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Showing 1 to 10 of 10 entries
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Low Thermal Conductivity through Dense Particle Packings with Optimum Disorder.

Advanced materials (Deerfield Beach, Fla.)

Nutz FA, Philipp A, Kopera BAF, Dulle M, Retsch M.
PMID: 29484721
Adv Mater. 2018 Apr;30(14):e1704910. doi: 10.1002/adma.201704910. Epub 2018 Feb 27.

Heat transport plays a critical role in modern batteries, electrodes, and capacitors. This is caused by the ongoing miniaturization of such nanotechnological devices, which increases the local power density and hence temperature. Even worse, the introduction of heterostructures and...

Ordered Particle Arrays via a Langmuir Transfer Process: Access to Any Two-Dimensional Bravais Lattice.

Langmuir : the ACS journal of surfaces and colloids

Hummel MEJ, Stelling C, Kopera BAF, Nutz FA, Karg M, Retsch M, Förster S.
PMID: 30472854
Langmuir. 2019 Jan 29;35(4):973-979. doi: 10.1021/acs.langmuir.8b03047. Epub 2019 Jan 15.

We demonstrate how to directly transform a close-packed hexagonal colloidal monolayer into nonclose-packed particle arrays of any two-dimensional symmetry at the air/water interface. This major advancement in the field of nanoparticle self-assembly is based on a simple one-dimensional stretching...

Direct Measurement of the In-Plane Thermal Diffusivity of Semitransparent Thin Films by Lock-In Thermography: An Extension of the Slopes Method.

Analytical chemistry

Philipp A, Pech-May NW, Kopera BAF, Lechner AM, Rosenfeldt S, Retsch M.
PMID: 31148451
Anal Chem. 2019 Jul 02;91(13):8476-8483. doi: 10.1021/acs.analchem.9b01583. Epub 2019 Jun 13.

We present an extension of the well-known slopes method for characterization of the in-plane thermal diffusivity of semitransparent polymer films. We introduce a theoretical model which considers heat losses due to convection and radiation mechanisms, as well as semitransparency...

Multiplexed lock-in thermography.

The Review of scientific instruments

Kopera BAF, Retsch M.
PMID: 33514193
Rev Sci Instrum. 2021 Jan 01;92(1):014902. doi: 10.1063/5.0029001.

Many modern measurement methods for heat transfer work in the frequency domain. A certain average temperature rise in the sample is unavoidable if the sample can only be heated, e.g., by an intensity modulated light source. This average temperature...

"Locus minoris resistentiae" and connective tissue weakness in older women: a case report and literature review on pelvic organ prolapse with inguinal bladder hernia.

BMC women's health

Esber A, Kopera A, Radosa MP, Runnebaum IB, Mothes HK, Mothes AR.
PMID: 34930209
BMC Womens Health. 2021 Dec 20;21(1):425. doi: 10.1186/s12905-021-01554-4.

BACKGROUND: Conditions such as genital prolapse and hernia are known to be related to connective tissue dysfunction. In this report on cases of the rare simultaneous finding of large genital prolapse and post-prolapse repair female inguinal bladder hernia, we...

Computing the 3D Radial Distribution Function from Particle Positions: An Advanced Analytic Approach.

Analytical chemistry

Kopera BAF, Retsch M.
PMID: 30403841
Anal Chem. 2018 Dec 04;90(23):13909-13914. doi: 10.1021/acs.analchem.8b03157. Epub 2018 Nov 16.

The radial distribution function, g( r), is ubiquitously used to analyze the internal structure of particulate systems. However, experimentally derived particle coordinates are always confined to a finite sample volume. This poses a particular challenge on computing g( r):...

"Locus minoris resistentiae" and connective tissue weakness in older women: a case report and literature review on pelvic organ prolapse with inguinal bladder hernia.

BMC women's health

Esber A, Kopera A, Radosa MP, Runnebaum IB, Mothes HK, Mothes AR.
PMID: 34930209
BMC Womens Health. 2021 Dec 20;21(1):425. doi: 10.1186/s12905-021-01554-4.

BACKGROUND: Conditions such as genital prolapse and hernia are known to be related to connective tissue dysfunction. In this report on cases of the rare simultaneous finding of large genital prolapse and post-prolapse repair female inguinal bladder hernia, we...

Thermal transport in binary colloidal glasses: Composition dependence and percolation assessment.

Physical review. E

Ruckdeschel P, Philipp A, Kopera BAF, Bitterlich F, Dulle M, Pech-May NW, Retsch M.
PMID: 29548201
Phys Rev E. 2018 Feb;97(2):022612. doi: 10.1103/PhysRevE.97.022612.

The combination of various types of materials is often used to create superior composites that outperform the pure phase components. For any rational design, the thermal conductivity of the composite as a function of the volume fraction of the...

Tunable Thermoelastic Anisotropy in Hybrid Bragg Stacks with Extreme Polymer Confinement.

Angewandte Chemie (International ed. in English)

Wang Z, Rolle K, Schilling T, Hummel P, Philipp A, Kopera BAF, Lechner AM, Retsch M, Breu J, Fytas G.
PMID: 31714661
Angew Chem Int Ed Engl. 2020 Jan 13;59(3):1286-1294. doi: 10.1002/anie.201911546. Epub 2019 Dec 04.

Controlling thermomechanical anisotropy is important for emerging heat management applications such as thermal interface and electronic packaging materials. Whereas many studies report on thermal transport in anisotropic nanocomposite materials, a fundamental understanding of the interplay between mechanical and thermal...

Circular Dichroism of Chiral Nematic Films of Cellulose Nanocrystals Loaded with Plasmonic Nanoparticles.

ACS nano

Querejeta-Fernández A, Kopera B, Prado KS, Klinkova A, Methot M, Chauve G, Bouchard J, Helmy AS, Kumacheva E.
PMID: 26336902
ACS Nano. 2015 Oct 27;9(10):10377-85. doi: 10.1021/acsnano.5b04552. Epub 2015 Sep 09.

In the search for induced chiral plasmonic activity, cholesteric films formed by cellulose nanocrystals have attracted great interest as potential hosts for plasmonic nanoparticles. Circular dichroism (CD) spectra of the composite films exhibit two peaks, one of which is...

Showing 1 to 10 of 10 entries