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Showing 1 to 12 of 236 entries
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The spontaneous formation of single-molecule junctions via terminal alkynes.

Nanotechnology

Pla-Vilanova P, Aragonès AC, Ciampi S, Sanz F, Darwish N, Diez-Perez I.
PMID: 26314486
Nanotechnology. 2015 Sep 25;26(38):381001. doi: 10.1088/0957-4484/26/38/381001. Epub 2015 Aug 28.

Herein, we report the spontaneous formation of single-molecule junctions via terminal alkyne contact groups. Self-assembled monolayers that form spontaneously from diluted solutions of 1, 4-diethynylbenzene (DEB) were used to build single-molecule contacts and assessed using the scanning tunneling microscopy-break...

TEMPO Monolayers on Si(100) Electrodes: Electrostatic Effects by the Electrolyte and Semiconductor Space-Charge on the Electroactivity of a Persistent Radical.

Journal of the American Chemical Society

Zhang L, Vogel YB, Noble BB, Gonçales VR, Darwish N, Brun AL, Gooding JJ, Wallace GG, Coote ML, Ciampi S.
PMID: 27373457
J Am Chem Soc. 2016 Aug 03;138(30):9611-9. doi: 10.1021/jacs.6b04788. Epub 2016 Jul 19.

This work demonstrates the effect of electrostatic interactions on the electroactivity of a persistent organic free radical. This was achieved by chemisorption of molecules of 4-azido-2,2,6,6-tetramethyl-1-piperdinyloxy (4-azido-TEMPO) onto monolayer-modified Si(100) electrodes using a two-step chemical procedure to preserve the...

Phononic Crystal Waveguide Transducers for Nonlinear Elastic Wave Sensing.

Scientific reports

Ciampa F, Mankar A, Marini A.
PMID: 29116118
Sci Rep. 2017 Nov 07;7(1):14712. doi: 10.1038/s41598-017-14594-4.

Second harmonic generation is one of the most sensitive and reliable nonlinear elastic signatures for micro-damage assessment. However, its detection requires powerful amplification systems generating fictitious harmonics that are difficult to discern from pure nonlinear elastic effects. Current state-of-the-art...

Nonlinear elastic wave tomography for the imaging of corrosion damage.

Ultrasonics

Ciampa F, Scarselli G, Pickering S, Meo M.
PMID: 26044196
Ultrasonics. 2015 Sep;62:147-55. doi: 10.1016/j.ultras.2015.05.011. Epub 2015 May 23.

This paper presents a nonlinear elastic wave tomography method, based on ultrasonic guided waves, for the image of nonlinear signatures in the dynamic response of a damaged isotropic structure. The proposed technique relies on a combination of high order...

Ion microscopy based on laser-cooled cesium atoms.

Ultramicroscopy

Viteau M, Reveillard M, Kime L, Rasser B, Sudraud P, Bruneau Y, Khalili G, Pillet P, Comparat D, Guerri I, Fioretti A, Ciampini D, Allegrini M, Fuso F.
PMID: 26876642
Ultramicroscopy. 2016 May;164:70-7. doi: 10.1016/j.ultramic.2015.12.007. Epub 2016 Feb 11.

We demonstrate a prototype of a Focused Ion Beam machine based on the ionization of a laser-cooled cesium beam and adapted for imaging and modifying different surfaces in the few-tens nanometer range. Efficient atomic ionization is obtained by laser...

Multidimensional imaging using combined stray field and pulsed gradients.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Godward J, Ciampi E, Cifelli M, McDonald PJ.
PMID: 11945037
J Magn Reson. 2002 Mar;155(1):92-9. doi: 10.1006/jmre.2001.2493.

The paper describes an advance in stray field imaging (STRAFI) whereby images of planar samples can be obtained in the stray field of a superconducting magnet without the need for sample rotation. This is achieved by using the static...

Effects of hypoxia and transferrin on toxicity and DNA binding of ruthenium antitumor agents in hela cells.

Metal-based drugs

Frasca D, Ciampa J, Emerson J, Umans RS, Clarke MJ.
PMID: 18475755
Met Based Drugs. 1996;3(4):197-209. doi: 10.1155/MBD.1996.197.

Nuclear DNA binding and inhibition of growth of HeLa cells in culture were determined after 24 h incubation with the ruthenium anticancer agents cis-[Cl(2)(NH(3))(4)Ru]Cl (CCR) and (ImH)trans-[(Im)(2)Cl(4)Ru] (ICR) as a function of [Ru], Po(2), and added transferrin. Consistent with...

Observation of photon-assisted tunneling in optical lattices.

Physical review letters

Sias C, Lignier H, Singh YP, Zenesini A, Ciampini D, Morsch O, Arimondo E.
PMID: 18352245
Phys Rev Lett. 2008 Feb 01;100(4):040404. doi: 10.1103/PhysRevLett.100.040404. Epub 2008 Feb 01.

We have observed tunneling suppression and photon-assisted tunneling of Bose-Einstein condensates in an optical lattice subjected to a constant force plus a sinusoidal shaking. For a sufficiently large constant force, the ground energy levels of the lattice are shifted...

Distinctively variable sequence-based nuclear DNA markers for multilocus phylogeography of the soybean- and rice-infecting fungal pathogen Rhizoctonia solani AG-1 IA.

Genetics and molecular biology

Ciampi MB, Gale LR, de Macedo Lemos EG, Ceresini PC.
PMID: 21637462
Genet Mol Biol. 2009 Oct;32(4):840-6. doi: 10.1590/S1415-47572009005000063. Epub 2009 Dec 01.

A series of multilocus sequence-based nuclear DNA markers was developed to infer the phylogeographical history of the Basidiomycetous fungal pathogen Rhizoctonia solani AG-1 IA infecting rice and soybean worldwide. The strategy was based on sequencing of cloned genomic DNA...

Time-resolved measurement of Landau-Zener tunneling in periodic potentials.

Physical review letters

Zenesini A, Lignier H, Tayebirad G, Radogostowicz J, Ciampini D, Mannella R, Wimberger S, Morsch O, Arimondo E.
PMID: 19792769
Phys Rev Lett. 2009 Aug 28;103(9):090402. doi: 10.1103/physrevlett.103.090403. Epub 2009 Aug 26.

We report time-resolved measurements of Landau-Zener tunneling of Bose-Einstein condensates in accelerated optical lattices, clearly resolving the steplike time dependence of the band populations. Using different experimental protocols we were able to measure the tunneling probability both in the...

Coherent control of dressed matter waves.

Physical review letters

Zenesini A, Lignier H, Ciampini D, Morsch O, Arimondo E.
PMID: 19392094
Phys Rev Lett. 2009 Mar 13;102(10):100403. doi: 10.1103/PhysRevLett.102.100403. Epub 2009 Mar 13.

We demonstrate experimentally that matter waves can be coherently and adiabatically loaded and controlled in one-, two-, and three-dimensional strongly driven optical lattices. This coherent control is then used in order to reversibly induce the superfluid-Mott insulator phase transition...

Wet chemical routes to the assembly of organic monolayers on silicon surfaces via the formation of Si-C bonds: surface preparation, passivation and functionalization.

Chemical Society reviews

Ciampi S, Harper JB, Gooding JJ.
PMID: 20393648
Chem Soc Rev. 2010 Jun;39(6):2158-83. doi: 10.1039/b923890p. Epub 2010 Apr 14.

Organic functionalization of non-oxidized silicon surfaces, while allowing for robust chemical passivation of the inorganic substrate, is intended and expected to broaden the chemical, physical and electronic properties of the currently most relevant technological material. Numerous protocols are now...

Showing 1 to 12 of 236 entries