Results 61 to 70 of about 4,787 (279)

Characteristics of BeiDou-3 Experimental Satellite Clocks

Remote Sensing, 2018
The characteristics of the improved Atomic Frequency Standard (AFS) operated on the latest BeiDou-3 experimental satellites are analyzed from day-of-year (DOY) 254 to 281, of the year 2017, considering the following three aspects: stability, periodicity,
Yifei Lv, Tao Geng, Qile Zhao, Jingnan Liu   +3 more
doaj   +1 more source

Unraveling Quantitative Sensing Mechanism and Predictive Molecular Metrics for High‐Performance OFET Amine Sensors

Advanced Functional Materials, EarlyView.
This study introduces a novel chloro boron subphthalocyanine/polymer blend OFET sensor achieving 0.005 ppb limit of detection for ammonia at room temperature and high selectivity against similar amines. An original theoretical framework is proposed to describe the sensing mechanism, relating analyte molecular volume and Lewis basicity to sensor ...
Kavinraaj Ella Elangovan, Matthew P. Confer, Rui Zhang, Siqing Wang, Jeffrey S. Moore, Rohit Bhargava, Ying Diao   +6 more
wiley   +1 more source

Metronidazole‐Loaded Cyclodextrin Nanogels for Antibacterial Therapy and Microbiota Regulation in Periodontitis

Advanced Healthcare Materials, EarlyView.
A methacrylamide β‐cyclodextrin‐based nanogel (MACD nGel) is developed to load the antimicrobial drug Metronidazole (MNZ) for topical delivery for the treatment of periodontitis. It is demonstrated that cyclodextrin nanogel (nGel) loaded with metronidazole provides an efficient drug delivery route but also has potential clinical applications and offers
Yanjing Ji, Ruichen Zhang, Dongyi Xu, Patrick C. A. van der Wel, Alessia Lasorsa, Guotai Li, Fangze Guo, Qihui Zhou, Patrick van Rijn   +8 more
wiley   +1 more source

A method for measuring the direction of the geomagnetic field to correct of the onboard rubidium atomic clock frequency using an Mz-magnetometer

St. Petersburg Polytechnical University Journal: Physics and Mathematics
The article presents a method developed by the authors for measuring the direction of a magnetic field using an MZ-type quantum magnetometer, the readings of which are used to correct the frequency of an onboard small-sized rubidium atomic clock.
Ermak Sergey, Semenov Vladimir, Sergeeva Maria   +2 more
doaj   +1 more source

Delivery of Multifunctional Microspheres via Intravesical Instillation for Bladder Carcinoma: Therapeutic Potential and Mechanistic Insights

Advanced Healthcare Materials, EarlyView.
PCTM microspheres were successfully synthesized using microfluidic and click chemistry techniques.In Vivo and in vitro experiments have shown that PCTM microspheres have obvious targeting, adhesion, membrane penetration and anti‐tumor properties for bladder tumors.The antitumor mechanism of PCTM microspheres is to indirectly induce S‐stage blockage of ...
Zhaoxiang Lu, Wentie Yang, Youzhi Hong, Yusen Qiao, Chaozhao Liang   +4 more
wiley   +1 more source

How to estimate the differential acceleration in a two-species atom interferometer to test the equivalence principle

, 2009
We propose a scheme for testing the weak equivalence principle (Universality of Free Fall) using an atom-interferometric measurement of the local differential acceleration between two atomic species with a large mass ratio as test masses.
Bouyer, Philippe, Cheinet, Patrick, Geiger, Rémi, Landragin, Arnaud, Nyman, Robert A., Varoquaux, Gael   +5 more
core   +4 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Miniature Optical Atomic Clock: Stabilization of a Kerr Comb Oscillator [PDF]

, 2013
Mechanical clocks consist of a pendulum and a clockwork that translates the pendulum period to displayed time. The most advanced clocks utilize optical transitions in atoms in place of the pendulum and an optical frequency comb generated by a femtosecond
Byrd, J., Eliyahu, D., Ilchenko, V. S., Liang, W., Maleki, L., Matsko, A. B., Savchenkov, A. A., Seidel, D.   +7 more
core  

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source