Plasma technologies for materials & surfaces

Plasma surface engineering embraces a large range of processes aimed to drastically change the surface properties of materials preserving the bulk ones. This includes for instance corrosion protective coatings, barrier layers for food packaging, surface hydrophobization/hydrophilization, enhanced surface dyebility/printability or adhesion. In particular plasma-assisted deposition can be used to produce films on a solid material by promoting chemical reactions at the plasma/substrate interface. Indeed, by using sacrificial layers/substrates free standing nano-films can be produced. The processes can be performed by using both low and atmospheric pressure plasmas in direct and remote approach, injecting the film precursors in gas, vapor and aerosol form.

Plasma reactors design

Low pressure plasma reactor design involves matching of sample/chamber size, gas flow rate/pumping speed, electrodes potential distribution and power sources. Furthermore, often heating/chilling of electrodes or substrates is necessary, as well as bias, to control surface ion bombardment. Technologies implemented by plasmas are: PECVD, remote plasma MOCVD, sputtering, etching, plasma MBE.

Atmospheric pressure dielectric barrier discharge reactors for surface treatment of materials need a smart design, assembly and optimization. Reactors design and electrode configurations are tailored to address the requirements of specific plasma processes (e.g., deposition of thin films from precursors in vapor or aerosol form) and, importantly, the shape and dimension of the substrate to be treated. Atmospheric pressure reactors include also plasma jets, i.e., remote plasma sources in which the plasma is allowed to exit from the region where it is generated and to propagate in the external environment towards the substrate to be treated.

Plasma Surface Engineering

Strategies differ depending on the addressed surface property. Typically both low and atmospheric pressure plasma processes can be carried out.

Barrier and protective coatings consists in inorganic film (SiOx or SiNx) commonly deposited from organosilicon fed plasmas.

The control of polymer adhesion properties and alike (dyebility) can be reached by grafting of polar groups (oxygen or nitrogen containing ones) in plasma fed with O2, N2 or H2O.

Hydrophobization can be achieved either by PECVD of fluorocarbon and organosilicon coatings or by grafting of F-contaning functionalities (e.g., CF4-fed plasma)

Plasma processing of 3D materials and powders

Plasma treatment of complex three-dimensional (3D) porous materials (membranes, scaffold, fabrics, etc.) for fine tuning of the surface chemistry of the outer and inner regions of the substrates, while leaving the porous architecture intact. The activity includes also the plasma surface functionalization of powders and granules for several applications in the field of catalysis, absorbing materials, biomaterials, etc..

Strategies

Low pressure and atmospheric pressure PECVD, plasma grafting of functional groups and plasma sputtering of metal and metal/oxide carried out both in direct and remote approach. Reactors design and electrode configurations are fitted to the specific shape and dimension of the substrates to be treated.

Facilities & Labs

Plasma technology lab @URT Bari

PACVD @URT Bari

Space ship @URT Bari

PLASMATROLL @URT Bari

Atmospheric pressure parallel plate DBD @URT Bari

People

Maria_LosurdoMaria

Losurdo

CNR Director of Research

fabio_palumbor150Fabio

Palumbo

CNR Researcher

Antonella MilellaAntonella

Milella

Associate Researcher

Pietro-FaviaPietro

Favia

Associate Professor

Fiorenza_FanelliFiorenza

Fanelli

CNR Researcher

Francesco FracassiFrancesco

Fracassi

Associate Professor

Eloisa_SardellaEloisa

Sardella

CNR Researcher

Publications

  1. Fanelli, F , Mastrangelo, A.M, Fracassi, F., Aerosol-assisted atmospheric cold plasma deposition and characterization of superhydrophobic organic-inorganic nanocomposite thin films,  Langmuir Volume 30, Issue 3, 28 January 2014, Pages 857-865, Doi: 10.1021/la404755n
  2. Rosa Di Mundo, Riccardo d’Agostino, and Fabio Palumbo, Long-Lasting Antifog Plasma Modification of Transparent Plastics,  ACS Appl. Mater. Interfaces, 2014, 6 (19), pp 17059–17066 DOI: 10.1021/am504668s
  3. Ilaria Trizio, Eloisa Sardella, Edda Francioso, Giorgio Dilecce, Vito Rizzi, Pinalysa Cosma, Michael Schmidtd, Mareike Hänsch, Thomas von Woedtke, Pietro Favia, Roberto Gristina, Investigation of air-DBD effects on biological liquids for in vitro studies on eukaryotic cells, Clinical Plasma Medicine, Volume 3, Issue 2, December 2015, Pages 62–71, DOI: 10.1016/j.cpme.2015.09.003

Latest News

Loretta del Mercato, si aggiudica l'ERC STARTING GRANT 2017

Loretta del Mercato, si aggiudica  l'ERC STARTING GRANT 2017

uno dei bandi più competitivi a livello europeo.

Lecce, 6 settembre 2017 

Lo European Research Council, che promuove la ricerca di eccellenza in Europa, nei giorni scorsi ha reso noti i nomi dei 406 vincitori della selezione ERC STARTING GRANT 2017, il bando tra i più competitivi a livello internazionale.

Su 3085 progetti presentati, 406 i progetti selezionati a cui sono stati destinati i 605 i milioni di euro di investimento. 48 le nazioni di provenienza dei ricercatori, soltanto 17 gli Italiani che condurranno le loro ricerche nel nostro paese, tra cui Loretta del Mercato, ricercatrice dell'Istituto di Nanotecnologia del Consiglio Nazionale delle Ricerche di Lecce.

Un importante riconoscimento alla ricerca nel settore della medicina di precisione condotta presso il CNR NANOTEC, un indiscusso premio al talento della giovane ricercatrice che, a 38 anni e un contratto a tempo determinato, sarà a capo del progetto "Sensing cell-cell interaction heterogeneity in 3D tumor models: towards precision medicine – INTERCELLMED".

Il progetto, il cui obiettivo è affrontare uno dei problemi più spinosi della ricerca sul cancro, ovvero la difficoltà nel trasformare i risultati delle ricerche scientifiche in applicazioni cliniche per i pazienti e che vedrà coinvolto l'Istituto tumori "Giovanni Paolo II" di Bari, si propone di sviluppare nuovi modelli in vitro 3D di tumore del pancreas, alternativi ai modelli animali, ingegnerizzati con un set di sensori nanotecnologici che consentiranno di monitorare le interazioni delle cellule tumorali con il loro micorambiente, verificare l'appropriatezza delle terapie prima della somministrazione ai pazienti oncologici e quindi prevedere la risposta dei singoli pazienti ad una o più terapie antitumorali.

La realizzazione di queste piattaforme 3D multifunzionali consentirà di superare le evidenti differenze intercorrenti tra "modelli animali" ed esseri umani fornendo dati attendibili ed in tempi più rapidi rispetto ai dati ottenuti tramite lunghi e costosi procedimenti di sperimentazione sugli animali. Le tecnologie e i modelli sviluppati saranno estesi anche ad altre forme di tumori solidi nonché impiegati per studi nell'ambito della ingegneria tissutale e della medicina rigenerativa.

Rassegna stampa e Video

Zeiss Microscopy Technology and Complete Correlative Workflow

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Zeiss Microscopy Technology and Complete Correlative Workflow

Lecce, Italy, 2017 Wednesday July 19th 

CNR NANOTEC @ Lecce, Aula Seminari – pal. G, Piano Terra

Program - PDF

Zeiss, as microscopy technology leader, provides the unique complete imaging solution ranging from light, confocal, electron, ion and Xray modalities with a complete and straightforward correlative workflow. An overview of different technologies will be presented with a special focus on X-Rray microscopy.

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MCS 2017

International Workshop on Micropropulsion and CubeSats

Bari, Italy, 26 - 27 June 2017

Program - MSC2017

This narrow-field, invited-only meeting is the first attempt to bring together the Materials and Micropropulsion communities with a view to contribute to the development of the Global Materials and Micropropulsion Roadmap, and set such meetings to a regular basis.