Searched for: subject:"microscopy"
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Ren, Y. (author), Kruit, P. (author)
Our group is developing a multibeam scanning electron microscope (SEM) with 196 beams in order to increase the throughput of SEM. Three imaging systems using, respectively, transmission electron detection, secondary electron detection, and backscatter electron detection are designed in order to make it as versatile as a single beam SEM. This...
journal article 2016
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Ushakova, K. (author)
doctoral thesis 2016
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Puspitasari, I. (author)
The objectives of this PhD project are to address the challenges of in-situ TEM and introduce a new generation of in-situ TEM equipment. In Chapter 2 the in-situ TEM facilities are introduced, focusing on the nanoreactor that has gone through quite some development stages during this project. Several types of in-situ TEM nanoreactors were...
doctoral thesis 2016
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Tiruvadi Krishnan, S. (author)
All living organisms pass on their genetic information to their offspring in the form of DNA or RNA molecules by duplicating them across generations. In the bacteria, their genes are packed in long chains of DNA molecules or chromosomes. One of the widely studied model organisms, Escherichia coli, replicates its circular chromosome in two...
doctoral thesis 2016
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Antolović, I.M. (author), Burri, S (author), Hoebe, RA (author), Maruyama, Yuki (author), Bruschini, Claudio (author), Charbon, E.E.E. (author)
The paper presents a camera comprising 512 × 128 pixels capable of single-photon detection and gating with a maximum frame rate of 156 kfps. The photon capture is performed through a gated single-photon avalanche diode that generates a digital pulse upon photon detection and through a digital one-bit counter. Gray levels are obtained through...
journal article 2016
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Nahar, S.N. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Schitter, G (author), Scarpas, Athanasios (author)
Self-healing of bitumen is a property that positively contributes to the sustainability, maintenance requirements and cost effectiveness of asphalt pavements. Ideally one would like to design an asphalt mix with a well-defined healing potential. Although substantial research efforts have been dedicated to the healing mechanism in bitumen,...
conference paper 2016
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De Martino, M. (author)
doctoral thesis 2016
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Homulle, Harald (author), Powolny, F (author), Stegehuis, PL (author), Dijkstra, J (author), Li, DU (author), Homicsko, K (author), Rimoldi, D. (author), Muehlethaler, K. (author), Prior, JO (author), Sinisi, R (author), Dubikovskaya, E (author), Charbon, E.E.E. (author), Bruschini, Claudio (author)
In near infrared fluorescence-guided surgical oncology, it is challenging to distinguish healthy from cancerous tissue. One promising research avenue consists in the analysis of the exogenous fluorophores’ lifetime, which are however in the (sub-)nanosecond range. We have integrated a single-photon pixel array, based on standard CMOS SPADs ...
journal article 2016
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de Visser, P.J. (author), Chua, Rebekah (author), Island, J.O. (author), Finkel, M. (author), Katan, A.J. (author), Thierschmann, H.R. (author), van der Zant, H.S.J. (author), Klapwijk, T.M. (author)
Thin layers of black phosphorus present an ideal combination of a 2Dmaterial with a tunable direct bandgap and high carrier mobility. However the material suffers from degradation in ambient conditions due to an oxidation reaction which involves water, oxygen and light. Wehave measured the spatial profile of the conductivity on flakes of...
journal article 2016
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Copuroglu, O. (author)
Plane and crossed polarization are the two standard light modes in polarized light microscopy that are widely used to characterize crystalline and amorphous phases in cement-based materials. However, the use of the crossed polarized light mode has been found to be restrictive for studying birefringent phases quantitatively due to the extinction...
journal article 2016
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Nahar, S.N. (author)
During the service life of flexible asphalt pavements, asphalt concrete degrades due to traffic loading and environmental conditions like temperature, rain, oxidation, ultraviolet-radiation from the sun. All these environmental factors have adverse effects on the performance of bitumen, which is the binder of asphalt concrete. They are known to...
doctoral thesis 2016
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Moerland, R.J. (author), Hoogenboom, J.P. (author)
Available data: Complex refractive index of Indium Tin Oxide, http://dx.doi.org/10.4121/uuid:59febf27-a532-4ac9-8ec0-29d4195b2c8c Transparent conductive oxides (TCOs), such as the well-known indium-tin oxide, find widespread use in modern (nano)technological applications because of their unique combination of negligible optical absorption and...
journal article 2016
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Wilding, D. (author), Pozzi, P. (author), Soloviev, O.A. (author), Vdovine, Gleb (author), Verhaegen, M.H.G. (author)
Aberrations, scattering and absorption degrade the performance light-sheet fluorescence microscopes (LSFM). An adaptive optics system to correct for these artefacts and to optimize the light-sheet illumination is presented. This system allows a higher axial resolution to be recovered over the field-of-view of the detection objective. It is...
conference paper 2016
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Verduin, T. (author), Lokhorst, S.R. (author), Hagen, C.W. (author), Kruit, P. (author)
In the simulation of secondary electron yields (SEY) and secondary electron microscopy (SEM) images, there is always the question: are we using the correct scattering cross-sections?. The three scattering processes of interest are quasi-elastic phonon scattering, elastic Mott scattering and inelastic scattering using the dielectric function...
journal article 2016
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Gonnissen, J (author), De Backer, A (author), den Dekker, A.J. (author), Sijbers, J. (author), Van Aert, S. (author)
In the present paper, the optimal detector design is investigated for both detecting and locating light atoms from high resolution scanning transmission electron microscopy (HR STEM) images. The principles of detection theory are used to quantify the probability of error for the detection of light atoms from HR STEM images. To determine the...
journal article 2016
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Pozzi, P. (author), Wilding, D. (author), Soloviev, O.A. (author), Vdovine, Gleb (author), Verhaegen, M.H.G. (author)
This proceeding reports early results in the development of a new technique for adaptive optics in confocal microscopy. The term adaptive optics refers to the branch of optics in which an active element in the optical system is used to correct inhomogeneities in the media through which light propagates. In its most classical form, mostly used in...
conference paper 2016
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Fabre, A. (author), Salameh, S. (author), Colombi Ciacchi, Lucio (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
Efficient nanopowder processing requires knowledge of the powder’s mechanical properties. Due to the large surface area to volume ratio, nanoparticles experience relatively strong attractive interactions, leading to the formation of micron-size porous structures called agglomerates. Significant effort has been directed towards the development of...
journal article 2016
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Moerland, R.J. (author), Weppelman, I.G.C. (author), Garming, M.W.H. (author), Kruit, P. (author), Hoogenboom, J.P. (author)
We show cathodoluminescence-based time-resolved electron beam spectroscopy in order to directly probe the spontaneous emission decay rate that is modified by the local density of states in a nanoscale environment. In contrast to dedicated laser-triggered electron-microscopy setups, we use commercial hardware in a standard SEM, which allows us to...
journal article 2016
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Van Aert, Sandra (author), De Backer, Annick (author), Martinez, Gerardo T. (author), den Dekker, A.J. (author), Van Dyck, Dirk (author), Bals, Sara (author), Van Tendeloo, Gustaaf (author)
The increasing need for precise determination of the atomic arrangement of non-periodic structures in materials design and the control of nanostructures explains the growing interest in quantitative transmission electron microscopy. The aim is to extract precise and accurate numbers for unknown structure parameters including atomic positions,...
journal article 2016
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Yoo, H.W. (author), van Royen, M.E. (author), van Cappellen, WA (author), Houtsmuller, AB (author), Verhaegen, M.H.G. (author), Schitter, G (author)
The pinhole plays an important role in confocal laser scanning microscopy (CLSM) for adaptive optics (AO) as well as in imaging, where the size of the pinhole denotes a trade-off between out-of-focus rejection and wavefront distortion. This contribution proposes an AO system for a commercial CLSM with an adjustable square pinhole to cope with...
conference paper 2016
Searched for: subject:"microscopy"
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