Development of a distributed Bernoulli gripper for ultra-thin wafer handling

Liu, Dong; Liang, Wenyu; Zhu, Haiyue; Teo, Chek Sing; Tan, Kok Kiong

doi:10.1109/aim.2017.8014028

Cited by 8 publications

(8 citation statements)

References 13 publications

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“…However, we noted that many handling steps in the improved procedures in [38] were completed manually, which will scale up to mass production. Thus, the first key innovation area for yield loss reduction is to improve wafer handling technologies, such as non-contact Bernoulli gripper [39]. Wafer handling is even more essential for wafers thinner than 80 µm due to the extremely high breakage rate.…”

Section: Why Is Thin Si Not Here Yet? Challenges and Innovation Oppor...mentioning

confidence: 99%

Revisiting thin silicon for photovoltaics: a technoeconomic perspective

Liu

Sofia

Laine

et al. 2020

Energy Environ. Sci.

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Crystalline silicon comprises 90% of the global photovoltaics (PV) market and has sustained a nearly 30% cumulative annual growth rate, yet comprises less than 2% of electricity capacity. To sustain this growth trajectory, continued cost and capital expenditure (capex) reductions are needed. Thinning the silicon wafer well below the industry-standard 160 µm, in principle reduces both manufacturing cost and capex, and accelerates economicallysustainable expansion of PV manufacturing. In this Analysis piece, we explore two questions surrounding adoption of thin silicon wafers: (a) what are the market benefits of thin wafers? (b) what are the technological challenges to adopt thin wafers? In this Analysis, we re-evaluate the benefits and challenges of thin Si for current and future PV modules using a comprehensive technoeconomic framework that couples device simulation, bottom-up cost modeling, and a sustainable cash-flow growth model. When adopting an advanced technology concept that features sufficiently good surface passivation, the same high efficiencies are achievable for both 50-µm wafers and 160-µm ones. We then quantify the economic benefits for thin Si wafers in terms of poly-Si-to-module manufacturing capex, module cost, and levelized cost of electricity (LCOE) for utility PV systems. Particularly, LCOE favors thinner wafers for all investigated device architectures, and can potentially be reduced by more than 5% from the value of 160-µm wafers. With further improvements in module efficiency, an advanced device concept with 50-µm wafers could potentially reduce manufacturing capex by 48%, module cost by 28%, and LCOE by 24%. Furthermore, we apply a sustainable growth model to investigate PV deployment scenarios in 2030. It is found that the state-of-theart industry concept could not achieve the climate targets even with very aggressive financial scenarios, therefore the capex reduction benefit of thin wafers is advantageous to facilitate faster PV adoption. Lastly, we discuss the remaining technological challenges and areas for innovation to enable high-yield manufacturing of high-efficiency PV modules with thin Si wafers. Broader ContextClimate change is among the greatest challenges facing humankind today. Given the urgency of transitioning to a carbon-neutral energy system, we need to accelerate the deployment of existing renewable technology in the near term. With rapid technological progress and cost decline, silicon photovoltaics (PV) modules is a proven technology to be deployed to a multi-terawatt scale by 2030. Despite the high growth rate in the past decade, the capital-intense nature of silicon PV manufacturing hinders the sustainable growth of the industry. Today, the most significant contribution to capital expenditure (capex) of PV module fabrication still comes from silicon wafer itself. Reducing wafer thickness would have a proportionate effect on wafer and poly capex; however, wafer thickness reduction has been much slower than anticipated. This study revisits the concept of wafer thinning...

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Section: Why Is Thin Si Not Here Yet? Challenges and Innovation Oppor...mentioning

confidence: 99%

Revisiting thin silicon for photovoltaics: a technoeconomic perspective

Liu

Sofia

Laine

et al. 2020

Energy Environ. Sci.

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“…A distinctive element of JGDs is the presence of the annular gap in the plane of their end face -Ozcelik, Erzincanli (2002; Mykhailyshyn, Xiao (2022); Ozcelik et al (2003); Brun, Melkote (2006; Renn et al (2008); Toklu, Erzincanli (2012); Giesen et al (2013); Liu et al (2017Liu et al ( , 2019; Savkiv et al (2019aSavkiv et al ( , 2019b; Mechatronic Systemtechnik GmbH (2021). Load-bearing characteristics of these grippers exceed those of the previous ones; therefore, they are used for gripping parts weighing up to 10 kg.…”

Section: Classification Of Jgdsmentioning

confidence: 99%

A Systematic Review on Pneumatic Gripping Devices for Industrial Robots

et al. 2022

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Based on the literature review, the article presents the analysis of approaches to classifying Gripping Devices (GDs) of Industrial Robots (IRs) and substantiates the need for systematising Pneumatic GDs (PGDs). The authors propose a classification of well-known PGDs, in which the holding force of the Manipulated Object (MO) is formed under the action of gas-dynamic effects. A general classification of PGDs with features common to all PGD subtypes is proposed: PGD type; contact type; object base type; object centring type; specialisation type; working range; availability of additional devices; the number of grippers; type of control; type of attachment to the robot. Each feature of the general PGD classification, which affects PGD characteristics, is analysed, and a usage example is given. The advantages of each feature included in the general PGD classification are also considered. For a more detailed classification, PGDs are divided into the following types: Vacuum GDs (VGDs), Jet GDs (JGDs), Combined PGDs (CPGDs). For VGD, the main distinguishing features are highlighted, which are the vacuum creation method, effect/actuator, stepwise nozzle, suction cup type, suction material type. The main distinguishing features of JGDs include using a jet of compressed air, the shape of nozzle elements, the number of nozzle elements, the direction of gas flows, type of surface of the MO. The main distinguishing features of CPGD include the type of combination and function performed. The main features are given for each classification, and the advantages/disadvantages of the most typical representatives of GDs are described. The authors identify the main development directions for GDs at the present stage of robotisation of production processes, medicine, military and space technology, etc. Based on the analysis and systematisation of literature data, the authors define the main promising areas of research that will be actively developed soon: optimisation of grippers’ design, flexible grippers, additive manufacturing (3D-printing) when creating grippers, collaborative grippers, modular grippers, universal grippers, grippers based on new materials, new effects in grippers, bionic and medical grippers, simulation and rendering of the gripping process.

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“…In [42,[66][67][68][69][70][71][72][73], the authors investigate this question from the point of view of minimizing the energy costs for manipulating objects along different trajectories. Another direction of BGD research is on the substantiation of the parameters of the structural elements and the influence of the parameters of gripping devices on power characteristics [55,56,[74][75][76][77][78][79][80][81][82]]. Brun's articles [74][75][76] substantiate the effect of the BGD parameters on the deformation of the manipulated object at various input pressures.…”

Section: Introductionmentioning

confidence: 99%

“…Brun's articles [74][75][76] substantiate the effect of the BGD parameters on the deformation of the manipulated object at various input pressures. The influence of the parameters of the gripping surface with slots on the possibility of gripping flexible and thin objects is investigated in articles [55,[76][77][78]. In reference [79], the influence of the parameters of the friction elements on the power characteristics of BGDs with cylindrical nozzles is discussed.…”

Section: Introductionmentioning

confidence: 99%

Influence of Inlet Parameters on Power Characteristics of Bernoulli Gripping Devices for Industrial Robots

Mykhailyshyn

Xiao

2022

Applied Sciences

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There is a wide variety of gripping devices with various parameters at the present stage of development of robotics. However, the existing literature about the power characteristics of pneumatic gripping devices does not provide any analysis of the different types of input parameters other than supply pressure and flow characteristics, whereas the input parameters completely determine the technical characteristics of the gripping devices of industrial robots. In particular, for pneumatic grippers, the input parameters play a crucial role in their productivity and energy efficiency. This paper fills the gap by providing a study of the impact of such parameters on the power and energy characteristics of Bernoulli ejection grippers for industrial robots, including: the parameters of the compressed air inlet design, the parameters of the fitting for compressed air supply, the diameter of the hose for compressed air supply, and the size of the vacuum zone. First, this paper presents the results of theoretical studies and finite element method for determining the distribution of pressure on the surface of an object of manipulation, which allows one to determine the lifting force of the Bernoulli gripping devices of an industrial robot. It is determined that the horizontal air flow to the capture chamber, compared with that of the vertical, should be used to ensure the maximum possible lifting force. Structures and constriction in fittings, which are used to supply compressed air to the chamber of Bernoulli gripping devices, are considered. Then, the dependencies of the influence of narrowing the fittings on the power characteristics of gripping devices are presented.

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Development of a distributed Bernoulli gripper for ultra-thin wafer handling

Cited by 8 publications

References 13 publications

Revisiting thin silicon for photovoltaics: a technoeconomic perspective

Revisiting thin silicon for photovoltaics: a technoeconomic perspective

A Systematic Review on Pneumatic Gripping Devices for Industrial Robots

Influence of Inlet Parameters on Power Characteristics of Bernoulli Gripping Devices for Industrial Robots

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