, Ahead of Print. (Source: Journal of Microscopy)
Source: Journal of Microscopy - November 8, 2017 Category: Laboratory Medicine Source Type: research
Observation of metal nanoparticles at atomic resolution in Pt ‐based cancer chemotherapeutics
Journal of Microscopy,Volume 270, Issue 1, Page 92-97, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Source Type: research
Characterisation of lattice damage formation in tantalum irradiated at variable temperatures
Journal of Microscopy,Volume 270, Issue 1, Page 110-117, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Source Type: research
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Journal of Microscopy,Volume 270, Issue 1, Page 92-97, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Source Type: research
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Journal of Microscopy,Volume 270, Issue 1, Page 110-117, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Source Type: research
Phase retrieval based on coded splitting modulation
Summary
A new coded splitting imaging technique is proposed to reconstruct the complex amplitude of a light field iteratively using a single‐shot measurement. In this technique, a specially designed coded splitting plate is adopted to diffract the illuminating beam into multiple beams of different orders and code their wavefronts independently and differently. From the diffraction pattern array recorded on the detector plane, both the modulus and phase distributions of the illuminating beam can be reconstructed iteratively using known transmission functions of different orders of the coded splitting plate. The feasibilit...
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Authors: Y. YAO, X. HE, C. LIU, JIANQIANG ZHU Tags: Original Article Source Type: research
Probing the effect of polymer molecular weight on penetration into the wood cell wall using polyethylenimine (PEI) as a model compound
Summary
Decking is one of the largest applications for the treated wood market. The most challenging property to obtain for treated wood is dimensional stability, which can be achieved, in part, by cell wall bulking, cell wall polymer crosslinking and removal of hygroscopic components in the cell wall. A commonly accepted key requirement is for the actives to infuse through the cell wall, which has a microporosity of ∼5–13 nm. Equally as challenging is being able to measure and quantify the cell wall penetration. Branched polyethylenimine (PEI) was studied as a model polymer for penetration due to its water solubility,...
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Authors: BRIAN DORVEL, PRAVEENKUMAR BOOPALACHANDRAN, IDA CHEN, ANDREW BOWLING, KERRY WILLIAMS, STEVE KING Tags: Original Article Source Type: research
Observation of metal nanoparticles at atomic resolution in Pt ‐based cancer chemotherapeutics
Summary
The chemotherapeutics cisplatin and oxaliplatin are important tools in the fight against cancer. Both compounds are platinum complexes. Aberration‐corrected scanning transmission electron microscopy using the annular dark‐field imaging mode now routinely provides single‐atom sensitivity with atomic number contrast. Here, this imaging mode is used to directly image the platinum within the two drugs in their dried form on an amorphous carbon support film. The oxaliplatin is found to have wetted the supporting amorphous carbon, forming disordered clusters suggesting that the platinum has remained within the comp...
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Authors: A.A. SHEADER, A.M. VARAMBHIA, R.A. FLECK, S.J.L. FLATTERS, P.D. NELLIST Tags: Original Article Source Type: research
Characterisation of lattice damage formation in tantalum irradiated at variable temperatures
Summary
The formation of radiation‐induced dislocation loops and voids in tantalum at 180(2), 345(3) and 590(5)°C was assessed by 3MeV proton irradiation experiments and subsequent damage characterisation using transmission electron microscopy. Voids formed at 345(3)°C and were arranged into a body centred cubic lattice at a damage level of 0.55 dpa. The low vacancy mobility at 180(2)°C impedes enough vacancy clustering and therefore the formation of voids visible by TEM. At 590(5)°C the Burgers vector of the interstitial‐type dislocation loops is a<100>, instead of the a/2 <111> Burgers vector characte...
Source: Journal of Microscopy - November 1, 2017 Category: Laboratory Medicine Authors: I. IPATOVA, P.T. WADY, S.M. SHUBEITA, C. BARCELLINI, A. IMPAGNATIELLO, E. JIMENEZ ‐MELERO Tags: Original Article Source Type: research
Imaging connected porosity of crystalline rock by contrast agent ‐aided X‐ray microtomography and scanning electron microscopy
Summary
We set out to study connected porosity of crystalline rock using X‐ray microtomography and scanning electron microscopy with energy dispersive X‐ray spectroscopy (SEM‐EDS) with caesium chloride as a contrast agent. Caesium is an important radionuclide regarding the final deposition of nuclear waste and also forms dense phases that can be readily distinguished by X‐ray microtomography and SEM‐EDS. Six samples from two sites, Olkiluoto (Finland) and Grimsel (Switzerland), where transport properties of crystalline rock are being studied in situ, were investigated using X‐ray microtomography and SEM‐EDS. ...
Source: Journal of Microscopy - October 27, 2017 Category: Laboratory Medicine Authors: J. KUVA, J. SAMMALJ ÄRVI, J. PARKKONEN, M. SIITARI‐KAUPPI, M. LEHTONEN, T. TURPEINEN, J. TIMONEN, M. VOUTILAINEN Tags: Original Article Source Type: research
Algorithmic structural segmentation of defective particle systems: a lithium ‐ion battery study
Journal of Microscopy,Volume 270, Issue 1, Page 71-82, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - October 26, 2017 Category: Laboratory Medicine Source Type: research
Imaging connected porosity of crystalline rock by contrast agent ‐aided X‐ray microtomography and scanning electron microscopy
Journal of Microscopy,Volume 270, Issue 1, Page 98-109, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - October 26, 2017 Category: Laboratory Medicine Source Type: research
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Journal of Microscopy,Volume 270, Issue 1, Page 71-82, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - October 26, 2017 Category: Laboratory Medicine Source Type: research
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Journal of Microscopy,Volume 270, Issue 1, Page 98-109, April 2018. (Source: Journal of Microscopy)
Source: Journal of Microscopy - October 26, 2017 Category: Laboratory Medicine Source Type: research
Algorithmic structural segmentation of defective particle systems: a lithium ‐ion battery study
We describe a segmentation algorithm that is able to identify defects (cracks, holes and breakages) in particle systems. This information is used to segment image data into individual particles, where each particle and its defects are identified accordingly. We apply the method to particle systems that appear in Li‐ion battery electrodes. First, the algorithm is validated using simulated data from a stochastic 3D microstructure model, where we have full information about defects. This allows us to quantify the accuracy of the segmentation result. Then we show that the algorithm can successfully be applied to tomographic ...
Source: Journal of Microscopy - October 26, 2017 Category: Laboratory Medicine Authors: D. WESTHOFF, D.P. FINEGAN, P.R. SHEARING, V. SCHMIDT Tags: Original Article Source Type: research
