Results 41 to 50 of about 29,704 (268)

Optical microbubble resonator [PDF]

Optics Letters, 2010
We develop a method for fabricating very small silica microbubbles having a micrometer-order wall thickness and demonstrate the first optical microbubble resonator. Our method is based on blowing a microbubble using stable radiative CO(2) laser heating rather than unstable convective heating in a flame or furnace.
Sumetsky, M., Dulashko, Y., Windeler, R.S.   +2 more
openaire   +2 more sources

Study on microbubble of cellulose acetate microfilm of the Republic of China (AD 1912–1949) collected in the Second Historical Archives of China

Heritage Science, 2020
The white spots known as microbubbles that are formed in cellulose acetate film, significantly affects the texture of the image. However, the formation of microbubbles and their corresponding microstructure are poorly understood. In this paper, cellulose
Zhihui Jia, Yuhu Li, Yunpeng Qi, Yajun Zhou, Daodao Hu, Xiaolian Chao, Huiping Xing, Jing Li   +7 more
doaj   +1 more source

A Fundamental Study on the Friction Reduction Characteristics of Microbubbles in Journal Bearings: Mechanics and Visualization

Lubricants
Improving motor efficiency by reducing frictional losses in the journal bearings used in many rotating machines is critical for advancing sustainable mechanical systems, especially automobiles.
Yuki Yoshimura, Shodai Sakabe, Yuki Kawamoto, Akihiko Azetsu, Masayuki Ochiai   +4 more
doaj   +1 more source

Polymer Mechanochemistry in Microbubbles

Advanced Materials, 2023
AbstractPolymer mechanochemistry is a promising technology to convert mechanical energy into chemical functionality by breaking covalent and supramolecular bonds site‐selectively. Yet, the mechanochemical reaction rates of covalent bonds in typically used ultrasonication setups lead to reasonable conversions only after comparably long sonication times.
Mingjun Xuan, Jilin Fan, Vu Ngoc Khiêm, Miancheng Zou, Kai‐Oliver Brenske, Ahmed Mourran, Rostislav Vinokur, Lifei Zheng, Mikhail Itskov, Robert Göstl, Andreas Herrmann   +10 more
openaire   +3 more sources

Study on Liquid Turbulence Modulation by Microbubbles in Different Turbulence Layers

Advances in Mechanical Engineering, 2014
Bubbly flows exist extensively in industrial processes. To enhance efficiencies of industrial processes, it is very necessary and important to understand detailedly mechanisms of liquid turbulence modulation by bubbles.
Mingjun Pang, Jinjia Wei, Bo Yu
doaj   +1 more source

First-cycle oscillation excursions of Pickering-stabilised microbubbles subjected to a high-amplitude ultrasound pulse

Current Directions in Biomedical Engineering, 2022
Pickering stabilisation is a manufacturing process involving the adsorption of colloidal particles at gas-liquid interfaces. It is used to create the shells of stable, long-lived ultrasound contrast agent microbubbles. The purpose of the present study is
Anderton Nicole, Carlson Craig S., Matsumoto Ryunosuke, Shimizu Ri-ichiro, Poortinga Albert T., Kudo Nobuki, Postema Michiel   +6 more
doaj   +1 more source

Air-Filled Microbubbles Based on Albumin Functionalized with Gold Nanocages and Zinc Phthalocyanine for Multimodal Imaging

Micromachines, 2021
Microbubbles are intravascular contrast agents clinically used in diagnostic sonography, echocardiography, and radiology imaging applications. However, up to date, the idea of creating microbubbles with multiple functionalities (e.g., multimodal imaging,
Elizaveta A. Maksimova, Roman A. Barmin, Polina G. Rudakovskaya, Olga A. Sindeeva, Ekaterina S. Prikhozhdenko, Alexey M. Yashchenok, Boris N. Khlebtsov, Alexander A. Solovev, Gaoshan Huang, Yongfeng Mei, Krishna Kanti Dey, Dmitry A. Gorin   +11 more
doaj   +1 more source

Contrast-enhanced ultrasound combined targeted microbubbles for diagnosis of highly aggressive papillary thyroid carcinoma

Frontiers in Endocrinology, 2023
BackgroundAccurate diagnosis of highly aggressive papillary thyroid cancer (PTC) may greatly help avoid overdiagnosis and overtreatment of PTC. However, there is still a lack of a convenient and accurate method.
Jiaojiao Ma, Jiaojiao Ma, Yuan Wang, Xuehua Xi, Jiajia Tang, Jiajia Tang, Linping Wang, Linping Wang, Liangkai Wang, Liangkai Wang, Di Wang, Xiaolong Liang, Bo Zhang, Bo Zhang, Bo Zhang   +14 more
doaj   +1 more source

Blood–Brain Barrier Regulation: Evolving From Classic Strategies to Electrochemical Ion and Reactive Oxygen Species Control

Advanced Healthcare Materials, EarlyView.
Conventional therapies suffer from poor blood–brain barrier (BBB) penetration and disordered ion/reactive oxygen species (ROS) homeostasis, hindering precise neurological treatment. Electrochemical strategies achieve accurate spatiotemporal regulation of neural homeostasis.
Xiaokang Hu, Caiyu Liu, Meijun Pang, Zhiyuan Shi, Dong Ming, Xiuyun Liu   +5 more
wiley   +1 more source

Sensitivity improvement of subharmonic-based pressure measurement using phospholipid-coated monodisperse microbubbles

Ultrasonics Sonochemistry
The use of the subharmonic signal from microbubbles exposed to ultrasound is a promising safe and cost-effective approach for the non-invasive measurement of blood pressure.
Pengcheng Wang, Chunjie Tan, Xiang Ji, Jingfeng Bai, Alfred C.H. Yu, Peng Qin   +5 more
doaj   +1 more source