http://publicationslist.org/data/giuseppe.firpo/atom.xml Giuseppe Firpohttp://publicationslist.org/giuseppe.firpo$basepathfavicon.icoRecent additions to Giuseppe Firpo's PublicationsList.org pagehttp://publicationslist.org/publications.png2012-12-03T16:29:59Z http://publicationslist.org/giuseppe.firpo/refid20 2012-02-10T12:54:19Z

In modern biomaterial design the generation of an environment mimicking some of the extracellular matrix features is envisaged to support molecular cross-talk between cells and scaffolds during tissue formation/ remodeling. In bone substitutes chemical biomimesis has been particularly exploited; conversely, the relevance of pre-determined scaffold architecture for regenerated bone outputs is st...<br/><br/>Silvia Scaglione, Paolo Giannoni, Paolo Bianchini, Monica Sandri, Roberto Marotta, Giuseppe Firpo, Ugo Valbusa, Anna Tampieri, Alberto Diaspro, Paolo Bianco, Rodolfo Quarto (2012) <i>Scientific Reports</i> 2: <br/>

http://publicationslist.org/giuseppe.firpo/refid21 2012-10-29T12:07:32Z

We demonstrate the possibility of using a simple functionalization procedure, based on an initial vapour-phase silanization, to control the size and functionality of solid state nanopores. The presented results show that, by varying the silanization time, it is possible to modify the efficiency of probe molecule attachment, thus shrinking the pore to the chosen size, while introducing a specific s...<br/><br/>Valentina Mussi, Paola Fanzio, Giuseppe Firpo, Luca Repetto, Ugo Valbusa (2012) <i>Nanotechnology</i> <i></i> <i></i> 23: 43 <br/>

http://publicationslist.org/giuseppe.firpo/refid22 2012-10-29T12:13:55Z

Luca Repetto, Barbara Šetina Batič, Giuseppe Firpo, Emanuele Piano, Ugo Valbusa (2012) <i>APPLIED PHYSICS LETTERS</i> 100: 223113<br/>

http://publicationslist.org/giuseppe.firpo/refid24 2012-12-03T16:27:52Z

Chiara Manneschi, Paola Fanzio, Elena Angeli, Giuseppe Firpo, Luca Ceseracciu, Valentina Mussi, Luca Repetto, Ugo Valbusa (2012) <i>MICROFLUIDICS AND NANOFLUIDICS</i> : <br/>

http://publicationslist.org/giuseppe.firpo/refid23 2012-11-12T08:47:43Z

Paola Fanzio, Chiara Manneschi, Elena Angeli, Valentina Mussi, Giuseppe Firpo, Luca Ceseracciu, Luca Repetto & Ugo Valbusa (2012) <i>Scientific Reports</i> 2: 791 <br/>

http://publicationslist.org/giuseppe.firpo/refid25 2012-12-03T16:29:49Z

V. Mussi, P. Fanzio, L. Repetto, G. Firpo, S. Stigliani, G.P. Tonini, U. Valbusa (2011) <i>BIOSENSORS & BIOELECTRONICS, vol. 29, p. 125-131, ISSN: 0956-5663</i> : <br/>

http://publicationslist.org/giuseppe.firpo/refid18 2011-09-20T07:44:33Z

We present the development and the electrical characterization of a polymeric nanochannel device. Standard microfabrication coupled to Focused Ion Beam (FIB) nanofabrication is used to fabricate a silicon master, which can be then replicated in a polymeric material by soft lithography. Such an elastomeric nanochannel device is used to study DNA translocation events during electrophoresis experimen...<br/><br/>Paola Fanzio, Valentina Mussi, Chiara Manneschi, Elena Angeli, Giuseppe Firpo, Luca Repetto, Ugo Valbusa (2011) <i>LAB ON A CHIP</i> <i></i> <i></i> 11: 17 2961-2966<br/>

http://publicationslist.org/giuseppe.firpo/refid19 2011-09-20T07:45:21Z

A Focused Ion Beam (FIB)-patterned silicon mould is used to fabricate elastomeric nanostructures, whose cross-section can be dynamically and reversibly tuned by applying a controlled mechanical stress. Direct-write, based on FIB milling, allows the fabrication of nanostructures with a variety of different geometries, aspect ratio, spacing and distribution offering a higher flexibility compared to ...<br/><br/>Elena Angeli, Chiara Manneschi, Luca Repetto, Giuseppe Firpo, Ugo Valbusa (2011) <i>LAB ON A CHIP</i> <i></i> <i></i> 11: 15 2625-2629<br/>

http://publicationslist.org/giuseppe.firpo/refid10 2010-07-02T07:29:25Z

The possible use of nanopores for single DNA molecules biosensing has been demonstrated, but much remains to do in order to develop advanced engineered devices with enhanced stability, and controlled geometry and surface properties. Here we present morphological and electrical characterization of solid state silicon nitride nanopores fabricated by focused ion beam direct milling and chemically fun...<br/><br/>V Mussi, P Fanzio, L Repetto, G Firpo, P Scaruffi, S Stigliani, G P Tonini, U Valbusa (2010) <i>NANOTECHNOLOGY</i> <i></i> <i></i> 21: 14 <br/>

http://publicationslist.org/giuseppe.firpo/refid16 2010-11-02T08:37:34Z

We present data concerning the electrical properties of a class of biosensor devices based on bio-functionalized solid state nanopores able to detect different kinds of interactions between probe molecules, chemically attached to the pore surface, and target molecules present in solution and electrophoretically drawn through the nanometric channel. The great potentiality of this approach resides i...<br/><br/>V Mussi, P Fanzio, L Repetto, G Firpo, P Scaruffi, S Stigliani, M Menotta, M Magnani, G P Tonini, U Valbusa (2010) <i>Journal of Physics : Condensed Matter</i> <i></i> <i>http://stacks.iop.org/0953-8984/22/i=45/a=454104</i> 22: 45 <br/>

http://publicationslist.org/giuseppe.firpo/refid13 2010-07-02T07:29:25Z

The leak devices most frequently used to calibrate leak-detection instruments are permeation leaks. These devices are very sensitive to temperature and can only be used with helium. The physical-leak types that could overcome this limits are prone to clog and their minimum size (about 1 mu m) limits their applicability in the lowest flow range. Here, the authors propose a fabrication technique by ...<br/><br/>G Firpo, L Repetto, F B de Mongeot, U Valbusa (2009) <i>JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B</i> <i></i> <i></i> 27: 6 2347-2350<br/>

http://publicationslist.org/giuseppe.firpo/refid12 2010-07-02T07:29:25Z

A quantitative surface reconstruction technique has been developed for the geometric characterization of three-dimensional structures by using a combined focused ion beam-scanning electron microscopy (FIB-SEM) instrument. A regular pattern of lines is milled at normal incidence on the sample to be characterized and an image is acquired at a large tilt angle. By analyzing the pattern under the tilt...<br/><br/>L Repetto, R Buzio, C Denurchis, G Firpo, E Piano, U Valbusa (2009) <i>ULTRAMICROSCOPY</i> <i></i> <i></i> 109: 11 1338-1342<br/>

http://publicationslist.org/giuseppe.firpo/refid11 2010-07-02T07:29:25Z

Recently, nanopore technology has been introduced for genome analysis. Here we show results related to the possibility of preparing "engineered solid state nanopores". The nanopores were fabricated on a suspended Si3N4 membrane by Focused Ion Beam (FIB) drilling and chemically functionalized in order to covalently bind oligonucleoticles (probes) on their surface. Our data show the stable effect of...<br/><br/>V Mussi, P Fanzio, L Repetto, G Firpo, U Valbusa, P Scaruffi, S Stigliani, G P Tonini (2009) <i>SUPERLATTICES AND MICROSTRUCTURES</i> <i></i> <i></i> 46: 1-2 59-63<br/>

http://publicationslist.org/giuseppe.firpo/refid15 2010-07-02T07:29:25Z

The focused ion beam (FIB) microscope is a tool that has a Widespread use in the field of material science because it is able to micromachining with high resolution imaging thus therefore enhancing it broad range of both fundamental and technological applications in material science. The FIB is based oil a beam of Ga ions Which sputter the sample enabling precise machining at the nanometer/microme...<br/><br/>L Repetto, G Firpo, U Valbusa (2008) <i>MATERIALI IN TEHNOLOGIJE</i> <i></i> <i></i> 42: 4 143-149<br/>

http://publicationslist.org/giuseppe.firpo/refid14 2010-07-02T07:29:25Z

In recent years there has been a rapid increase in nanotechnology applications to medicine in order to prevent and treat diseases in the human body. The established and future applications have the potential to dramatically change medical science. The present paper will give a few examples that could transform common medical procedures.<br/><br/>E Angeli, R Buzio, G Firpo, R Magrassi, V Mussi, L Repetto, U Valbusa (2008) <i>TUMORI</i> <i></i> <i></i> 94: 2 206-215<br/>

http://publicationslist.org/giuseppe.firpo/refid6 2010-07-02T07:25:14Z

We demonstrate that a combination of ion sputtering and soft lithography is an alternative and effective way of nanostructuring soft matter. We create self-organized nanoscale structures on a glass template by irradiating the surface with a defocused, low energy Ar ion beam. Capillary force lithography is then used to transfer the pattern, exploiting the glass transition of polymeric layers. In pa...<br/><br/>E Mele, F Di Benedetto, R Cingolani, D Pisignano, A Toma, F B de Mongeot, R Buzio, C Boragno, G Firpo, V Mussi, U Valbusa (2005) <i>NANOTECHNOLOGY</i> <i></i> <i></i> 16: 11 2714-2717<br/>

http://publicationslist.org/giuseppe.firpo/refid5 2010-07-02T07:25:14Z

We have developed and tested a vacuum suitcase which allows to transport samples under ultrahigh vacuum (UHV) conditions. The suitcase is pumped by a new performant pumping system based on a getter pump, and it reaches an ultimate pressure lower than 3x10(-11) mbar, which is 2 orders of magnitude better than in the existing projects. Furthermore it has no need for a continuos power supply, no elec...<br/><br/>G Firpo, F B de Mongeot, C Boragno, U Valbusa (2005) <i>REVIEW OF SCIENTIFIC INSTRUMENTS</i> <i></i> <i></i> 76: 2 <br/>

http://publicationslist.org/giuseppe.firpo/refid7 2010-07-02T07:25:14Z

Metal surfaces can be easily nanopatterned via ion sputtering: mounds or ripples can be created depending on the surface symmetry and temperature. However, in many cases these structures are unstable at room temperature and above, due to the adatom fast diffusion. This fact prevents the use of such systems as substrate or nanostamps for a technological implementation. In this paper we present a sp...<br/><br/>A Molle, F B de Mongeot, F Granone, R Buzio, G Firpo, C Boragno, U Valbusa (2005) <i>NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS</i> <i></i> <i></i> 230: 555-559<br/>

http://publicationslist.org/giuseppe.firpo/refid8 2010-07-02T07:25:14Z

In this work we present our results concerning the formation of self-organized nanoscale structures during the bombardment with a low-energy defocused Ar ion beam. We studied glass surfaces because of their physical properties, technological interest and cheapness. The evolution of sample surface was studied ex situ by atomic force microscopy. We found, in agreement with Bradley and Harper, a morp...<br/><br/>A Toma, F B de Mongeot, R Buzio, G Firpo, S R Bhattacharyya, C Boragno, U Valbusa (2005) <i>NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS</i> <i></i> <i></i> 230: 551-554<br/>

http://publicationslist.org/giuseppe.firpo/refid9 2010-07-02T07:25:14Z

We have developed a new type of nonevaporable getter (NEG) pump. It is based on the getter strip St707, produced by SAES getters S.p.A, fitted into a CF-flanged container. The pump is activated at 400degreesC for 1 h and its pumping behavior is studied for H-2, CO, and N-2. The pumping speed is about 500 liters/s for H-2, 230 liters/ for CO, and 130 liters/s for N-2, which is in good agreement wit...<br/><br/>G Firpo, A Pozzo (2004) <i>REVIEW OF SCIENTIFIC INSTRUMENTS</i> <i></i> <i></i> 75: 11 4828-4832<br/>

http://publicationslist.org/giuseppe.firpo/refid3 2010-07-02T07:23:36Z

Commercial He mass spectrometer leak detectors usually do not provide sufficient sensitivity to perform accurate measurements of the permeation rate of He through glass. Ultrasensitive dedicated systems have adeguate sensitivity but involve high costs and complex procedures. However, both cryogenics and photomultiplier technology routinely demand this goal. Here, we propose a novel method to incre...<br/><br/>G Firpo, A Pozzo (2004) <i>JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A</i> <i></i> <i></i> 22: 2 328-331<br/>

http://publicationslist.org/giuseppe.firpo/refid17 2011-09-20T07:40:47Z

Valentina Mussi, Paola Fanzio, Luca Repetto, Giuseppe Firpo, Sara Stigliani, Gian Paolo Tonini, Ugo Valbusa () <i>Biosensors and Bioelectronics</i> <i></i> <i>http://www.sciencedirect.com/science/article/pii/S095656631100529X</i> : 0 <br/>