Toward Enhanced Aerosol Particle Adsorption in Never‐Bursting Bubble via Acoustic Levitation and Controlled Liquid Compensation

Ji, Xiaoliang; Jiang, Pingsong; Jiang, Yichen; Chen, Hongyue; Wang, Weiming; Zhong, Wenxuan; Zhang, Xiaoqiang; Zhao, Wei; Zang, Duyang

doi:10.1002/advs.202300049

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…In literature, acoustic levitation is attracting attention for airborne analysis of liquid samples in small quantities in the range of sub‐microliter to a few microliters 7,16–25 . For studying chemical reactions without the influence of drying and resulting change of the chemical consistency, the mixing and the reaction in an airborne droplet should be completed as soon as possible.…”

Section: Introductionmentioning

confidence: 99%

Inertial mixing of acoustically levitated droplets for time‐lapse protein crystallography

Tsujino,

Sato,

Jia

et al. 2024

Droplet

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Varying the chemical consistency of acoustically levitated droplets opens up an in situ study of chemical and biochemical reactions in small volumes. However, the optimization of the mixing time and the minimization of the positional instability induced by solution dispensing are necessary for practical applications such as the study of the transient state of macromolecules crystallography during the ligand binding processes. For this purpose, we study the inertial mixing in a configuration compatible with the room‐temperature crystallography using the acoustic levitation diffractometer, therein solution drops ejected at high velocity collide and coalesce with droplets dispensed on acoustically levitated and rotating polymer thin‐film sample holders. With the proposed method, we are able to achieve the mixing time of ∼0.1 s for sub‐micro and a few microliter droplets. The observed short mixing time is ascribed to the rapid penetration of the solution into the droplets and confirmed by a computational fluid dynamic simulation. The demonstrated accelerated solution mixing is tested in a pilot time‐lapse protein crystallography experiment using the acoustic levitation diffractometer. The results indicate the detection of transient ligand binding state within 2 s after the solution dispensing, suggesting the feasibility of the proposed method for studying slow biochemical processes.

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Section: Introductionmentioning

confidence: 99%

Inertial mixing of acoustically levitated droplets for time‐lapse protein crystallography

Tsujino,

Sato,

Jia

et al. 2024

Droplet

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Toward Enhanced Aerosol Particle Adsorption in Never‐Bursting Bubble via Acoustic Levitation and Controlled Liquid Compensation

Jiang

et al. 2023

Advanced Science

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Bubbles in air are ephemeral because of gravity‐induced drainage and liquid evaporation, which severely limits their applications, especially as intriguing bio/chemical reactors. In this work, a new approach using acoustic levitation combined with controlled liquid compensation to stabilize bubbles is proposed. Due to the suppression of drainage by sound field and prevention of capillary waves by liquid compensation, the bubbles can remain stable and intact permanently. It has been found that the acoustically levitated bubble shows a significantly enhanced particle adsorption ability because of the oscillation of the bubble and the presence of internal acoustic streaming. The results shed light on the development of novel air‐purification techniques without consuming any solid filters.

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New insights into suspended drops: When soft matter meets acoustic levitation

Chen,

Hong,

Zang

2024

Droplet

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Acoustic levitation has developed into a popular but elegant tool for the study of drops as well as soft matter due to its exceptional levitation capabilities to a variety of liquid samples. The acoustically levitated drops offer opportunities for the investigation of a wide range of fundamental issues related to liquid drops. In this review, the unique physics/chemical processes involved in acoustically levitated drops are dealt with. We first introduce the dynamics of the acoustically levitated drops, including drop oscillation, coalescence, and the associated capillary phenomena. The bubble formation and stability are also discussed. Depending on the inhibition of solid surfaces and the nonlinear effects of ultrasound, the self‐assembly of colloidal particles at the air–liquid interface as well as granular matter in air is reviewed. In particular, the exploration of biological drops by using acoustic levitation is also highlighted. In the end, the concept of acoustic‐levitation‐fluidics and possible potential topics are proposed.

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Toward Enhanced Aerosol Particle Adsorption in Never‐Bursting Bubble via Acoustic Levitation and Controlled Liquid Compensation

Cited by 3 publications

References 39 publications

Inertial mixing of acoustically levitated droplets for time‐lapse protein crystallography

Inertial mixing of acoustically levitated droplets for time‐lapse protein crystallography

Toward Enhanced Aerosol Particle Adsorption in Never‐Bursting Bubble via Acoustic Levitation and Controlled Liquid Compensation

New insights into suspended drops: When soft matter meets acoustic levitation

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