Results 61 to 70 of about 1,538,076 (299)

Resonantly enhanced second-harmonic generation using III-V semiconductor all-dielectric metasurfaces

, 2016
Nonlinear optical phenomena in nanostructured materials have been challenging our perceptions of nonlinear optical processes that have been explored since the invention of lasers. For example, the ability to control optical field confinement, enhancement,
Brener, Igal, Keeler, Gordon A., Liu, Sheng, Peake, Gregory M., Pertsch, Thomas, Reno, John, Saravi, Sina, Setzpfandt, Frank, Sinclair, Michael B., Staude, Isabelle, Yang, Yuanmu   +10 more
core   +2 more sources

Plasmon-enhanced electron-phonon coupling in Dirac surface states of the thin-film topological insulator Bi2Se3 [PDF]

, 2015
Raman measurements of a Fano-type surface phonon mode associated with Dirac surface states (SS) in Bi2Se3 topological insulator thin films allowed an unambiguous determination of the electron-phonon coupling strength in Dirac SS as a function of film ...
Babakiray, Sercan, Glinka, Yuri D., Lederman, David   +2 more
core   +3 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Extremely large extinction efficiency and field enhancement in terahertz resonant dipole nanoantennas [PDF]

, 2011
The distinctive ability of nanometallic structures to manipulate light at the nanoscale has recently promoted their use for a spectacular set of applications in a wide range of areas of research including artificial optical materials, nano-imaging ...
Al-Naib, Ibraheem A. I., Clerici, Matteo, Das, Gobind, De Angelis, Francesco, Di Fabrizio, Enzo, Falqui, Andrea, Liberale, Carlo, Marras, Sergio, Morandotti, Roberto, Ozaki, Tsuneyuki, Peccianti, Marco, Razzari, Luca, Shalaby, Mostafa, Toma, Andrea, Zaccaria, Remo Proietti   +14 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Probing of optical near-fields by electron rescattering on the 1 nm scale

, 2013
We present a new method of measuring optical near-fields within ~1 nm of a metal surface, based on rescattering of photoemitted electrons. With this method, we precisely measure the field enhancement factor for tungsten and gold nanotips as a function of
Förster, Michael, Hommelhoff, Peter, Krüger, Michael, Schenk, Markus, Thomas, Sebastian   +4 more
core   +1 more source

Vibrational modes in nanocrystalline iron under high pressure [PDF]

, 2004
The phonon density of states (DOS) of nanocrystalline 57Fe was measured using nuclear resonant inelastic x-ray scattering (NRIXS) at pressures up to 28 GPa in a diamond anvil cell.
Alp, E. Ercan, Fultz, Brent, Halevy, Itzhak, Mao, Ho-kwang, Papandrew, Alexander B., Sturhahn, Wolfgang, Toellner, Thomas S., Yue, Alan F.   +7 more
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Universal enhancement of superconductivity in two dimensional semiconductors at low doping by electron-electron interaction

, 2015
In two-dimensional multivalley semiconductors, at low doping, even a moderate electron-electron interaction enhances the response to any perturbation inducing a valley polarization.
Calandra, Matteo, Mauri, Francesco, Zoccante, Paolo   +2 more
core   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source