Article
Chemistry, Multidisciplinary
Qiang Gao, Zhou Yang, Ruitong Zhu, Jinping Wang, Pengzhao Xu, Jiayu Liu, Xiaowen Chen, Zuyao Yan, Yixin Peng, Yanping Wang, Hairong Zheng, Feiyan Cai, Wei Wang
Summary: The researchers have discovered that ultrasound of around 100 kHz can spin spherical micromotors in specific directions and at varying speeds, as well as making them move in circular trajectories. This spinning is believed to be caused by circular microstreaming flows that occur when a solid microsphere vibrates in ultrasound. These flows can also assist in releasing cargos from micromotors. This finding shows that ultrasound can be used to steer microrobots in complex environments and manipulate microorganisms and cells.
Article
Acoustics
Beomseok Cha, Song Ha Lee, Syed Atif Iqrar, Hee-Gyeong Yi, Jangho Kim, Jinsoo Park
Summary: In this study, a vertical-type ultrasonic SAW-based microfluidic mixer was proposed for rapid flow mixing with improved efficiency and controllability. Computational fluid dynamics simulations and experimental investigations were conducted to elucidate the acousto-hydrodynamic phenomenon of the vertical-type SAW-induced ASF. The SAW-induced vortices acted as a hydrodynamic barrier for controlled flow mixing, and proof-of-concept application demonstrated rapid red blood cell lysis with high efficiency based on the physical interactions with the SAW-induced acoustic vortical flows.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Physical
Michael Huelsmann, Christoph Beckmann, Steffi Baxter
Summary: The study investigated the impact of using a solution containing hydroxyapatite nanoparticles and sonic or ultrasonic agitation on root canal cleanliness. Results showed that sonic and ultrasonic agitation with sodium hypochlorite effectively cleaned debris from the root canal, and using sonic agitation with hydroxyapatite nanoparticles had a similar cleaning effect. However, ultrasonically activated nanoparticles performed poorly in comparison.
Review
Medicine, General & Internal
Vijetha Badami, Sneha Akarapu, Hemabhanu Kethineni, Satya Priya Mittapalli, Kasi Reddy Bala, Syeda Farha Fatima
Summary: This study conducted a systematic review and critical analysis to compare the efficacy of laser-activated irrigation (LAI) and ultrasonic-activated irrigation (UAI) in mature permanent teeth. A comprehensive literature search was performed and a total of 23 articles were included in this review. The majority of the articles reported that LAI was superior to UAI in terms of antimicrobial efficacy, smear layer, and dentin debris removal from the root canal system.
CUREUS JOURNAL OF MEDICAL SCIENCE
(2023)
Article
Acoustics
Takuya Yamamoto, Kazuki Kubo, Sergey Komarov
Summary: The study measured the velocity of acoustic streaming in water and molten aluminum, conducting various types of experiments. Based on the measurement results, the Strouhal number for acoustic streaming was determined and the velocity was measured. The velocity of acoustic streaming was found to be independent of amplitude of sonotrode tip oscillation in both water and aluminum melt.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Acoustics
Genichiro Fujii, Yuta Kurashina, Yusuke Terao, Tetsushi Azuma, Akira Morikawa, Kazuhide Kodeki, Osamu Takahara, Kenjiro Takemura
Summary: Suspension culture is crucial for biopharmaceutical development and regenerative medicine. Traditional static suspension culture in a flask can lead to uneven distribution of oxygen and nutrients, but using ultrasound-induced acoustic streaming can improve cell proliferation and reduce culture time for large-scale suspension culture. Results demonstrate the effectiveness of this method in accelerating the transition to large-scale culture.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Polymer Science
Wangqing Wu, Yang Zou, Guomeng Wei, Bingyan Jiang
Summary: This study analyzed the velocity field, force, and trajectory of particles in an ultrasonic plasticization chamber using finite element simulation. The results showed that ultrasonic vibrations can induce melt vortices and provide shear stirring performance similar to traditional extrusion/injection molding. The fluorescence intensity was found to be correlated with process parameters, with particles more evenly distributed at higher levels.
Article
Chemistry, Analytical
Junjun Lei, Gaokun Zheng, Zhen Yao, Zhigang Huang
Summary: In this study, the authors analyze the outer acoustic streaming flows generated over a fluid-solid interface using theoretical and numerical methods. They explore the differences between symmetric and asymmetric acoustic resonances and find that in symmetric resonances, the limiting velocities always drive fluids from the acoustic pressure node towards adjacent antinodes. However, in asymmetric resonances, the outer acoustic streaming is spatially separated from the acoustic radiation force and is independent of the shift in acoustic pressure. These findings have implications for acoustics streaming flow control and particle manipulation in microfluidics applications.
Article
Dentistry, Oral Surgery & Medicine
Ruiqi Yang, Yuqing Han, Zhaohui Liu, Zhezhen Xu, Hongyan Liu, Xi Wei
Summary: This study aimed to evaluate the efficacy of laser-activated and ultrasonic-activated techniques in vitro for the removal of tricalcium silicate-based sealer iRoot SP and gutta-percha after standard canal retreatment procedures using nickel-titanium (NiTi) rotary instruments. The combination of these techniques with NiTi re-instrumentation to remove residual filling materials has not been compared yet.
Article
Thermodynamics
Xingshuo Chen, Bayanheshig, Qingbin Jiao, Xin Tan, Wei Wang
Summary: A new computational model is established to quantitatively calculate the effect of ultrasound on mass transfer coefficient in liquid-solid reaction, showing that the mass transfer coefficient has a maximum value near the center of the silicon wafer and increases with reaction time. The enhancement of mass transfer coefficient is mainly due to acoustic streaming, while the increase with time is attributed to the thermal effect of ultrasound.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Multidisciplinary Sciences
Pablo Castelo-Baz, Francisco J. Rodriguez Lozano, Maria J. Ginzo-Villamayor, Ramon Miguens Vila, Juan Seoane-Romero, Jose Martin-Cruces, Benjamin Martin-Biedma
Summary: The study evaluated the efficacy of continuous apical negative ultrasonic irrigation on simulated lateral canals and the apical third in straight and curved root canals. Results showed significantly higher penetration of irrigant in the CANUI group compared to other irrigation methods. CANUI improves cleanliness of lateral canals and up to the working length in both straight and curved roots.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Pengfei Geng, Chunxi Li, Xiangyong Ji, Shuai Dong
Summary: Laminar flow dominates in microfluidic devices, making it difficult to efficiently improve mixing performance. A new method using microstreaming generated by ultrasonic resonance for fast and homogenized mixing has been proposed. The study found that the LVM method is more suitable for exploring acoustic streaming and microfluidic mixing performance, and different acoustic streaming patterns were observed in microchannels with different aspect ratios.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Songfei Su, Jinyan Chen, Pengzhan Liu, Mengxin Sun, Huanbo Cheng
Summary: This study presents a method for trapping and collecting airborne particulate matter using an ultrasonic device system, which has been validated through numerical simulations and experiments and investigated the impact of various parameters on collection performance. Due to its contactless and mild handling attributes, this ultrasonic airborne particulate matter sampler can avoid clogging and secondary pollution issues compared to other methods.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2021)
Article
Dentistry, Oral Surgery & Medicine
Cleusa Vieira, Luciano Bachmann, Carol De Andrade Lima Chaves, Yara Teresinha Correa Silva-Sousa, Silvio Rocha Correa Da Silva, Edson Alfredo
Summary: This study assessed the light transmission and bond strength of two types of fiberglass posts with different surface treatments. The results showed that Superposts had higher bond strength compared to Whiteposts, and the transmission rate decreased from the cervical to apical third of the root canal.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Warley Oliveira Silva, Pablo Amoroso-Silva, Patricia Olivares, Murilo Priori Alcalde, Flavio Rodrigues Ferreira Alves, Marilia Fagury Marceliano-Alves
Summary: This study compared the efficacy of XP-endo Finisher and PUI in removing hard tissue debris from curved canals. The results showed that XP-endo Finisher achieved a higher percentage of debris removal compared to PUI.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Cardiac & Cardiovascular Systems
L. van de Velde, E. Groot Jebbink, B. A. Zambrano, M. Versluis, J. Tessarek, M. M. P. J. Reijnen
Summary: The feasibility of using a compressed Supera stent as a flow diverting device for popliteal aneurysms was investigated. The study found that the dual-lined configuration of the stent demonstrated superior hemodynamic characteristics compared to the single-lined counterpart, with a reduction in velocities and improved prevention of thrombus formation.
CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Mariana Maciel Batista Borges, Rene J. B. Dijkstra, Flaviana Bombarda de Andrade, Marco Antonio Hungaro Duarte, Michel Versluis, Lucas W. M. van der Sluis, Xenos Petridis
Summary: Increasing NaOCl concentration led to higher biofilm removal and disruption, increased rate of biofilm loss and disruption, and more bubble formation. Mixing HEDP with NaOCl delayed the antibiofilm action of NaOCl without compromising its efficacy.
INTERNATIONAL ENDODONTIC JOURNAL
(2022)
Article
Surgery
Lennart van de Velde, Erik Groot Jebbink, Rob Hagmeijer, Michel Versluis, Michel M. P. J. Reijnen
Summary: This study investigates the potential of personalized computational fluid dynamics (CFD) in predicting endograft thrombosis by analyzing four patients treated with an endograft for occlusive disease of the superficial femoral artery (SFA). The results suggest that abnormal levels of time-averaged wall shear stress (TAWSS) may be associated with recurrent endograft thrombosis.
JOURNAL OF ENDOVASCULAR THERAPY
(2023)
Article
Acoustics
Hans Reinten, Yogesh Jethani, Arjan Fraters, Roger Jeurissen, Detlef Lohse, Michel Versluis, Tim Segers
Summary: In this study, the effect of microbubbles on ink jetting behavior was investigated using theoretical modeling and experiments. The resonance behavior of the ink channel with entrained microbubbles was studied, and a physical insight into the coupled dynamics of the system was provided.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Acoustics
Stefan Engelhard, Majorie van Helvert, Jason Voorneveld, Johan G. Bosch, Guillaume Lajoinie, Erik Groot Jebbink, Michel M. P. J. Reijnen, Michel Versluis
Summary: This study investigated the feasibility of 2-D blood flow quantification using high-frame-rate, contrast-enhanced ultrasound (HFR-CEUS) and particle image velocimetry (PIV) in patients with aortoiliac stents. The results showed that blood flow quantification with echoPIV was feasible in most locations, although there were some limiting issues during the quantification process. The stents did not adversely affect flow tracking in the aortoiliac region.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Christos Boutsioukis, Bram Verhaagen, Lucas W. M. van Der Sluis, Michel Versluis
Summary: This study aimed to develop a three-dimensional numerical model combining the oscillation of a tapered ultrasonic file with induced irrigant flow, and successfully predicted the file oscillation and irrigant flow inside root canals. The model was validated through comparison with experiments and theoretical solutions, showing good agreement between simulations, experiments, and theory.
INTERNATIONAL ENDODONTIC JOURNAL
(2022)
Article
Optics
Simon E. Michels, Guillaume Lajoinie, Saeid Hedayatrasa, Michel Versluis, Mathias Kersemans, Philippe F. Smet
Summary: Acoustically produced luminescence (APL) can be used for fast and easy mapping of ultrasound pressure fields. This study presents a theoretical model that allows the reconstruction of pressure and temperature fields from measured luminescence. The model is verified through simulation and experiment, and the application of APL in 3D ultrasound pressure field reconstruction is demonstrated.
JOURNAL OF LUMINESCENCE
(2022)
Article
Physics, Fluids & Plasmas
Maaike Rump, Youssef Saade, Uddalok Sen, Kamel Fezzaa, Michel Versluis, Detlef Lohse, Tim Segers
Summary: In this study, the mechanisms underlying bubble entrainment in a piezoacoustic printhead were investigated using ultrafast x-ray phase-contrast imaging and direct numerical simulations. Good agreement between experiments and numerics was demonstrated, and the different classes of bubble pinch-off and the flow-focusing effect driving bubble formation were revealed.
PHYSICAL REVIEW FLUIDS
(2022)
Review
Acoustics
Tim Boers, Sicco J. J. Braak, Nicole E. T. Rikken, Michel Versluis, Srirang Manohar
Summary: Ultrasound, the primary imaging modality in thyroid nodule management, has limitations such as variability, limited field-of-view and functional imaging. However, current developments in ultrasound technologies, such as three-dimensional-Doppler, -elastography, -nodule characteristics-extraction, and machine-learning algorithms, are aimed at overcoming these limitations. The use of three-dimensional ultrasound in thyroid ablative treatments and biopsies is a promising area of research. This review provides an overview of the current and future applications of ultrasound in thyroid nodule management and discusses the potential of new developments and trends to improve diagnosis, therapy, and follow-up.
JOURNAL OF CLINICAL ULTRASOUND
(2023)
Article
Multidisciplinary Sciences
Georges Chabouh, Benjamin van Elburg, Michel Versluis, Tim Segers, Catherine Quilliet, Gwennou Coupier
Summary: This study analyzes the buckling events of elastic shells through quasi-static compression experiments on lipidic shells and compares them with acoustic characterization results, deducing the mechanical characteristics of these shells.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Physics, Applied
Maaike Rump, Uddalok Sen, Roger Jeurissen, Hans Reinten, Michel Versluis, Detlef Lohse, Christian Diddens, Tim Segers
Summary: In practical applications of inkjet printing, the intermittent idle periods of printhead nozzles lead to evaporation of ink from the nozzle exit. This evaporation results in concentration gradients within the multicomponent inks, which can directly and indirectly affect the jetting process, reproducibility, and print quality. This study investigates selective evaporation of water-glycerol mixtures from an inkjet nozzle through experiments, analytical modeling, and numerical simulations. The research sheds light on the complex physiochemical hydrodynamics associated with ink drying at printhead nozzles and contributes to the stability and reproducibility of inkjet printing.
PHYSICAL REVIEW APPLIED
(2023)
Proceedings Paper
Acoustics
Ashkan Ghanbarzadeh-Dagheyan, Lennart van de Velde, Michel M. P. J. Reijnen, Michel Versluis, Erik Groot Jebbink
Summary: Most cases of cardiovascular diseases, including peripheral arterial disease (PAD) in the lower limb, can be prevented by a healthy diet and refrainment from smoking. Stent placement is the primary treatment for advanced symptoms of stenosis in the superficial femoral artery (SFA) for people with PAD. A 3D helical stent has been developed to induce swirling flow inside the artery and enhance treatment durability. The study investigates the effects of the helical stent on flow using contrast-enhanced 2D ultrasound Particle Image Velocimetry (PIV).
MEDICAL IMAGING 2023
(2023)
Proceedings Paper
Acoustics
Ashkan Ghanbarzadeh-Dagheyan, Erik Groot Jebbink, Michel Reijnen, Michel Versluis
Summary: This study investigates the nature of Dean flow in tubes of different curvatures using high-frame-rate contrast-enhanced 2D ultrasound and numerical simulations. The results show that the skewedness of Dean flow can be quantified using echo-PIV, and there is good agreement between experimental and numerical outcomes.
2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS)
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Majorie van Helvert, Stefan Engelhard, Jason Voorneveld, Marije van der Vee, Johan G. Bosch, Michel Versluis, Erik Groot Jebbink, Michel M. P. J. Reijnen
Summary: This study assessed the feasibility of blood flow quantification in untreated and stented femoral arteries using high-frame-rate contrast-enhanced ultrasound particle image velocimetry (echoPIV). The results showed that blood flow quantification was possible in most locations, but there were some technical limitations.
EUROPEAN RADIOLOGY EXPERIMENTAL
(2022)
Article
Pharmacology & Pharmacy
Joke Deprez, Silke Roovers, Guillaume Lajoinie, Heleen Dewitte, Tine Decruy, Julie Coudenys, Benedicte Descamps, Christian Vanhove, Michel Versluis, Dirk Elewaut, Peggy Jacques, Stefaan C. De Smedt, Ine Lentacker
Summary: In a murine arthritis model, the use of liposome-loaded microbubbles as theranostic agents faces challenges due to restricted microbubble passage and limited control over ultrasound conditions.
SCIENTIA PHARMACEUTICA
(2022)