Results 81 to 90 of about 129,066 (229)

Generation and detection of squeezed phonons in lattice dynamics by ultrafast optical excitations

New Journal of Physics, 2017
We propose a fully quantum treatment for pump and probe experiments applied to the study of phonon excitations in solids. To describe the interaction between photons and phonons, a single effective hamiltonian is used that is able to model both the ...
Fabio Benatti, Martina Esposito, Daniele Fausti, Roberto Floreanini, Kelvin Titimbo, Klaus Zimmermann   +5 more
doaj   +1 more source

Identifying a forward scattering superconductor through pump-probe spectroscopy

, 2018
Electron-boson scattering that is peaked in the forward direction has been suggested as an essential ingredient for enhanced superconductivity observed in FeSe monolayers.
Johnston, S., Kemper, A. F., Kumar, Ankit   +2 more
core   +1 more source

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

Molecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns, Jaclyn S. Long, Sergio Lilla, Kelly Hodge, Marcus J. G. W. Ladds, Colin Nixon, Paula Fernández‐Palanca, Sara Zanivan, Pilar Acedo, Stephen P. Pereira, Kevin M. Ryan   +10 more
wiley   +1 more source

Modulation above Pump Beam Energy in Photoreflectance

International Journal of Photoenergy, 2017
Photoreflectance is used for the characterisation of semiconductor samples, usually by sweeping the monochromatized probe beam within the energy range comprised between the highest value set up by the pump beam and the lowest absorption threshold of the ...
D. Fuertes Marrón
doaj   +1 more source

Cubic optical nonlinearity of free electrons in bulk gold

, 1995
A fast (τresponse <90 fs) free-electron spin-flipping frequency-degenerate nonlinearity with a significant value of |χ(3)xxyy(ω,ω,ω,-ω) χ(3)xyyx(ω,ω,ω,-ω)| ~ 10-8 esu has been observed in bulk gold at 1260 nm by use of a new pump-probe polarization ...
Beuneu, Burns, Dumke, E. V. Slobodchikov, Eesley, Fann, H. Loh, Hache, Hache, Hübner, I. R. Shatwell, Ivanov, N. I. Zheludev, P. J. Bennett, Pan, Popov, S. V. Popov, Schoenlein, Shen, Svirko, V. E. Gusev, V. F. Kamalov, Wang, Yu. P. Svirko, Zheludev   +24 more
core   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Formation and relaxation of RbHe exciplexes on He nanodroplets studied by femtosecond pump and picosecond probe spectroscopy

, 2012
Vibrationally resolved photoionization spectra of RbHe exciplexes forming on He nanodroplets are recorded using femtosecond pump-probe spectroscopy with amplitude-shaped probe pulses.
Giese, C., Gruener, B., Mudrich, M., Mullins, T., Stienkemeier, F., Weidemueller, M.   +5 more
core   +1 more source

Targeted modulation of IGFL2‐AS1 reveals its translational potential in cervical adenocarcinoma

Molecular Oncology, EarlyView.
Cervical adenocarcinoma patients face worse outcomes than squamous cell carcinoma counterparts despite similar treatment. The identification of IGFL2‐AS1's differential expression provides a molecular basis for distinguishing these histotypes, paving the way for personalized therapies and improved survival in vulnerable populations globally.
Ricardo Cesar Cintra, Lucca Paolo Hsu Helmich, Daniel Rodrigues de Bastos, Laura Sichero, Patrícia Savio de Araujo‐Souza, Fabio Passetti, Luisa Lina Villa   +6 more
wiley   +1 more source

The gain enhancement effect of surface plasmon polaritons on terahertz stimulated emission in optically pumped monolayer graphene

New Journal of Physics, 2013
Nonlinear carrier relaxation/recombination dynamics and the resultant stimulated terahertz (THz) photon emission with excitation of surface plasmon polaritons (SPPs) in photoexcited monolayer graphene has been experimentally studied using an optical pump/
Takayuki Watanabe, Tetsuya Fukushima, Yuhei Yabe, Stephane Albon Boubanga Tombet, Akira Satou, Alexander A Dubinov, Vladimir Ya Aleshkin, Vladimir Mitin, Victor Ryzhii, Taiichi Otsuji   +9 more
doaj   +1 more source

Unambiguous determination of spin dephasing times in ZnO

, 2013
Time-resolved magneto-optics is a well-established optical pump probe technique to generate and to probe spin coherence in semiconductors. By this method, spin dephasing times T_2^* can easily be determined if their values are comparable to the available
Althammer, Matthias, Beschoten, Bernd, Brandt, Martin S., de Winter, Robin, Goennenwein, Sebastian T. B., Gross, Rudolf, Kuhlen, Sebastian, Ledesch, Ralph, Opel, Matthias, Wassner, Thomas A.   +9 more
core   +1 more source