Study on the Heat Source Insulation of a Thermal Bubble-Driven Micropump with Induction Heating

Liu, Bendong; Ma, Chenxu; Yang, Jiahui; Li, Desheng; Liu, Haibin

doi:10.3390/mi12091040

Cited by 5 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They can be flexibly integrated with different microfluidic devices or microrobots. For example, in microfluidics, bubbles can be remotely excited by an acoustic field to act as micromixers [ 4 , 5 ], micropumps [ 6 , 7 ], or microvalves [ 8 , 9 ], and they can operate upon particles and cells [ 10 , 11 ]. In addition, in microrobotics, bubbles can act as the manipulating or transmission components of microrobots [ 12 , 13 ], and the bubbles themselves can act as microrobots [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Review of Bubble Applications in Microrobotics: Propulsion, Manipulation, and Assembly

2022

View full text Add to dashboard Cite

In recent years, microbubbles have been widely used in the field of microrobots due to their unique properties. Microbubbles can be easily produced and used as power sources or tools of microrobots, and the bubbles can even serve as microrobots themselves. As a power source, bubbles can propel microrobots to swim in liquid under low-Reynolds-number conditions. As a manipulation tool, microbubbles can act as the micromanipulators of microrobots, allowing them to operate upon particles, cells, and organisms. As a microrobot, microbubbles can operate and assemble complex microparts in two- or three-dimensional spaces. This review provides a comprehensive overview of bubble applications in microrobotics including propulsion, micromanipulation, and microassembly. First, we introduce the diverse bubble generation and control methods. Then, we review and discuss how bubbles can play a role in microrobotics via three functions: propulsion, manipulation, and assembly. Finally, by highlighting the advantages and current challenges of this progress, we discuss the prospects of microbubbles in microrobotics.

show abstract

Section: Introductionmentioning

confidence: 99%

Review of Bubble Applications in Microrobotics: Propulsion, Manipulation, and Assembly

2022

View full text Add to dashboard Cite

show abstract

“…A voltage pulse lasting a few microseconds is applied generating a heat flux in excess of 500 W/mm

that vaporizes a thin layer of fluid above the resistor’s surface creating a vapor bubble which displaces fluid and performs mechanical work [ 15 ]. When placed asymmetrically in a channel with reservoirs at either end, a momentum imbalance upon collapse results in a net fluid pumping effect [ 5 , 13 , 16 , 17 , 18 ]. Beyond simple pumping, thermal bubble-driven micro-pumps are successfully used as micro-mixers [ 19 ], fluid jets [ 20 ], fluid sorters/routers [ 4 ], and have been used for decades in commercial inkjet printers [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Low-Cost Thermal Bubble-Driven Micro-Pumps

et al. 2022

View full text Add to dashboard Cite

Thermal bubble-driven micro-pumps are an upcoming actuation technology that can be directly integrated into micro/mesofluidic channels to displace fluid without any moving parts. These pumps consist of high power micro-resistors, which we term thermal micro-pump (TMP) resistors, that locally boil fluid at the resistor surface in microseconds creating a vapor bubble to perform mechanical work. Conventional fabrication approaches of thermal bubble-driven micro-pumps and associated microfluidics have utilized semiconductor micro-fabrication techniques requiring expensive tooling with long turn around times on the order of weeks to months. In this study, we present a low-cost approach to rapidly fabricate and test thermal bubble-driven micro-pumps with associated microfluidics utilizing commercial substrates (indium tin oxide, ITO, and fluorine doped tin oxide, FTO, coated glass) and tooling (laser cutter). The presented fabrication approach greatly reduces the turn around time from weeks/months for conventional micro-fabrication to a matter of hours/days allowing acceleration of thermal bubble-driven micro-pump research and development (R&D) learning cycles.

show abstract

Periodic Flows in Microfluidics

Mudugamuwa,

Roshan,

Hettiarachchi

et al. 2024

Small

View full text Add to dashboard Cite

Microfluidics, the science and technology of manipulating fluids in microscale channels, offers numerous advantages, such as low energy consumption, compact device size, precise control, fast reaction, and enhanced portability. These benefits have led to applications in biomedical assays, disease diagnostics, drug discovery, neuroscience, and so on. Fluid flow within microfluidic channels is typically in the laminar flow region, which is characterized by low Reynolds numbers but brings the challenge of efficient mixing of fluids. Periodic flows are time‐dependent fluid flows, featuring repetitive patterns that can significantly improve fluid mixing and extend the effective length of microchannels for submicron and nanoparticle manipulation. Besides, periodic flow is crucial in organ‐on‐a‐chip (OoC) for accurately modeling physiological processes, advancing disease understanding, drug development, and personalized medicine. Various techniques for generating periodic flows have been reported, including syringe pumps, peristalsis, and actuation based on electric, magnetic, acoustic, mechanical, pneumatic, and fluidic forces, yet comprehensive reviews on this topic remain limited. This paper aims to provide a comprehensive review of periodic flows in microfluidics, from fundamental mechanisms to generation techniques and applications. The challenges and future perspectives are also discussed to exploit the potential of periodic flows in microfluidics.

show abstract

Study on the Heat Source Insulation of a Thermal Bubble-Driven Micropump with Induction Heating

Cited by 5 publications

References 25 publications

Review of Bubble Applications in Microrobotics: Propulsion, Manipulation, and Assembly

Review of Bubble Applications in Microrobotics: Propulsion, Manipulation, and Assembly

Rapid Fabrication of Low-Cost Thermal Bubble-Driven Micro-Pumps

Periodic Flows in Microfluidics

Contact Info

Product

Resources

About