Results 61 to 70 of about 594,359 (210)

Monolithic Double Resonator for Quartz Enhanced Photoacoustic Spectroscopy

Applied Sciences, 2021
A new approach for Quartz Enhanced Photoacoustic Spectroscopy is presented, based on an acoustic excitation from the outside of the prongs of a quartz tuning fork, to increase the sensitivity of the sensor.
Roman Rousseau, Diba Ayache, Nicolas Maurin, Wioletta Trzpil, Michael Bahriz, Aurore Vicet   +5 more
doaj   +1 more source

Puerarin‑Loaded pH‑Responsive ZIF‑90 Nanoparticles Ameliorate Osteoporosis via Enhancing H3K18 Lactylation and Suppressing Aberrant Osteoclast Activation

Advanced Science, EarlyView.
Schematic illustration of the mechanism by which ZIF‐90@PU alleviates osteoporosis via H3K18la‐mediated NFATc1 pathway suppression. ABSTRACT Osteoporosis is characterized by dysregulated osteoclast activity, leading to excessive bone resorption and structural damage.
Jiajia Lu, Yue Xi, Sheng Wang, Ye Chen, Jiajie Yang, Xiaojian Shi   +5 more
wiley   +1 more source

Site Density Governs Switching Reactivity Regimes During Aerobic C─H Oxidation in Mn Single‐Atom Photocatalysts

Angewandte Chemie, EarlyView.
Increasing the density of isolated manganese (Mn) atoms in carbon nitride (CNx) photocatalysts does not continuously improve performance. Instead, beyond a critical loading, the polymer support reorganizes, altering charge‐carrier dynamics and oxygen activation while preserving atomic dispersion.
Viktoria Velichko, Agustín de Arriba, Areti Moutsiou, Elisabetta Inico, Andrea Olivati, Berta Pérez‐Román, Jesús López‐Sánchez, Ik Seon Kwon, Andrea Tonelli, Abhijit Roy, Valentina De Renzi, Raul Arenal, Annamaria Petrozza, Carlo Cavallotti, Gianvito Vilé   +14 more
wiley   +2 more sources

Quartz tuning-fork type AFM probe operated in Anti-phase Vibration Mode [PDF]

, 2006
This paper presents that quartz tuning fork shows excellent properties as Atomic Force Microscopy (AFM) probe. We used Focused Ion Beam (FIB) system to monolithically form a sharp tip at the side end of one beam.
Sato, K., Ono, A., Iriye, Y., K. Asaumi, Hida, H., K. Fukuzawa, Shikida, M., M. Shikida, Asaumi, K., Fukuzawa, K., K. Sato, H. Hida, Y. Iriye, A. Ono, 22354, 22355, 22356, 22357, 22358, 22359, 22360, 22361   +21 more
core   +1 more source

Osmium Nanoparticle Anchoring on CoFe Layered Double Hydroxides Enables High‐Valent Species Stabilization and Efficient Seawater Oxygen Evolution

Advanced Science, EarlyView.
Osmium nanoparticles anchored on CoFe layered double hydroxide (Os/CoFe LDH) stabilize high‐valent Co/Fe species and modulate the interfacial water configuration via surface engineering. This work presents a facile surface engineering strategy for constructing efficient and durable OER electrocatalysts for alkaline seawater, and expands the ...
Xindong She, Guosheng Zhou, Kanghua Miao, Junjie Gong, Mingzhe Jiang, Xueting Zhu, Zhenzhen Wang, Shijie Shen, Wenwu Zhong   +8 more
wiley   +1 more source

Integrated carbon nanotube fibre–quartz tuning fork biosensor; pp. 48–51 [PDF]

Proceedings of the Estonian Academy of Sciences, 2012
We report on a novel label-free biosensor for in situ measurements in liquid. It is comprised of a porous carbon nanotube (CNT) fibre attached to one prong of a quartz tuning fork (QTF) resonator.
Sergei Vlassov, Ott Scheler, Margo Plaado, Rünno Lõhmus, Ants Kurg, Kristjan Saal, Ilmar Kink   +6 more
doaj   +1 more source

Q‐LEAP: Millisecond Hyperdimensional Optimization for Full‐Spectrum Optical Metamaterials

Advanced Science, EarlyView.
Q‐LEAP integrates physics‐informed residual machine learning with factorization‐machine‐encoded quantum annealing to design full‐spectrum optical metamaterials. It explores a 2108 design space and, in a single 2.56 ms annealing step, reaches 85.83% of the theoretical FoM limit, enabling selective 5‐8 µm emission with 3–5 and 8–14 µm suppression and ∼40×
Zikang Guo, Yunwen Wu, Yuhui Guo, Shenghong Ju   +3 more
wiley   +1 more source

Femtosecond laser processing of quartz wafers for precision cutting of tuning forks

JPhys Photonics
In this work, femtosecond laser cutting of quartz wafers was demonstrated as an environmentally friendly alternative to the standard etching methods for production of sensitive sensor devices.
Raffaele De Palo, Jaka Mur, Matevž Marš, Felice Alberto Sfregola, Pietro Patimisco, Vincenzo Spagnolo, Antonio Ancona, Rok Petkovšek, Annalisa Volpe   +8 more
doaj   +1 more source

Morphology‐Defined Entropy Streams for Random‐Bit Generation and Probabilistic Sampling in Memristor Arrays

Advanced Science, EarlyView.
Au nanoisland morphology defines stochastic high‐resistance‐state transport in Ag/TiO2 memristor arrays, transforming nanoscale structural disorder into a tunable physical entropy resource. Morphology‐controlled field hotspots and reset‐modulated nanogaps generate statistically validated random‐bit streams, which further serve as device‐derived ...
Hyunjun Kim, Da Ye Kim, Noah Jang, Yongho Lee, Byunghun Song, June Soo Kim   +5 more
wiley   +1 more source

Measurements of vortex line density generated by a quartz tuning fork in superfluid $$^{4}$$ 4 He [PDF]

, 2016
We present proof-of-concept measurements of the vortex line density generated by a quartz tuning fork resonator probed by the attenuation of second sound in superfluid 4He at 1.6 K.
Schmoranzer, D., Skrbek, L., Woods, A. J., Kolosov, O., Tsepelin, V., Jackson, M. J.   +5 more
core   +3 more sources