A low-stress and low temperature gradient microgripper for biomedical applications

Gaafar, Einas; Zarog, Musaab; member, Ieee senior

doi:10.1007/s00542-017-3325-9

Cited by 24 publications

(13 citation statements)

References 11 publications

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“…In the medical industry, different types of piezoelectric actuated microgrippers have been developed and utilised. It was suggested that microtechnological devices such as microgrippers can be used to assist in minimally invasive surgery and other challenging scenarios regarding to technicality and small-scale sizes (Gaafar and Zarog 2017). One type of gripper developed in 2017 contained a comb structure described above and different types of materials were studied for use in the conducting and insulating components of the gripper (Gaafar and Zarog 2017).…”

Section: Electrostatic Microgrippermentioning

confidence: 99%

“…One type of gripper developed in 2017 contained a comb structure described above and different types of materials were studied for use in the conducting and insulating components of the gripper (Gaafar and Zarog 2017). The applied voltage was of 100 V with the displacement of the two material types of 19.66 lm and 32.5 lm, this highlights that the choice of material is an important factor to consider (Gaafar and Zarog 2017). Another form of electrostatically actuated comb driven microgripper was developed in 2012 where the researchers simulated the grippers with various shapes of combs (Kalaiarasi and Thilagar 2012).…”

Section: Electrostatic Microgrippermentioning

confidence: 99%

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Microgripper design and evaluation for automated µ-wire assembly: a survey

2020

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Microgrippers are commonly used for micromanipulation of micro-objects from 1 to 100 lm and attain features of reliable accuracy, low cost, wide jaw aperture and variable applied force. This paper aim is to review the design of different microgrippers which can manipulate and assemble l-wire to PCB connectors. A review was conducted on microgrippers' technologies, comparing fundamental components of structure and actuators' types, which determined the most suitable design for the required micromanipulation task. Various microgrippers' design was explored to examine the suitability and the execution of requirements needed for successful micromanipulation.

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Section: Electrostatic Microgrippermentioning

confidence: 99%

Section: Electrostatic Microgrippermentioning

confidence: 99%

Microgripper design and evaluation for automated µ-wire assembly: a survey

2020

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“…Silicon and silicon dioxide have often been utilized in the development of microgripper structures (Gaafar and Zarog 2017;Chen et al 2009). It is capable of achieving large displacement with an applied force.…”

Section: Gripper Materialsmentioning

confidence: 99%

Design process and simulation testing of a shape memory alloy actuated robotic microgripper

2019

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Microgrippers are commonly used for micromanipulation of micro-objects with dimensions from 1 to 100 lm and attain features of reliable accuracy, low cost, wide jaw aperture and variable applied force. This paper studies the design process, simulation, and testing of a microgripper which can manipulate and assemble a platinum resistance temperature probe, made from a 25 lm diameter platinum wire, a 20 mm diameter tinned copper wire, and a printed circuit board type connector. Various microgripper structures and actuator types were researched and reviewed to determine the most suitable design for the required micromanipulation task. Operation tests using SolidWorks and ANSYS software were conducted to test a parallelogram structure with flexible single-notch hinges. The best suited material was found to be Aluminium alloy 7075-T6 as it was capable of producing a large jaw tip displacement of 0.7 mm without exceeding its tensile yield strength limit. A shape memory alloy was chosen as a choice of actuator to close the microgripper jaws. To ensure a repeatably accurate datum point, the final microgripper consisted of a fixed arm and a flexible arm. An optimisation process using ANSYS studied the hinge thickness and radius dimensions of the microgripper which improved its deflection whilst reducing the experienced stress.

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“…Bu aktüatörler küçük bir boyuta, yüksek doygunluk faktörüne, yüksek yer değiştirme aralığına ve düşük voltaj hareketine sahiptir. Bu özellikler mikro-aktüatörleri biyomedikal, mikro robotik, mikro montaj ve mikro optik gibi uygulamalarda kullanılabilir hale getirmektedir [14][15][16]. Mikro-aktüatörler, genellikle büyük yer değiştirme aralığı, yüksek çalışma frekansları, minyatürleştirme, paketleme ve entegrasyon tesislerini gerektiren çok çeşitli uygulamalar tarafından kullanılır [17][18][19].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Görüntü işleme algoritması kullanarak elektrotermal mikro-aktüatörün karakterizasyonu

Ülkir¹

2021

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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 Fabrication of microactuator  Fabrication with digital light processing  Characterization of the electrothermal microactuator In this study, the characterization of the electrothermal micro-actuator fabricated using digital light processing, which is one of the 3D fabrication methods, was realized using the image processing algorithm. For this aim, three different experiments were conducted during the fabrication process. During the fabrication process of the first two experiments, deterioration or breakage occurred in the micro-actuator structure. These problems did not occur in the fabrication of the 3rd experiment. Characterization process was done with the microactuator fabricated as a result of experiment 3. Based on the experimental results, the fabrication and displacement of the micro-actuator is carried out successfully. Figure A. Fabrication of electrothermal micro-actuator a) fabrication as a result of experiment 1 b) fabrication as a result of experiment 2, fabrication as a result of experiment 3 Purpose: This work aims to fabricate electrothermal micro-actuator with digital light processing method and characterize it with image processing algorithm. Theory and Methods: This work consists of three main phases, namely, design, fabrication and characterization. Results: It has been observed that the support structures used on the micro-actuator have a great influence on the 3D fabrication process. In the characterization process, when a voltage higher than 6V is applied to the micro actuator, it was observed that breakages or deteriorations occurred in its structure. Conclusion: It is concluded that the support structures are very important in the fabrication process of the micro-actuator using 3D fabrication technique. On the other hand, in the characterization process, it has been determined that the displacement of the micro-actuator is directly proportional to the applied voltage, but its structure is distorted after a point. As a result of experimental studies, the maximum displacement was measured as 3.84 µm at 6V voltage. As the actuator design is bidirectional, the maximum displacement of the micro-actuator was determined to be 7.68 µm.

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A low-stress and low temperature gradient microgripper for biomedical applications

Cited by 24 publications

References 11 publications

Microgripper design and evaluation for automated µ-wire assembly: a survey

Microgripper design and evaluation for automated µ-wire assembly: a survey

Design process and simulation testing of a shape memory alloy actuated robotic microgripper

Görüntü işleme algoritması kullanarak elektrotermal mikro-aktüatörün karakterizasyonu

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