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Generation of broadband VUV light using third-order cascaded processes.

Physical review letters

Misoguti L, Backus S, Durfee CG, Bartels R, Murnane MM, Kapteyn HC.
PMID: 11461465
Phys Rev Lett. 2001 Jul 02;87(1):013601. doi: 10.1103/PhysRevLett.87.013601. Epub 2001 Jun 14.

We report the first demonstration of broadband VUV light generation through cascaded nonlinear wave mixing in a gas. Using a hollow-fiber geometry to achieve broad-bandwidth phase-matching, frequency conversion of ultrashort-pulse Ti:sapphire laser pulses from the visible into the deep...

Ultrabroadband phase-matched optical parametric generation in the ultraviolet by use of guided waves.

Optics letters

Durfee Iii CG, Backus S, Murnane MM, Kapteyn HC.
PMID: 18188300
Opt Lett. 1997 Oct 15;22(20):1565-7. doi: 10.1364/ol.22.001565.

We present what is believed to be the first experimental demonstration of guided-wave phase-matched frequency mixing and harmonic conversion in gases. Broad-bandwidth ultrafast pulses, tunable around 270 nm, were generated from an ultrafast Ti:sapphire amplifier system using 2? +...

Intracavity frequency doubling in a Ti:sapphire laser: generation of 14-fs pulses at 416 nm.

Optics letters

Backus S, Asaki MT, Shi C, Kapteyn HC, Murnane MM.
PMID: 19829654
Opt Lett. 1994 Mar 15;19(6):399-401. doi: 10.1364/ol.19.000399.

We demonstrate the use of intracavity frequency doubling in a self-mode-locked Ti:sapphire laser to generate pulses as short as 14 fs. We use a 100-microm-thick lithium triborate (LiB(3)O(5)) crystal in a standard Ti:sapphire laser cavity for the frequency doubling....

Prepulse suppression for high-energy ultrashort pulses using self-induced plasma shuttering from a fluid target.

Optics letters

Backus S, Kapteyn HC, Murnane MM, Gold DM, Nathel H, White W.
PMID: 19802062
Opt Lett. 1993 Jan 15;18(2):134-6. doi: 10.1364/ol.18.000134.

The technique of self-induced plasma shuttering can be used to suppress prepulse energy from an ultrashort pulse. If a femtosecond pulse is incident upon a transparent target, the leading edge passes through while the peak reflects owing to ionization...

An Integrative Genomics Approach for Associating GWAS Information with Triple-Negative Breast Cancer.

Cancer informatics

Hicks C, Kumar R, Pannuti A, Backus K, Brown A, Monico J, Miele L.
PMID: 23423317
Cancer Inform. 2013;12:1-20. doi: 10.4137/CIN.S10413. Epub 2013 Jan 29.

Genome-wide association studies (GWAS) have identified genetic variants associated with an increased risk of developing breast cancer. However, the association of genetic variants and their associated genes with the most aggressive subset of breast cancer, the triple-negative breast cancer...

Naphthalenebisimides as photofunctional surfactants for SWCNTs - towards water-soluble electron donor-acceptor hybrids.

Chemical science

Dirian K, Backes S, Backes C, Strauss V, Rodler F, Hauke F, Hirsch A, Guldi DM.
PMID: 28757977
Chem Sci. 2015 Dec 01;6(12):6886-6895. doi: 10.1039/c5sc02944a. Epub 2015 Sep 22.

A water soluble naphthalenebisimide derivative (NBI) was synthesized and probed to individualize, suspend, and stabilize single wall carbon nanotubes (SWCNTs). Besides a comprehensive photophysical and electrochemical characterization of NBI, stable suspensions of SWCNTs were realized in buffered D

Molecular Origin of Electrical Conductivity in Gold-Polythiophene Hybrid Particle Films.

The journal of physical chemistry letters

Backes IK, González-Garcı A L, Holtsch A, Müller F, Jacobs K, Kraus T.
PMID: 33290078
J Phys Chem Lett. 2020 Dec 17;11(24):10538-10547. doi: 10.1021/acs.jpclett.0c02831. Epub 2020 Dec 08.

Hybrid electronic materials combine inorganic metals and semiconductors with π-conjugated polymers. The orientation of the polymer molecules in relation to the inorganic components is crucial for electrical material properties and device performance, but little is known of the configuration...

The chaperone-binding activity of the mitochondrial surface receptor Tom70 protects the cytosol against mitoprotein-induced stress.

Cell reports

Backes S, Bykov YS, Flohr T, Räschle M, Zhou J, Lenhard S, Krämer L, Mühlhaus T, Bibi C, Jann C, Smith JD, Steinmetz LM, Rapaport D, Storchová Z, Schuldiner M, Boos F, Herrmann JM.
PMID: 33826901
Cell Rep. 2021 Apr 06;35(1):108936. doi: 10.1016/j.celrep.2021.108936.

Most mitochondrial proteins are synthesized as precursors in the cytosol and post-translationally transported into mitochondria. The mitochondrial surface protein Tom70 acts at the interface of the cytosol and mitochondria. In vitro import experiments identified Tom70 as targeting receptor, particularly...

Why flipping the classroom is not enough: Digital curriculum making after the pandemic.

Prospects

Backes S, Baumann I, Harion D, Sattler S, Lenz T.
PMID: 33941988
Prospects (Paris). 2021 Apr 28;1-15. doi: 10.1007/s11125-021-09555-9. Epub 2021 Apr 28.

To slow down the proliferation of Covid-19, governments virtually shut down public life, temporarily closed schools, and forced teaching to be done exclusively on a remote basis. These measures offer an opportunity to reexamine conventional teaching and learning arrangements,...

Phase-matched generation of coherent soft X-rays .

Science (New York, N.Y.)

Rundquist A, Durfee CG, Chang Z, Herne C, Backus S, Murnane MM, Kapteyn HC.
PMID: 9603725
Science. 1998 May 29;280(5368):1412-5. doi: 10.1126/science.280.5368.1412.

Phase-matched harmonic conversion of visible laser light into soft x-rays was demonstrated. The recently developed technique of guided-wave frequency conversion was used to upshift light from 800 nanometers to the range from 17 to 32 nanometers. This process increased...

Coherent soft x-ray generation in the water window with quasi-phase matching.

Science (New York, N.Y.)

Gibson EA, Paul A, Wagner N, Tobey R, Gaudiosi D, Backus S, Christov IP, Aquila A, Gullikson EM, Attwood DT, Murnane MM, Kapteyn HC.
PMID: 14526077
Science. 2003 Oct 03;302(5642):95-8. doi: 10.1126/science.1088654.

We demonstrate enhanced generation of coherent light in the "water window" region of the soft x-ray spectrum at 4.4 nanometers, using quasi-phase-matched frequency conversion of ultrafast laser pulses. By periodically modulating the diameter of a gas-filled hollow waveguide, the...

Population genealogy resource shows evidence of familial clustering for Alzheimer disease.

Neurology. Genetics

Cannon-Albright LA, Dintelman S, Maness T, Cerny J, Thomas A, Backus S, Farnham JM, Teerlink CC, Contreras J, Kauwe JSK, Meyer LJ.
PMID: 30109265
Neurol Genet. 2018 Aug 01;4(4):e249. doi: 10.1212/NXG.0000000000000249. eCollection 2018 Aug.

OBJECTIVE: To show the potential of a resource consisting of a genealogy of the US record linked to National Veterans Health Administration (VHA) patient data for investigation of the genetic contribution to health-related phenotypes, we present an analysis of...

Showing 1 to 12 of 60 entries