Customized iris diaphragm enables quantitative evolution from liquid droplet to free-standing thin film

Vincenzo Ferraro; Zhe Wang; Lisa Miccio; Veronica Vespini; Volodymyr Tkachenko; Sara Coppola; Pier Luca Maffettone

doi:10.1117/12.2675330

11 August 2023 Customized iris diaphragm enables quantitative evolution from liquid droplet to free-standing thin film

Vincenzo Ferraro, Zhe Wang, Lisa Miccio, Veronica Vespini, Volodymyr Tkachenko, Sara Coppola, Pier Luca Maffettone

Proceedings Volume 12622, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI; 126221A (2023) https://doi.org/10.1117/12.2675330
Event: SPIE Optical Metrology, 2023, Munich, Germany

Conference Poster

Abstract

With the improvement in industrial production technologies, many products related to thin-film materials have been produced, especially in the field of daily chemistry. Because of its special physical and chemical properties, film material has become the best carrier, and a detailed measurement of its characteristics is highly required. The thickness characterizing of the thin film is a long-term challenge, one of the well-known methods is the interferometry. Recently, digital holographic approaches have been considered as one of the best candidates for thin film thickness mapping; it allows real-time, contactless, label-free, and full-field thickness measurement. Thanks to above features, holography-based thin film fabrication paradigm has been established rapidly. In this framework, we present a strategy for forming free-standing thin liquid film under the monitoring of Digital Holography (DH): a customized iris diaphragm has been used to stretch the liquid droplet inside to a thin liquid film. Under the condition of quantitatively adjusting the opening speed and radius of the iris, the precise manufacturing of the desired thin film can be achieved. In this case, DH is implemented to provide the thickness distribution of the droplet during stretching; the real-time thickness mapping of thin film builds up a close loop controlling for fabrication process. Based on this strategy, we performed a series experiments of thin liquid films fabrication and the opening process of thin film have been studied by spatiotemporal modeling. The results show that customized iris diaphragm is a good strategy for quantitative fabrication of thin liquid films.

Citation Download Citation

Vincenzo Ferraro, Zhe Wang, Lisa Miccio, Veronica Vespini, Volodymyr Tkachenko, Sara Coppola, and Pier Luca Maffettone "Customized iris diaphragm enables quantitative evolution from liquid droplet to free-standing thin film", Proc. SPIE 12622, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI, 126221A (11 August 2023); https://doi.org/10.1117/12.2675330

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available