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  • 1
    Online Resource
    Online Resource
    Performance analysis of cascade type three-chamber piezoelectric pump
    Springer Science and Business Media LLC ; 2024
    In:  Microsystem Technologies Vol. 30, No. 1 ( 2024-01), p. 83-92
    Details
    In: Microsystem Technologies, Springer Science and Business Media LLC, Vol. 30, No. 1 ( 2024-01), p. 83-92
    Type of Medium: Online Resource
    ISSN: 0946-7076 , 1432-1858
    URL: Article
    DOI: 10.1007/s00542-023-05574-y
    RVK:
    ZG 1100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2024
    detail.hit.zdb_id: 1476561-5
    detail.hit.zdb_id: 1223008-X
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  • 2
    Online Resource
    Online Resource
    Research on a large opening and high flow rate piezoelectric pump with straight arm wheeled check valve
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 3 ( 2022-03-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 3 ( 2022-03-01)
    Abstract: Piezoelectric pumps are applied in cooling systems of microelectronic devices because of their small size. However, cooling efficiency is limited by the low flow rate. A straight arm wheeled check valve made of silica gel was proposed, which can improve the flow rate of piezoelectric pumps, solve the influence of glue aging on the sealing ability of a wheeled check valve, and reduce the size of piezoelectric pumps. This paper discusses the influence of the valve arm number (N = 2, 3, and 4), the valve arm width (W = 1.0, 1.2, and 1.4 mm), and the valve thickness (T = 0.6, 0.8, and 1.0 mm) on the flow rate characteristics of piezoelectric pumps. When valve opening rises, the flow rate increases. The simulation results show that valves with 2 valve arm number, 0.6 mm valve thickness, and 1.0 mm valve arm width have maximum valve opening. The experimental results show that piezoelectric pumps with different valve parameters have different optimal frequencies. In addition, the maximum flow rate is 431.6 ml/min at 220 V and 70 Hz. This paper provides a reference for the application of piezoelectric pumps in cooling systems.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0076649
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 3
    Online Resource
    Online Resource
    A piezoelectric-driven resonant unit for high-viscosity-liquid injection
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 9 ( 2022-09-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 9 ( 2022-09-01)
    Abstract: In this paper, a piezoelectric-driven resonant unit for high-viscosity-liquid injection is introduced. For high-viscosity-liquid delivery in low voltage and frequency, a vibrating block is fixed under the rectangular piezoelectric actuator, to transport the vibration to the chamber, leading the unit into resonant state. The valveless chamber is designed eccentrically to promote the tendency of positive flow and diminish the backflow. Numerical simulation and analyses are carried out to optimize the chamber design, and the experiments with liquid in different viscosity, radius of the vibrating block, and the influence of gravity are conducted. The unit achieves a fast delivery speed with a relatively high liquid viscosity compared to the similar study, as the highest flow rate of 52.4, 88.4, and 103.9 ml/min at 100 V, 60 Hz with the liquid of 54.42, 21.13 cP, and water, respectively. The flow rate drops by 40.7%, while the liquid viscosity increases 157.5%.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0084643
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 4
    Online Resource
    Online Resource
    Performance study of a valveless piezoelectric pump with built-in semi-arc bluffbody antique tower channel
    AIP Publishing ; 2023
    In:  Review of Scientific Instruments Vol. 94, No. 9 ( 2023-09-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 94, No. 9 ( 2023-09-01)
    Abstract: According to the bluffbody bypass effect, the irregular bluffbody can be used to improve the valveless piezoelectric pump. This paper designs a semi-arc bluffbody based on the bluffbody bypassing principle to alleviate the phenomenon of fluid backflow. The fluid passes through the shape of the antique tower to further enhance pumping efficiency. A positive fluid flow mechanism in the pump cavity is theoretically derived. The simulation of the velocity and pressure distribution in the tower-shaped channel of the pump cavity leads to the conclusion that the forward flow has better performance than the reverse flow, and the correctness of the theory is also verified. Experiments further proved that the volume of fluid in the forward direction was reduced by 10.8% when compared to the reverse direction. The study of the height of different semi-arc bluffbody and the angle of the tower trough shows that as the height and angle increase, the flow rate grows first and then reduces. The maximum flow rate is 243.83 ml/min when the bluffbody height is 4 mm and the channel angle is 20° (220 V, 85 Hz).
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0168736
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 5
    Online Resource
    Online Resource
    Recent studies on the application of piezoelectric pump in different fields
    Springer Science and Business Media LLC ; 2023
    In:  Microsystem Technologies Vol. 29, No. 5 ( 2023-05), p. 663-682
    Details
    In: Microsystem Technologies, Springer Science and Business Media LLC, Vol. 29, No. 5 ( 2023-05), p. 663-682
    Type of Medium: Online Resource
    ISSN: 0946-7076 , 1432-1858
    URL: Article
    DOI: 10.1007/s00542-023-05453-6
    RVK:
    ZG 1100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 1476561-5
    detail.hit.zdb_id: 1223008-X
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  • 6
    Online Resource
    Online Resource
    A Novel Direct‐Current Piezoelectric Energy Harvester with Sustainable Output
    Wiley ; 2023
    In:  physica status solidi (a) Vol. 220, No. 1 ( 2023-01)
    Details
    In: physica status solidi (a), Wiley, Vol. 220, No. 1 ( 2023-01)
    Abstract: The crest factor is an important indicator to measure the performance of the load. To reduce the crest factor of the system and improve the internal stability of the circuit, this article proposes a novel direct‐current piezoelectric energy harvester with sustainable output (S‐PEH). Voltage superposition with phase coupling could significantly improve the stability of the circuit system and reduce the interference and damage of transient pulses to the system. Here, the influence of angle size and phase number on the output performance of S‐PEH is studied. S‐PEH could produce a more stable voltage output with a low crest factor through phase coupling. At 3 P 120°, the optimum MAX voltage and root mean square (RMS) voltage are 29.06 and 16.55 V. The maximum RMS power is 1.38 mW. When the rotating speed is 550 r min −1 , the lowest crest factor is 1.35. The charging rate is four times higher than a single‐group piezoelectric patch. Experiments show that S‐PEH can make light‐emitting diodes (LEDs) and calculators work stably. These results show that S‐PEH has great prospects in the power supply of wireless sensor networks and microelectronic devices.
    Type of Medium: Online Resource
    ISSN: 1862-6300 , 1862-6319
    URL: Issue
    URL: Article
    DOI: 10.1002/pssa.v220.1
    DOI: 10.1002/pssa.202200469
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 1481091-8
    detail.hit.zdb_id: 208850-2
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  • 7
    Online Resource
    Online Resource
    Development of an inertial piezoelectric pump with separable chamber
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 3 ( 2022-03-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 3 ( 2022-03-01)
    Abstract: This paper presents an inertial pump with rectangular piezoelectric actuators. The mass block adhered at the free end of the actuator increases the actuator deformation, and the pump chamber is separable. Theoretical and experimental analyses are conducted. The different drive modes with the mass block, different excitation electric signals, and their influence on the performance of the piezoelectric pump are investigated. The drive mode is divided into the mass block adhered with two rectangular piezoelectric actuators, one of the actuators, and actuators without mass blocks. The square wave, sine wave, and triangle wave constitute different excitation electric signals. The experimental results prove that the pump with the mass block adhered with two rectangular piezoelectric actuators and driven by the square wave has a wide working frequency range and high performance. The highest flow rate reached is 72 ml/min at 160 V, 20 Hz. The pump with the mass block adhered with one of the actuators and driven by the square wave generates the loudest noise of 97.6 dB at 160 V, 35 Hz.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0080117
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 8
    Online Resource
    Online Resource
    Research on the performance of a valveless piezoelectric pump with a herringbone bluffbody
    AIP Publishing ; 2023
    In:  Review of Scientific Instruments Vol. 94, No. 4 ( 2023-04-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 94, No. 4 ( 2023-04-01)
    Abstract: Aiming to improve the output performance of a valveless piezoelectric pump, this article presents a valveless piezoelectric pump with a herringbone bluffbody. The bluffbody is herringbone shaped and distributed in a tapered chamber. The tapered chamber and the bluffbody create a large reverse resistance in the chamber, thus effectively mitigating the backflow problem of the valveless pump. The theoretical analysis determined the relationship between the flow rate and the flow resistance coefficient as well as the variation of the pump chamber volume. It was also concluded that the piezoelectric pump has the best output flow at intrinsic frequencies. Through simulation calculations, the effectiveness of the bluffbody structure in mitigating backflow in piezoelectric pumps is analyzed to provide a reference for experimental prototype design parameters. Finally, a range of prototypes is produced for experimentation. The experimental results show that the designed bluffbody shape can increase the return energy loss to effectively mitigate the return flow issues of the valveless piezoelectric pump, thus improving the output performance. The optimum output flow rate is 158.5 ml/min at 200 V and 52.5 Hz and the tapered chamber angle of 6°, and the bluffbody height, angle, and quantities are 2 mm, 40°, and 2, respectively. The construction of the valveless piezoelectric pump proposed in this research can be used as a reference for subsequent improvements in the performance of valveless piezoelectric pumps, and due to the high output performance, experimental studies can be carried out in applications such as dispensing and heat dissipation in electronic products.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0128739
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 9
    Online Resource
    Online Resource
    A compound cantilever beam piezoelectric harvester based on wind energy excitation
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 8 ( 2022-08-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 8 ( 2022-08-01)
    Abstract: In this paper, a compound cantilever beam based piezoelectric energy harvester (CCBPH) is proposed. This piezoelectric energy harvester uses vibrations caused by vortex excitation behind the winding fluid to harvest wind energy. In particular, this structure uses vortex excitation formed behind a vertically suspended cylindrical winding fluid to cause the vibration of the cylindrical winding fluid, which then indirectly excites the piezoelectric element. The CCBPH consists of a fixed support, a cantilever beam, magnet-1 and magnet-2, a support beam, two piezoelectric units-PVDF (polyvinylidene fluoride), a compound cantilever beam, and a cylindrical winding fluid. We investigated the parameters affecting the structure and verify the effectiveness of the energy harvester through the design of the structure, simulation analysis, and experiments. The experimental results show that the CCBPH can obtain the maximum output voltage from the energy harvester at a wind speed of 18 m/s. The maximum output power was achieved with an external load resistance of 2000 kΩ. By comparison, it is found that the maximum output power is 0.095 mW when the distance between two magnets is 20 mm and the mass ratio is 1:2 for copper.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0093123
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 10
    Online Resource
    Online Resource
    Performance analysis of a combined rhinoceros horn and V-channel valveless piezoelectric pump
    Springer Science and Business Media LLC ; 2023
    In:  Microsystem Technologies Vol. 29, No. 9 ( 2023-09), p. 1375-1387
    Details
    In: Microsystem Technologies, Springer Science and Business Media LLC, Vol. 29, No. 9 ( 2023-09), p. 1375-1387
    Type of Medium: Online Resource
    ISSN: 0946-7076 , 1432-1858
    URL: Article
    DOI: 10.1007/s00542-023-05518-6
    RVK:
    ZG 1100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 1476561-5
    detail.hit.zdb_id: 1223008-X
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