Results 91 to 100 of about 26,661 (230)

Monitoring phase transitions in β-W thin films using ellipsometry

Materials Research Express
Understanding and monitoring phase transformations in tungsten thin films is crucial for advancing applications in spintronics, including MRAM technology.
Raid Bader, Argyrios Malapanis, Haralabos Efstathiadis   +2 more
doaj   +1 more source

Direct Observationof DegenerateTwo-Photon Absorption and Its Saturation in WS2 and MoS2 Monolayer and Few-Layer Films

, 2015
The optical nonlinearity of WS2, MoS2 monolayer and few-layer films was investigated using the Z-scan technique with femtosecond pulses from the visible to the near infrared.
Berner, Nina C., Chen, Zhanghai, Dong, Ningning, Duesberg, Georg S., Li, Yuanxin, McEvoy, Niall, O'Brien, Maria, Wang, Jun, Winters, Sinéad, Yim, Chanyoung, Zhang, Long, Zhang, Saifeng, Zhang, Xiaoyan   +12 more
core   +1 more source

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

Advanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta, Yinghao Zhao, Jose Mendoza‐Carreño, José M. Caicedo, José Santiso, C. David Wright, M. Isabel Alonso, Jiafang Li, Agustin Mihi   +8 more
wiley   +1 more source

Photolyzable Polymer Brushes: Subtractive 3D Structuring of Surfaces Using Water and Light

Angewandte Chemie, EarlyView.
Facile structuring of polymer brushes is achieved by flipping the process from controlled growth to controlled brush photolysis. Using surface‐initiated radical ring‐opening polymerization of cyclic monomers with photocleavable cyclobutane rings, photodegradable targets are embedded into the polymer chains. The enabled continuous subtractive patterning
Henrik Kalmer, Federica Sbordone, Phuong T. Do, Kai Mundsinger, Hazal Kayas, Robert T. Jones, Jayanti Mendhi, Tim R. Dargaville, Damien G. Harkin, Lukas Michalek, Andrew Nelson, Hendrik Frisch   +11 more
wiley   +2 more sources

Ultrathin Quasi‐2D Perovskite‐Organic Segregated‐Structure Coupling for High‐Performance Narrowband Photomultiplication Detectors

Advanced Science, EarlyView.
Quasi‐2D perovskite‐organic segregated‐structure coupling enables low‐power narrowband photomultiplication photodetectors with 110 nm perovskite layer. The optimal device achieves 1200% EQE and 1.82 × 1011 Jones D* at 3 V, offering a new strategy for miniaturized high‐selectivity optoelectronic sensing.
Hongfei Qu, Peng He, Xingchao Zhao, Yongchao Xie, Fulong Huang, Xiaoling Ma, Byung Hui Lee, Han Young Woo, Yumeng Shi, Zuliang Zhuo, Fujun Zhang, Xixiang Zhu   +11 more
wiley   +1 more source

Rapid, non-destructive evaluation of ultrathin WSe2 using spectroscopic ellipsometry

APL Materials, 2014
The utilization of tungsten diselenide (WSe2) in electronic and optoelectronic devices depends on the ability to understand and control the process-property relationship during synthesis.
Sarah M. Eichfeld, Chad M. Eichfeld, Yu-Chuan Lin, Lorraine Hossain, Joshua A. Robinson   +4 more
doaj   +1 more source

Ultrabroadband and Highly Sensitive Short‐Wave Infrared Molecular Fingerprinting via Acoustic MXene Plasmons

Advanced Science, EarlyView.
Acoustic plasmons in Ti3C2Tx MXene strongly compress infrared electromagnetic fields and enhance light–matter interactions at the nanoscale. This platform couples broadband plasmon excitations with molecular vibrations, enabling simultaneous sensing of high‐ and low‐frequency vibrational modes in ultrathin PMMA and graphene oxide films, and extending ...
Changhoon Park, Jisung Kwon, Nu‐Ri Park, Hyerim Kim, Hyeju Kim, Yury Gogotsi, Chong Min Koo, Myung‐Ki Kim   +7 more
wiley   +1 more source

Design of a Multiplex Sensing Platform: AFM as a Nanolithographic Tool

Proceedings
Coupling spectroscopic ellipsometry (SE), quartz crystal microbalance with dissipation (QCM-D), X-ray photoemission spectroscopy (XPS), and atomic force microscopy (AFM), we developed a multi-technique approach to characterize the surface immobilization ...
Silvia Maria Cristina Rotondi, Paolo Canepa, Maurizio Canepa, Ornella Cavalleri   +3 more
doaj   +1 more source

Modelling of Optical Damage in Nanorippled ZnO Produced by Ion Irradiation

Crystals, 2019
Here, we report on the production of nanoripples on the surface of ZnO bulk substrates by ion beam erosion with 20 keV Ar+ ions at an oblique incidence (60°).
Andrés Redondo-Cubero, Luis Vázquez, Denis Jalabert, Katharina Lorenz, Nebiha Ben Sedrine   +4 more
doaj   +1 more source

A Dual‐Channel Synergistic Ultrasensitive Biosensor for Tumor Liquid Biopsy

Advanced Science, EarlyView.
ABSTRACT Liquid biopsy technology, which detects circulating tumor DNA (ctDNA) in cerebrospinal fluid, plays a crucial role in the early diagnosis and precision treatment of gliomas. However, the intrinsically low abundance and rapid clearance of ctDNA pose substantial challenges for conventional analytical techniques, such as droplet digital PCR and ...
Yu Sun, Jing Zhang, Chenqing Liu, Jing Lou, Sihui Wang, Xiangtian Ji, Xiaofang Zhao, Shirui Xu, Jingyu Feng, Bin Liu, Chao Chang, Qinggang Ge, Jun Yang   +12 more
wiley   +1 more source