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Showing 25 to 36 of 274 entries
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A cathodoluminescence study of the influence of the seed particle preparation method on the optical properties of GaAs nanowires.

Nanotechnology

Gustafsson A, Hillerich K, Messing ME, Storm K, Dick KA, Deppert K, Bolinsson J.
PMID: 22699683
Nanotechnology. 2012 Jul 05;23(26):265704. doi: 10.1088/0957-4484/23/26/265704. Epub 2012 Jun 15.

Cathodoluminescence at 8 K is used to compare the optical properties of AlGaAs-capped GaAs nanowires, grown by metal-organic vapour phase epitaxy and seeded by gold particles prepared by different methods. Six different methods were used to fabricate and deposit...

InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit.

Science (New York, N.Y.)

Wallentin J, Anttu N, Asoli D, Huffman M, Aberg I, Magnusson MH, Siefer G, Fuss-Kailuweit P, Dimroth F, Witzigmann B, Xu HQ, Samuelson L, Deppert K, Borgström MT.
PMID: 23328392
Science. 2013 Mar 01;339(6123):1057-60. doi: 10.1126/science.1230969. Epub 2013 Jan 17.

Photovoltaics based on nanowire arrays could reduce cost and materials consumption compared with planar devices but have exhibited low efficiency of light absorption and carrier collection. We fabricated a variety of millimeter-sized arrays of p-type/intrinsic/n-type (p-i-n) doped InP nanowires...

Precursor evaluation for in situ InP nanowire doping.

Nanotechnology

Borgström MT, Norberg E, Wickert P, Nilsson HA, Trägårdh J, Dick KA, Statkute G, Ramvall P, Deppert K, Samuelson L.
PMID: 21832734
Nanotechnology. 2008 Nov 05;19(44):445602. doi: 10.1088/0957-4484/19/44/445602. Epub 2008 Sep 29.

The use of tetraethyltin (TESn) and dimethylzinc (DMZn) as in situ n- and p-dopant precursors during particle-assisted growth of InP nanowires is reported. Gate voltage dependent transport measurements demonstrate that the nanowires can be predictably synthesized as either n-...

Controlling the Self-Metalation Rate of Tetraphenylporphyrins on Cu(111) via Cyano Functionalization.

Angewandte Chemie (International ed. in English)

Lepper M, Köbl J, Zhang L, Meusel M, Hölzel H, Lungerich D, Jux N, de Siervo A, Meyer B, Steinrück HP, Marbach H.
PMID: 29714820
Angew Chem Int Ed Engl. 2018 Aug 06;57(32):10074-10079. doi: 10.1002/anie.201803601. Epub 2018 Jun 14.

The reaction rate of the self-metalation of free-base tetraphenylporphyrins (TPPs) on Cu(111) increases with the number of cyano groups (n=0, 1, 2, 4) attached at the para positions of the phenyl rings. The findings are based on isothermal scanning...

Sonographic Venous Velocity Index Identifies Patients with Chronic Kidney Disease and Severe Diastolic Dysfunction.

Ultrasound international open

Meier M, Johannes Jabs W, Guthmann M, Geppert G, Aydin A, Nitschke M.
PMID: 30370402
Ultrasound Int Open. 2018 Oct;4(4):E142-E148. doi: 10.1055/a-0684-9483. Epub 2018 Oct 25.

OBJECTIVE: Diagnosing cardiorenal syndrome (CRS) in patients with chronic kidney disease (CKD) continues to remain challenging in outpatient practice. In this study, we investigate whether a newly developed venous velocity ultrasound index (VVI) can differentiate between patients with CRS...

Multiple Strokes Associated With Elongation of the Hyoid Bone.

The Neurohospitalist

Ludt C, Leppert M, Jones A, Song J, Kuwayama D, Pastula DM, Poisson S.
PMID: 29276562
Neurohospitalist. 2018 Jan;8(1):35-37. doi: 10.1177/1941874417706220. Epub 2017 Apr 28.

Hyoid bone elongation is an uncommon cause of stroke. Here, we report a case of hyoid bone elongation causing localized trauma to the internal carotid artery, resulting in multiple strokes. A 32-year-old woman presented with unilateral weakness and history...

From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of ^{100-130}Cd.

Physical review letters

Hammen M, Nörtershäuser W, Balabanski DL, Bissell ML, Blaum K, Budinčević I, Cheal B, Flanagan KT, Frömmgen N, Georgiev G, Geppert C, Kowalska M, Kreim K, Krieger A, Nazarewicz W, Neugart R, Neyens G, Papuga J, Reinhard PG, Rajabali MM, Schmidt S, Yordanov DT.
PMID: 30240248
Phys Rev Lett. 2018 Sep 07;121(10):102501. doi: 10.1103/PhysRevLett.121.102501.

Differences in mean-square nuclear charge radii of ^{100-130}Cd are extracted from high-resolution collinear laser spectroscopy of the 5s ^{2}S_{1/2}→5p ^{2}P_{3/2} transition of the ion and from the 5s5p ^{3}P_{2}→5s6s ^{3}S_{1} transition in atomic Cd. The radii show a smooth...

Wild-type p53 is not involved in reversion of the tumorigenic phenotype of breast-cancer cells after transfer of normal chromosome-17.

International journal of oncology

Theile M, Hartmann S, Naundorf H, Ruess D, Elbe B, Krause H, Deppert W, Barrett J, Scherneck S.
PMID: 21567021
Int J Oncol. 1994 May;4(5):1067-75. doi: 10.3892/ijo.4.5.1067.

A number of different candidate tumor suppressor genes involved in human breast cancer are presumed to be located on chromosome 17. To verify the relevance of chromosome 17 abnormalities in breast cancer cells, a normal human chromosome 17 was...

Maximum Proton Energy above 85 MeV from the Relativistic Interaction of Laser Pulses with Micrometer Thick CH_{2} Targets.

Physical review letters

Wagner F, Deppert O, Brabetz C, Fiala P, Kleinschmidt A, Poth P, Schanz VA, Tebartz A, Zielbauer B, Roth M, Stöhlker T, Bagnoud V.
PMID: 27258872
Phys Rev Lett. 2016 May 20;116(20):205002. doi: 10.1103/PhysRevLett.116.205002. Epub 2016 May 19.

We present a study of laser-driven ion acceleration with micrometer and submicrometer thick plastic targets. Using laser pulses with high temporal contrast and an intensity of the order of 10^{20}  W/cm^{2} we observe proton beams with cutoff energies in...

Comparison of analgesia, adverse effects, and quality of life in cancer patients during treatment of procedural pain with intravenous morphine, fentanyl nasal spray, and fentanyl buccal tablets.

Cancer management and research

Piotrowska W, Leppert W, Majkowicz M.
PMID: 30863169
Cancer Manag Res. 2019 Feb 18;11:1587-1600. doi: 10.2147/CMAR.S179012. eCollection 2019.

AIM: Comparison of analgesia, adverse effects, and quality of life (QoL) of cancer patients in the treatment of procedural pain induced by nursing procedures with the use of intravenous morphine, fentanyl nasal spray, and fentanyl buccal tablets.METHODS: In adults...

Granular Carbon-Based Electrodes as Cathodes in Methane-Producing Bioelectrochemical Systems.

Frontiers in bioengineering and biotechnology

Liu D, Roca-Puigros M, Geppert F, Caizán-Juanarena L, Na Ayudthaya SP, Buisman C, Ter Heijne A.
PMID: 29946543
Front Bioeng Biotechnol. 2018 Jun 12;6:78. doi: 10.3389/fbioe.2018.00078. eCollection 2018.

Methane-producing bioelectrochemical systems generate methane by using microorganisms to reduce carbon dioxide at the cathode with external electricity supply. This technology provides an innovative approach for renewable electricity conversion and storage. Two key factors that need further attention are...

Formation of Highly Ordered Molecular Porous 2D Networks from Cyano-Functionalized Porphyrins on Cu(111).

Chemistry (Weinheim an der Bergstrasse, Germany)

Adhikari R, Siglreithmaier G, Gurrath M, Meusel M, Kuliga J, Lepper M, Hölzel H, Jux N, Meyer B, Steinrück HP, Marbach H.
PMID: 32573877
Chemistry. 2020 Oct 21;26(59):13408-13418. doi: 10.1002/chem.202001980. Epub 2020 Sep 17.

We investigated the adsorption of three related cyano-functionalized tetraphenyl porphyrin derivatives on Cu(111) by scanning tunneling microscopy (STM) in ultra-high vacuum (UHV) with the goal to identify the role of the cyano group and the central Cu atom for...

Showing 25 to 36 of 274 entries