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Showing 1 to 12 of 3331 entries
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Blind deconvolution of time-of-flight mass spectra from atom probe tomography.

Ultramicroscopy

Johnson LJ, Thuvander M, Stiller K, Odén M, Hultman L.
PMID: 23607992
Ultramicroscopy. 2013 Sep;132:60-4. doi: 10.1016/j.ultramic.2013.03.015. Epub 2013 Mar 29.

A major source of uncertainty in compositional measurements in atom probe tomography stems from the uncertainties of assigning peaks or parts of peaks in the mass spectrum to their correct identities. In particular, peak overlap is a limiting factor,...

Reconstructing atom probe data: a review.

Ultramicroscopy

Vurpillot F, Gault B, Geiser BP, Larson DJ.
PMID: 23607993
Ultramicroscopy. 2013 Sep;132:19-30. doi: 10.1016/j.ultramic.2013.03.010. Epub 2013 Mar 26.

Atom probe tomography stands out from other materials characterisation techniques mostly due to its capacity to map individual atoms in three-dimensions with high spatial resolution. The methods used to transform raw detector data into a three-dimensional reconstruction have, comparatively...

Atomic-scale distribution of impurities in CuInSe2-based thin-film solar cells.

Ultramicroscopy

Cojocaru-Mirédin O, Choi P, Wuerz R, Raabe D.
PMID: 21288643
Ultramicroscopy. 2011 May;111(6):552-6. doi: 10.1016/j.ultramic.2010.12.034. Epub 2011 Jan 11.

Atom Probe Tomography was employed to investigate the distribution of impurities, in particular sodium and oxygen, in a CuInSe(2)-based thin-film solar cell. It could be shown that sodium, oxygen, and silicon diffuse from the soda lime glass substrate into...

Atom-probe for FinFET dopant characterization.

Ultramicroscopy

Kambham AK, Mody J, Gilbert M, Koelling S, Vandervorst W.
PMID: 21288644
Ultramicroscopy. 2011 May;111(6):535-9. doi: 10.1016/j.ultramic.2011.01.017. Epub 2011 Jan 18.

With the continuous shrinking of transistors and advent of new transistor architectures to keep in pace with Moore's law and ITRS goals, there is a rising interest in multigate 3D-devices like FinFETs where the channel is surrounded by gates...

In situ electron holographic study of Ionic liquid.

Ultramicroscopy

Shirai M, Tanigaki T, Aizawa S, Park HS, Matsuda T, Shindo D.
PMID: 25171751
Ultramicroscopy. 2014 Nov;146:125-9. doi: 10.1016/j.ultramic.2014.08.003. Epub 2014 Aug 10.

Investigation of the effect of electron irradiation on ionic liquid (IL) droplets using electron holography revealed that electron irradiation changed the electrostatic potential around the IL. The potential for low electron flux irradiation (0.5 × 10(17)e/m(2)s) was almost constant...

Design of an ultra-miniaturized electron optical microcolumn with sub-5 nm very high resolution.

Ultramicroscopy

Oh TS, Kim HS, Ahn S, Kim DW.
PMID: 24184680
Ultramicroscopy. 2014 Jan;136:171-5. doi: 10.1016/j.ultramic.2013.10.003. Epub 2013 Oct 17.

The achievement of a microminiaturized electrostatic electron optical column with very-high-resolution probe beam is an important challenge in the fields of electron beam lithography, metrology, and inspection for semiconductor and/or display devices. In this study, we propose an ultra-miniaturized,...

StatSTEM: An efficient approach for accurate and precise model-based quantification of atomic resolution electron microscopy images.

Ultramicroscopy

De Backer A, van den Bos KHW, Van den Broek W, Sijbers J, Van Aert S.
PMID: 27657649
Ultramicroscopy. 2016 Dec;171:104-116. doi: 10.1016/j.ultramic.2016.08.018. Epub 2016 Aug 31.

An efficient model-based estimation algorithm is introduced to quantify the atomic column positions and intensities from atomic resolution (scanning) transmission electron microscopy ((S)TEM) images. This algorithm uses the least squares estimator on image segments containing individual columns fully accounting...

Compressed sensing for STEM tomography.

Ultramicroscopy

Donati L, Nilchian M, Trépout S, Messaoudi C, Marco S, Unser M.
PMID: 28411510
Ultramicroscopy. 2017 Aug;179:47-56. doi: 10.1016/j.ultramic.2017.04.003. Epub 2017 Apr 06.

A central challenge in scanning transmission electron microscopy (STEM) is to reduce the electron radiation dosage required for accurate imaging of 3D biological nano-structures. Methods that permit tomographic reconstruction from a reduced number of STEM acquisitions without introducing significant...

Mapping buried nanostructures using subsurface ultrasonic resonance force microscopy.

Ultramicroscopy

van Es MH, Mohtashami A, Thijssen RMT, Piras D, van Neer PLMJ, Sadeghian H.
PMID: 28968522
Ultramicroscopy. 2018 Jan;184:209-216. doi: 10.1016/j.ultramic.2017.09.005. Epub 2017 Sep 23.

Nondestructive subsurface nanoimaging of buried nanostructures is considered to be extremely challenging and is essential for the reliable manufacturing of nanotechnology products such as three-dimensional (3D) transistors, 3D NAND memory, and future quantum electronics. In scanning probe microscopy (SPM),...

Sparse modeling of EELS and EDX spectral imaging data by nonnegative matrix factorization.

Ultramicroscopy

Shiga M, Tatsumi K, Muto S, Tsuda K, Yamamoto Y, Mori T, Tanji T.
PMID: 27529804
Ultramicroscopy. 2016 Nov;170:43-59. doi: 10.1016/j.ultramic.2016.08.006. Epub 2016 Aug 06.

Advances in scanning transmission electron microscopy (STEM) techniques have enabled us to automatically obtain electron energy-loss (EELS)/energy-dispersive X-ray (EDX) spectral datasets from a specified region of interest (ROI) at an arbitrary step width, called spectral imaging (SI). Instead of...

Numerical modeling of specimen geometry for quantitative energy dispersive X-ray spectroscopy.

Ultramicroscopy

Xu W, Dycus JH, LeBeau JM.
PMID: 28886487
Ultramicroscopy. 2018 Jan;184:100-108. doi: 10.1016/j.ultramic.2017.08.015. Epub 2017 Sep 01.

Transmission electron microscopy specimens typically exhibit local distortion at thin foil edges, which can influence the absorption of X-rays for quantitative energy dispersive X-ray spectroscopy (EDS). Here, we report a numerical, three-dimensional approach to model the geometry of general...

Applications and limitations of electron correlation microscopy to study relaxation dynamics in supercooled liquids.

Ultramicroscopy

Zhang P, He L, Besser MF, Liu Z, Schroers J, Kramer MJ, Voyles PM.
PMID: 27638332
Ultramicroscopy. 2017 Jul;178:125-130. doi: 10.1016/j.ultramic.2016.09.001. Epub 2016 Sep 08.

Electron correlation microscopy (ECM) is a way to measure structural relaxation times, τ, of liquids with nanometer-scale spatial resolution using coherent electron scattering equivalent of photon correlation spectroscopy. We have applied ECM with a 3.5nm diameter probe to Pt

Showing 1 to 12 of 3331 entries