Sub-Picomolar Protein Detection with Field-Effect Transistors (2009)
Estrela, Pedro, Paul, D., Migliorato, P., Ko Ferrigno, P., Wang, L., Huq, E.
Sub-picomolar protein detection with field-effect transistors (2009)
Paul, D., Estrela, Pedro, Migliorato, P., Ko Ferrigno, P., Wang, L., Huq, E.
Fabrication of BioFET Linear Array for Protein Interaction Detection (2009)
Wang, L., Huq, E., Estrela, Pedro, Migliorato, P., Thomas, S., Li, P., ...
Keighley, SD, Estrela, Pedro, Li, P, Migliorato, P
DNA biosensors, especially those based upon detection of the intrinsic negative charge of target DNA, can be greatly improved by the use of uncharged peptide nucleic acid (PNA) probes. Hybridization...
Potentiometric detection of protein interactions with peptide aptamers (2008)
Estrela, Pedro, Paul, D., Migliorato, P., Ko Ferrigno, P., Wang, L., Huq, E.
Label-free electrical detection of protein interactions has been achieved by direct measurement of variations in open circuit potential using an accurate differential voltage measurement as well as...
Label-Free Potentiometric Detection of Protein Interactions with Peptide Aptamers (2008)
Estrela, Pedro, Paul, D., Migliorato, P., Ko Ferrigno, P., Wang, L., Huq, E.
Kukol, A., Li, P., Estrela, Pedro, Ko-Ferrigno, P., Migliorato, P.
Microarrays based on DNA-DNA hybridization are potentially useful for detecting and subtyping viruses but require fluorescence labeling and imaging equipment. We investigated a label-free electrical...
Keighley, S. D., Li, P., Estrela, Pedro, Mighorato, P.
The ability to immobilize DNA probes onto gold substrates at an optimum surface density is key in the development of a wide range of DNA biosensors. We present a method to accurately control probe...
Self-assembled nanotube field-effect transistors for label-free protein biosensors (2008)
Hu, P., Fasoli, A., Park, J., Choi, Y., Estrela, Pedro, Maeng, S. L., ...
A self-assembly method is developed to fabricate single-wall carbon nanotube field-effect transistors (SWNT-FETs). The electrode surface and the area between electrodes are modified with nonpolar...
Estrela, Pedro, Paul, D., Li, P., Keighley, S. D., Migliorato, P., Laurenson, S., ...
Label-free electrical detection of protein interactions has been achieved by direct measurement of variations in open circuit potential (OCP) using an accurate differential voltage measurement. Our...
Application of thin film transistors to label-free electrical biosensors (2008)
Estrela, Pedro, Keighley, S. D., Li, P., Migliorato, P.
Biotechnology is in great need of low-cost intelligent biochips for massive parallel detection of biomolecular interactions, using portable instrumentation. One way this may be achieved is to exploit...
Label-Free Electrical Detection of Protein Interactions with Peptide Aptamers (2008)
Estrela, Pedro, Paul, D., Laurenson, S., Ko Ferrigno, P., Migliorato, P.
Chemical and biological sensors using polycrystalline silicon TFTs (2007)
Estrela, Pedro, Migliorato, P.
Over the past three decades effort has been devoted to exploit the field-effect mechanism in chemical and biological sensors, due to the potential of these devices to provide large arrays of sensors...
Hu, P., Fasoli, A., Park, J., Choi, Y., Estrela, Pedro, Migliorato, P., ...
Pedro Estrela, Piero Migliorato
Over the past three decades effort has been devoted to exploit the field-effect mechanism in chemical and biological sensors, due to the potential of these devices to provide large arrays of sensors...
Biologically sensitive field effect devices using polysilicon TFTs (2006)
Estrela, Pedro, Stewart, A. G., Keighley, S. D., Migliorato, P.
This paper presents a review of recent developments in the detection of biomolecular interactions with field-effect devices. Ion-sensitive field-effect transistors (ISFETs) and enzyme field-effect...
TFT arrays for biosensing applications (2005)
Estrela, Pedro, Stewart, A. G., Keighley, S. D., Yan, F, Migliorato, P
Biotechnology is in great need of low-cost intelligent biochips for massive parallel detection of biomolecular interactions, using portable instrumentation. One way this may be achieved is to exploit...
Polycrystalline Silicon ISFETs on Glass Substrate (2005)
Feng Yan, Pedro Estrela, Yang Mo, Piero Migliorato, Hiroshi Maeda
The Ion Sensitive Field Effect Transistor (ISFET) operation based onpolycrystalline silicon thin film transistors is reported. These devices can be fabricated oninexpensive disposable substrates such...
Polycrystalline silicon ion sensitive field effect transistors (2005)
Yan, F., Estrela, Pedro, Mo, Y., Migliorato, P., Maeda, H., Inoue, S., ...
We report the operation of polycrystalline silicon ion sensitive field effect transistors. These devices can be fabricated on inexpensive disposable substrates such as glass or plastics and are,...
Field effect detection of biomolecular interactions (2005)
Estrela, Pedro, Stewart, A. G., Yan, F., Migliorato, P.
We report the detection of biomolecular interactions using field effect devices such as metal-oxide-semiconductor (MOS) capacitor structures and polycrystalline silicon thin film transistors (Poly-Si...
Electrical detection of biomolecular interactions with metal-insulator- semiconductor diodes (2005)
Estrela, Pedro, Migliorato, P., Takiguchi, H., Fukushima, H., Nebashi, S.
We report the label-free detection of DNA hybridization using a metal-insulator-semiconductor (MIS) diode or capacitor. Upon immobilization of single-stranded DNA on the gold gate of a MIS capacitor,...
Biologically Sensitive Field Effect Devices (2005)
Estrela, Pedro, Keighley, S.D., Stewart, A.G., Migliorato, P.
Field-Effect Sensing of Protein Interactions (2005)
Estrela, Pedro, Laurenson, S., Ko Ferrigno, P., Migliorato, P.
Label-free detection of DNA hybridization with Au/SiO2/Si diodes and poly-Si TFTs (2004)
Estrela, Pedro, Stewart, A.G., Migliorato, P., Maeda, H.
Label-free electrical detection of DNA hybridization has been achieved by employing Au/SiO2/Si MOS diodes and Poly-Si TFTs. The detection is based on the modulation of the gate voltage associated...
Thermal expansion of CeCU6-xAux (2004)
Estrela, Pedro, De Visser, A., Stockert, O., Grube, K., Von Lohneysen, H.
CeCu6-xAux orders antiferromagnetically for x > 0.1. The ordering wave vector changes drastically between x = 0.4 and 0.5, while the Neel temperature T-N(x) varies linearly between x = 0.1 and 1.0....
Label-Free Electrical Detection of DNA using Metal-Insulator-Semiconductor Structures (2004)
Estrela, Pedro, Migliorato, P., Takiguchi, H., Fukushima, H., Nebashi, S.
Electric-Field Detection of DNA Hybridisation (2004)
Stewart, A.G., Estrela, Pedro, Migliorato, P., Takiguchi, H., Fukushima, H.
High pressure transport study of non-Fermi liquid behaviour in U2Pt2In and U3Ni3Sn4 (2002)
De Visser, A., Estrela, Pedro, Naka, T.
The strongly correlated metals U2Pt2In and U3Ni3Sn4 show pronounced non-Fermi liquid (NFL) phenomena at ambient pressure. Here we review single-crystal electrical resistivity measurements under...
Pressure-induced recovery of the Fermi-liquid state in the non-Fermi liquid material U2Pt2In (2002)
Estrela, Pedro, De Visser, A., Naka, T., De Boer, F. R., Pereira, L. C. J.
In the study of non-Fermi-liquid (NFL) phenomena in correlated metals, U2Pt2In is of special interest as it is one of the rare stoichiometric (undoped) materials that show NFL behaviour at ambient...
High-pressure study of the non-Fermi liquid material U2Pt2In (2001)
Estrela, Pedro, De Visser, A., Naka, T., De Boer, F. R., Pereira, L. C. J.
The effect Of hydrostatic pressure. (p less than or equal to 1.8 GPa) on the non-Fermi liquid statu Of U2Pt2In is investigated by electrical resistivity measurements in the temperature interval...
Recovery of the Fermi-liquid state in U3Ni3Sn4 by pressure (2001)
Estrela, Pedro, De Visser, A., De Boer, F. R., Naka, T., Shlyk, L.
Measurements of the resistivity of single-crystalline U3Ni3Sn4 under hydrostatic pressure up to 1.8 GPa are reported. We show that the temperature Tn, below which the resistivity obeys the...
Muon Localization Site in U(Pt,Pd)3 (2000)
Schenck, A, Keizer, RJ, De Visser, A, Amato, A, Andreica, A, Gygax, FN, ...
Crystal structure and physical properties of U3T3Sn4 (T = Ni, Cu) single crystals (2000)
Shlyk, L., Estrela, Pedro, Waerenborgh, J. C., De Long, L. E., De Visser, A., Rojas, D. P., ...
Heat capacity experiments, crystal structure determination and transmission electron microscopy have been carried out on U3Cu3Sn4 singlecrystals. U3Cu3Sn4 was confirmed to be a heavy-fermion...
Muon localization site in U(Pt,Pd)(3) (2000)
Schenck, A., Keizer, R. J., De Visser, A., Amato, A., Andreica, D., Gygax, F. N., ...
The angular and temperature (10-250 K) variation of the Knight shift of single-crystalline U(Pt0.95Pd0.05)(3) has been measured in transverse-field (B = 0.6T) mu SR experiments. By analyzing the...
Possible non-Fermi-liquid behaviour in URh1/3Ni2/3Al (2000)
Prokes, K., Hagmusa, I. H., Estrela, Pedro, Klaasse, J. C. P., Andreev, A. V., Sechovsky, V., ...
The quasiternary intermetallic compound URh1/3Ni2/3Al crystallizes in the hexagonal ZrNiAl-type of structure, like the parent compounds URhAl (ferromagnet, TC = 27 K) and UNiAl (antiferromagnet, TN =...
Resistivity of non-Fermi liquid U2Pt2In under pressure (2000)
Estrela, Pedro, Naka, T., De Visser, A., De Boer, F. R., Pereira, L. C. J., Almeida, M.
Non-Fermi liquid behaviour in single-crystalline U2Pt2In has been studied by means of resistivity experiments (I parallel c) under hydrostatic pressure (P<1.5 GPa). At ambient pressure the...
Magnetic quantum critical point and superconductivity in UPt3 doped with Pd (2000)
De Visser, A., Graf, M. J., Estrela, Pedro, Amato, A., Baines, C., Andreica, D., ...
Transverse-field muon spin relaxation measurements have been carried out on the heavy-fermion superconductor UPt3 doped with small amounts of Pd. We find that the critical Pd concentration for the...
Non-Fermi-Liquid Behaviour in U2Pt2In (1999)
Estrela, Pedro, De Visser, A, De Boer, FR, Nieuwenhuys, GJ, Pereira, LCJ, Almeida, M
Non-Fermi-liquid behaviour of U3-xNi3Sn4-y single crystals (1999)
Shlyk, L., Waerenborgh, J. C., Estrela, Pedro, De Long, L. E., De Visser, A., Almeida, M.
U3Ni3Sn4 and U2.9Ni3.0Sn3.9 single crystals exhibit a non-Fermi-liquid susceptibility chi proportional to T-0.3 between 1.7 and 10 K. The electronic heat capacity coefficient gamma(T) of...
Magnetic and transport properties of U2Pt2In single crystals (1999)
Pereira, L. C. J., Almeida, M., Estrela, Pedro, Godinho, M., Rebizant, J., Spirlet, J. C., ...
Magnetic and transport measurements are reported on U2Pt2 single crystals that crystallize in the tetragonal Zr3Al2-type structure. Magnetization shows enhanced Pauli paramagnetism, reaching a broad...
Magnetization density distribution in U2Co2Sn (1999)
Paixao, J. A., Pereira, L. C. J., Estrela, Pedro, Godinho, M, Almeida, M, Paolasini, L, ...
A magnetization density study by means of polarized-neutron scattering on the intermetallic compound UzCo2Sn is reported. U2Co2Sn belongs to the large An(2)T(2)X (An = U, Np, Pu, Am; T = transition...
Non-Fermi Liquid Behavior and Griffiths Phase in U3-xNi3Sn4-y Single Crystals (1999)
Shlyk, L., De Long, L.E., Waerenborgh, J.C., Almeida, M., Estrela, Pedro, De Visser, A.
Non-Fermi Liquid Behavior in U3-xNi3Sn4-y Single Crystals (1999)
Shlyk, L., Waerenborgh, J.C., Estrela, Pedro, De Long, L.E., De Visser, A., Almeida, M.
Crystallographic and magnetic properties of UFe5.8Al6.2 single crystals (1998)
Goncalves, A. P., Estrela, Pedro, Waerenborgh, J. C., Paixao, J. A., Bonnet, M., Spirlet, J. C., ...
Single crystals of UFe5.8Al6.2 were characterised by X-ray and neutron diffraction, Fe-57 Mossbauer spectroscopy and magnetisation. The structure refinement by X-ray and neutron diffraction shows a...
Structural, magnetic and transport properties of single-crystalline U2Pt2In (1998)
Estrela, Pedro, Pereira, L. C. J., De Visser, A., De Boer, F. R., Almeida, M., Godinho, M., ...
Single crystals of the heavy-electron compound U2Pt2In have been grown by a modified mineralization technique. The x-ray structure refinement shows that U2Pt2In single crystals form in the Zr3Al2...
Single crystal magnetisation of UFe10Mo2 (1997)
Estrela, Pedro, Goncalves, A. P., Godinho, M., Almeida, M., Spirlet, J. C.
Magnetisation measurements have been performed for different directions on aligned UFe10Mo2 single crystals. The results confirm a basal plane anisotropy and suggest an important magnetic...
Pereira, L. C. J., Paixao, J. A., Estrela, Pedro, Godinho, M., Boudarot, F., Bonnet, M., ...
U2Rh2Sn is a member of a large family of intermetallic compounds with the tetragonal U3Si2 crystal structure. It orders antiferromagnetically at 28 K with the propagation vector k = (0, 0, 1/2). We...
Anomalous magnetization process in UFe4Al8 probed by magnetization and magnetoresistance (1996)
Godinho, M., Estrela, Pedro, Goncalves, A. P., Almeida, M., Spirlet, J. C., Bonfait, G.
A strong anisotropic magnetoresistance has been measured in a single crystal of UFe4Al8 and has been used to prove the ferromagnetic order of the U lattice. The giant anomaly detected in the...
DeCampos, J. A., Gil, J. M., Mendes, P. J., Ferreira, L. P., Ferreira, . C., DeCampos, N. A., ...
A series of RFe(12-x)M(x)-type alloys were stabilised with M = Mo and x = 2.5 for R = Y, Nd, Dy and Er. Magnetisation, ac susceptibility measurements and mu (+)SR spectroscopy results are in good...
Giant-magnetoresistance anomaly associated with a magnetization process in UFe4Al8 (1996)
Bonfait, G., Godinho, M., Estrela, Pedro, Goncalves, A. P., Almeida, M., Spirlet, J. C.
Magnetoresistance and magnetization measurements on a UFe4Al8 single crystal are reported. A strong anisotropic magnetoresistance is found in this compound and is used to prove the ferromagnetic...
Structural and physical properties of UFe10Mo2 (1995)
Goncalves, A. P., Estrela, Pedro, Waerenborgh, J. C., Godinho, M., Almeida, M., Spirlet, J. C.
UFe10Mo2 was obtained as single-phase polycrystalline material by annealing at 1450 K a polyphasic sample prepared by melting the elements. This compound was characterized by single-crystal X-ray...
Structural and magnetic properties of UFexM12-x (M = Al, Mo and Si) intermetallic compounds (1995)
Goncalves, A. P., Bonfait, G., Almeida, M., Estrela, Pedro, Godinho, M., Spirlet, J. C.
The U-Fe-M, M = Al, Mo and Si, phase diagrams around UFexM12-x compositions were investigated in order to find congruent melting compounds with ThMn12-type structure. This structure was confirmed in...
Magnetic Properties of UFe10Si2 Single Crystal (1995)
Estrela, Pedro, Godinho, M., Goncalves, A. P., Almeida, M., Spirlet, J. C.
UFe10Si2 single crystals with ThMn12-type structure were studied by X-ray diffraction and magnetisation measurements. A uniaxial anisotropy, a saturation magnetisation of 19.5 mu(B) f.u.(-1) and a...