Results 1 to 10 of about 385,893 (118)

Optical Contrast and Raman Spectroscopy Techniques Applied to Few-Layer 2D Hexagonal Boron Nitride

Nanomaterials, 2019
The successful integration of few-layer thick hexagonal boron nitride (hBN) into devices based on two-dimensional materials requires fast and non-destructive techniques to quantify their thickness.
Marie Krečmarová, Daniel Andres-Penares, Ladislav Fekete, Petr Ashcheulov, Alejandro Molina-Sánchez, Rodolfo Canet-Albiach, Ivan Gregora, Vincent Mortet, Juan P. Martínez-Pastor, Juan F. Sánchez-Royo   +9 more
doaj   +3 more sources

Synthesis and Characterization of Carboxymethylcellulose-Functionalized Magnetite Nanoparticles as Contrast Agents for THz Spectroscopy with Applications in Oncology

Crystals
This paper describes a process to obtain magnetite functionalized with carboxymethylcellulose via coprecipitation by means of a preliminary stabilization of magnetite in citric acid. The magnetite assemblies successfully passed in vitro and in vivo tests
Oliver Daniel Schreiner, Petrisor Samoila, Thomas Gabriel Schreiner, Diana Socotar, Romeo Cristian Ciobanu   +4 more
doaj   +3 more sources

Detecting Exoplanets Closer to Stars with Moderate Spectral Resolution Integral-field Spectroscopy

The Astronomical Journal, 2023
While radial velocity surveys have demonstrated that the population of gas giants peaks around 3 au, the most recent high-contrast imaging surveys have only been sensitive to planets beyond ∼10 au.
Shubh Agrawal, Jean-Baptiste Ruffio, Quinn M. Konopacky, Bruce Macintosh, Dimitri Mawet, Eric L. Nielsen, Kielan K. W. Hoch, Michael C. Liu, Travis S. Barman, William Thompson, Alexandra Z. Greenbaum, Christian Marois, Jenny Patience   +12 more
doaj   +1 more source

Novel high contrast grating hollow core waveguides for enhanced gas spectroscopy [PDF]

EPJ Web of Conferences
The article presents an innovative approach to confining waves in planar high contrast grating hollow core waveguides, design achieves a surface that reflects waves effectively while maintaining a structure that allows for high transmission.
Thottoli Ajmal, Devarapu Ganga Chinna Rao, D’Orazio Antonella, Magno Giovanni, O’Faolain Liam   +4 more
doaj   +1 more source

Rapid Determination of Meteorolite Composition Based on X-ray Phase Contrast Imaging-Assisted Raman Spectroscopy

Chemosensors, 2023
Returning extraterrestrial samples to Earth has become essential for future deep space exploration. Achieving a comprehensive evaluation of the physical and chemical properties of samples with minimal damage is key to analyzing extraterrestrial samples ...
Hongpeng Wang, Peipei Fang, Yian Wang, Yingjian Xin, Shengjun Xiong, Sicong Liu, Yanling Xue, Liang Zhang, Xiong Wan   +8 more
doaj   +1 more source

Detecting Biosignatures in Nearby Rocky Exoplanets Using High-contrast Imaging and Medium-resolution Spectroscopy with the Extremely Large Telescope

The Astronomical Journal, 2023
In the upcoming decades, one of the primary objectives in exoplanet science is to search for habitable planets and signs of extraterrestrial life in the Universe.
Huihao Zhang, Ji Wang, Michael K. Plummer   +2 more
doaj   +1 more source

The Green Synthesis of Reduced Graphene Oxide Using Ellagic Acid: Improving the Contrast-Enhancing Effect of Microbubbles in Ultrasound

Molecules, 2023
There is an urgent need to realize precise clinical ultrasound with ultrasound contrast agents that provide high echo intensity and mechanical index tolerance.
Qiwei Cheng, Yuzhou Wang, Qi Zhou, Shaobo Duan, Beibei Zhang, Yaqiong Li, Lianzhong Zhang   +6 more
doaj   +1 more source

Magnetic Resonance Spectroscopy: Role in clinical decision making and accurate diagnosis of the brain lesions

International Journal of Endorsing Health Science Research, 2021
Background: Magnetic Resonance Spectroscopy (MRS) combined Magnetic Resonance Spectroscopic Imaging (MRSI) can diagnose brain lesions and help manage several diseases.
Aurangzeb Kalhoro, Abdul Basit Sattar, Abdul Sattar M Hashim, Sanam B rajper   +3 more
doaj   +1 more source

Exciton spectroscopy and unidirectional transport in MoSe2-WSe2 lateral heterostructures encapsulated in hexagonal boron nitride

npj 2D Materials and Applications, 2022
Chemical vapor deposition (CVD) allows lateral edge epitaxy of transition metal dichalcogenide heterostructures. Critical for carrier and exciton transport is the material quality and the nature of the lateral heterojunction.
Dorian Beret, Ioannis Paradisanos, Hassan Lamsaadi, Ziyang Gan, Emad Najafidehaghani, Antony George, Tibor Lehnert, Johannes Biskupek, Ute Kaiser, Shivangi Shree, Ana Estrada-Real, Delphine Lagarde, Xavier Marie, Pierre Renucci, Kenji Watanabe, Takashi Taniguchi, Sébastien Weber, Vincent Paillard, Laurent Lombez, Jean-Marie Poumirol, Andrey Turchanin, Bernhard Urbaszek   +21 more
doaj   +1 more source

Generation of highly mutually coherent hard-x-ray pulse pairs with an amplitude-splitting delay line

Physical Review Research, 2021
Beam splitters and delay lines are among the key building blocks of modern-day optical laser technology. Progress in x-ray free electron laser source development and applications over the past decade is calling for their counterpart operating at the ...
Haoyuan Li, Yanwen Sun, Joan Vila-Comamala, Takahiro Sato, Sanghoon Song, Peihao Sun, Matthew H. Seaberg, Nan Wang, J. B. Hastings, Mike Dunne, Paul Fuoss, Christian David, Mark Sutton, Diling Zhu   +13 more
doaj   +1 more source