Preclinical study to improve microbubble-mediated drug delivery in cancer using an ultrasonic probe with an interchangeable acoustic lens [PDF]
Scientific Reports, 2021 Focused ultrasound with microbubbles (FUS-MBs) has shown that it can lead to an efficient drug delivery system (DDS) involving the oscillation and destruction of the MB but is limited in drug delivery due to its narrow pressure field.
Seunghyun Lee +6 more
doaj +2 more sources
Curvature Determination Method for Diverging Acoustic Lens of Underwater Acoustic Transducer [PDF]
SensorsUnderwater acoustic transducers need to expand the coverage of acoustic signals as much as possible in most ocean explorations, and the directivity indicators of transducers are difficult to change after the device is packaged, which makes the emergence ...
Minze Li +5 more
doaj +2 more sources
Design and Structure of a Non-Coaxial Multi-Focal Composite Fresnel Acoustic Lens for Synergistic Ultrasound Stimulation of Multiple Brain Regions [PDF]
SensorsTranscranial focused ultrasound (TcFUS) neuromodulation is hindered by skull-induced acoustic limitations. To enable synergistic multi-region brain stimulation, we designed non-coaxial multi-focal composite Fresnel acoustic lenses, including an ...
Ruiqi Wu +6 more
doaj +2 more sources
Broadband ultra-long acoustic jet based on double-foci Luneburg lens [PDF]
JASA Express Letters, 2021 In this paper, a gradient index acoustic metamaterial is proposed based on the concept of the optical modified generalized Luneburg lens (MGLL). With the MGLL, double-foci and high energy density between the two foci can be achieved, which enables the ...
Liuxian Zhao, Timothy Horiuchi, Miao Yu
doaj +1 more source
Helmholtz-Structured Two-Dimensional Super-Diffraction Meta-Lens
Frontiers in Physics, 2022 Focusing beyond the acoustic diffraction limit has always been expected, especially in acoustic imaging and ultrasonic therapy. Manipulating the acoustic waves beyond the diffraction limit offers an alternative application potential in high-resolution ...
He-He Li +8 more
doaj +1 more source
Results in Optics, 2021 Experimental and simulation investigations on laser-induced acoustic wave propagation and the optical refraction effects by varying the focusing lens distance from the water-surface have been presented.
Xiaosong Shi +3 more
doaj +1 more source
Evolvable Acoustic Field Generated by a Transducer with 3D-Printed Fresnel Lens
Micromachines, 2021 Evolvable acoustic fields are considered an effective method for solving technical problems related to fields such as biological imaging, particle manipulation, drug therapy and intervention.
Danfeng Wang +8 more
doaj +1 more source
Acoustic Luneburg lens based on a gradient metasurface for spoof surface acoustic waves [PDF]
JASA Express Letters, 2022 This letter presents the design and experimental demonstration of a gradient metasurface guiding spoof surface acoustic waves (SSAWs) in the manner of a Luneburg lens for sound.
Yi Zheng +7 more
doaj +1 more source
Simultaneously focusing electromagnetic and acoustic waves by double-physical-fields null medium
Frontiers in Materials, 2023 A novel double-physical-fields lens that can simultaneously focus acoustic and electromagnetic waves into a given region is designed based on double-physical-fields null medium, which can be realized by metal plates with subwavelength separations ...
Boyang Wu +10 more
doaj +1 more source
Sound Localization through Multi-Scattering and Gradient-Based Optimization
Mathematics, 2021 A gradient-based optimization (GBO) method is presented for acoustic lens design and sound localization. GBO uses a semi-analytical optimization combined with the principle of acoustic reciprocity.
Feruza Amirkulova +2 more
doaj +1 more source