Strus, Mark, Lahiji, Roya R, Ares, Pablo, Lopez, Vicente, Raman, Arvind, Reifenberger, R.
The interplay between local mechanical strain energy and lateral frictional forces determines the shape of carbon nanotubes on substrates. In turn, because of its nanometer-size diameter, the shape...
Biedermann, Laura B, Bolen, Michael L, Capano, Michael A, Zemlyanov, Dmitry, Reifenberger, R.
Epitaxial carbon was grown by heating (000 (1) over bar) silicon carbide (SiC) to high temperatures (1450-1600 degrees C) in vacuum. A continuous graphene surface layer was formed at temperatures...
Theoretical basis of parametric-resonance-based atomic force microscopy (2009)
Prakash, G, Hu, S, Raman, Arvind, Reifenberger, R.
Parametric resonance underpins the physics of swings, resonant surface waves, and particle traps. There is increasing interest in its potential applications in atomic force microscopy (AFM). In this...
Xu, Xin, Melcher, John, Basak, Sudipta, Reifenberger, R., Raman, Arvind
Atomic Force microscope (AFM) cantilevers commonly used for imaging soft biological samples in liquids experience a momentary excitation of the higher eigenmodes at each tap. This transient response...
Flexural vibration spectra of carbon nanotubes measured using laser Doppler vibrometry (2009)
Biedermann, Laura, Tung, Ryan C, Raman, Arvind, Reifenberger, R.
Laser Doppler vibrometry is used to measure the thermal vibration spectra of individual multiwalled carbon nanotubes (MWNTs) under ambient conditions. Since the entire vibration spectrum is measured...
Determining the optimal contact length for a metal/multiwalled carbon nanotube interconnect (2008)
Lan, Chun, Zakharov, Dmitri, Reifenberger, R.
A focused ion beam (FIB) is used to sequentially reduce the contact length of an evaporated metal film to a multiwalled carbon nanotube (MWCNT). By using this FIB contact cutback technique, the...
Electrodeposition study of ODN : SWCNT hybrids on gold substrates (2008)
Lahiji, Roya R, Dolash, Bridget D, McDonald, Jennifer, Zemlyanov, Dmitry, Bergstrom, Donald E, Reifenberger, R.
Sonication of short single-stranded DNA (oligodeoxyribonucleotide; ODN) with Single-Walled Carbon Nanotubes (SWCNTs) greatly facilitates the dispersion of SWCNTs from entangled ropes in an aqueous...
Scanning probe microscopy study of exfoliated oxidized graphene sheets (2008)
Pandey, D, Reifenberger, R., Piner, R
Exfoliated oxidized graphene (OG) sheets, suspended in an aqueous solution, were deposited on freshly cleaved HOPG and studied by ambient AFM and UHV STM. The AFM images revealed oxidized graphene...
DNA-Associated Single-walled Carbon Nanotubes as a Platform for Drug Delivery (2008)
Hines, Bridget D, Lahiji, Roya R, Zemlyanov, Dmitry, Zakharov, Dmitri, Reifenberger, R., Bergstrom, Donald E
Poster from Birck Nanotechnology Center's 2008 Research Review
Lan, Chun, Srisungsitthisunti, Pornsak, Amama, Placidus B, Fisher, Timothy, Xu, Xianfan, Reifenberger, R.
A technique of measuring contact resistance between an individual nanotube and a deposited metallic film is described. Using laser ablation to sequentially shorten the contact length between a...
Top-gated graphene field-effect-transistors formed by decomposition of SiC (2008)
Wu, Y Q, Ye, P. D., Capano, Michael A, Xuan, Yi, Sui, Y, Qi, Minghao, ...
Top-gated, few-layer graphene field-effect transistors (FETs) fabricated on thermally decomposed semi-insulating 4H-SiC substrates are demonstrated. Physical vapor deposited SiO2 is used as the gate...
Lan, Chun, Srisungsitthisunti, Pornsak, Amama, Placidus B, Fisher, Timothy, Xu, Xianfan, Reifenberger, R.
A technique of measuring contact resistance between an individual nanotube and a deposited metallic film is described. Using laser ablation to sequentially shorten the contact length between a...
Lan, Chun, Srisungsitthisunti, Pornsak, Amama, Placidus B, Fisher, Timothy, Xu, Xianfan, Reifenberger, R.
A technique of measuring contact resistance between an individual nanotube and a deposited metallic film is described. Using laser ablation to sequentially shorten the contact length between a...
Top-gated graphene field-effect-transistors formed by decomposition of SiC (2008)
Wu, Y. Q., Ye, P. D., Capano, M. A., Xuan, Y., Sui, Y., Qi, M., ...
Top-gated, few-layer graphene field-effect transistors (FETs) fabricated on thermally decomposed semi-insulating 4H-SiC substrates are demonstrated. Physical vapor deposited SiO2 is used as the gate...
Electrodeposition study of ODN : SWCNT hybrids on gold substrates (2008)
Lahiji, R. R., Dolash, B. D., McDonald, J., Zemlyanov, D., Bergstrom, D. E., Reifenberger, R.
Sonication of short single-stranded DNA (oligodeoxyribonucleotide; ODN) with Single-Walled Carbon Nanotubes (SWCNTs) greatly facilitates the dispersion of SWCNTs from entangled ropes in an aqueous...
Scanning probe microscopy study of exfoliated oxidized graphene sheets (2008)
Pandey, D., Reifenberger, R., Piner, R.
Exfoliated oxidized graphene (OG) sheets, suspended in an aqueous solution, were deposited on freshly cleaved HOPG and studied by ambient AFM and UHV STM. The AFM images revealed oxidized graphene...
Elastometric sensing using higher flexural eigenmodes of microcantilevers (2007)
Spletzer, Matthew A, Raman, Arvind, Reifenberger, R.
We present a method to detect with high sensitivity the viscoelastic property changes of sensor coatings on microcantilever arrays due to radiation, analyte binding, or adsorption. The method uses...
Correlating electrical resistance to growth conditions for multiwalled carbon nanotubes (2007)
Lan, Chun, Amama, Placidus B, Fisher, Timothy, Reifenberger, R.
A correlation between growth temperature and electrical resistance of multiwalled carbon nanotubes MWNTs has been established by measuring the resistance of individual MWNTs grown by microwave...
Calibrating a tuning fork for use as a scanning probe microscope force sensor (2007)
Quartz tuning forks mounted with sharp tips provide an alternate method to silicon microcantilevers for probing the tip-substrate interaction in scanning probe microscopy. The high quality factor and...
Microcantilever mechanics in flowing viscous fluids (2007)
Jana, Anirban, Raman, Arvind, Dhayal, Babita, Tripp, Steven L, Reifenberger, R.
Microcantilevers are often deployed in flowing fluids to measure local flow velocities or to detect rapidly the nanomechanical binding of trace quantities of target analytes. The authors investigate...
Oligodeoxyribonucleotide Association with Single-Walled Carbon Nanotubes Studied by SPM (2007)
Lahiji, Roya R., Hines, Bridget D, Reifenberger, R., Bergstrom, Donald E
Studies have been performed on both as-received and chemically oxidized single-walled carbon nanotubes (SWCNTs) grown by two different growth methods to better understand the preferential association...
Elastometric sensing using higher flexural eigenmodes of microcantilevers (2007)
Spletzer, M., Raman, A., Reifenberger, R.
We present a method to detect with high sensitivity the viscoelastic property changes of sensor coatings on microcantilever arrays due to radiation, analyte binding, or adsorption. The method uses...
Biswas, K., Qin, Y., DaSilva, M., Reifenberger, R., Sands, T.
A procedure to fabricate a highly ordered electrodeposited nanowire array in a porous anodic alumina template with nanowires of uniform length and exposed tips for establishing low-resistance ohmic...
Calibrating a tuning fork for use as a scanning probe microscope force sensor (2007)
Quartz tuning forks mounted with sharp tips provide an alternate method to silicon microcantilevers for probing the tip-substrate interaction in scanning probe microscopy. The high quality factor and...
Oligodeoxyribonucleotide association with single-walled carbon nanotubes studied by SPM (2007)
Lahiji, R. R., Dolash, B. D., Bergstrom, D. E., Reifenberger, R.
Studies have been performed on both as-received and chemically oxidized single-walled carbon nanotubes (SWCNTs) grown by two different growth methods to better understand the preferential association...
Thermionic emission from surface-terminated nanocrystalline diamond (2006)
Robinson, Vance S., Show, Yoshiyuki, Swain, Greg M., Reifenberger, R., Fisher, Timothy S.
Thermionic electron emission forms the basis of both electron sources for a variety of applications and a direct energy conversion process that is compact and scalable. The present study...
Parametric resonance based scanning probe microscopy (2006)
Moreno-Moreno, M., Raman, Arvind, Gomez-Herrero, J., Reifenberger, R.
We propose a mode of dynamic scanning probe microscopy based on parametric resonance for highly sensitive nanoscale imaging and force spectroscopy. In this mode the microcantilever probe is excited...
Parametric resonance based scanning probe microscopy (2006)
Moreno-Moreno, M., Raman, Arvind, Gomez-Herrero, J., Reifenberger, R.
We propose a mode of dynamic scanning probe microscopy based on parametric resonance for highly sensitive nanoscale imaging and force spectroscopy. In this mode the microcantilever probe is excited...
Ultrasensitive mass sensing using mode localization in coupled microcantilevers (2006)
Spletzer, Matthew, Raman, Arvind, Wu, Alexander Q., Xu, Xianfan, Reifenberger, R.
We use Anderson or vibration localization in coupled microcantilevers as an extremely sensitive method to detect the added mass of a target analyte. We focus on the resonance frequencies and...
Parametric resonance based scanning probe microscopy (2006)
Moreno-Moreno, M., Raman, A., Gomez-Herrero, J., Reifenberger, R.
We propose a mode of dynamic scanning probe microscopy based on parametric resonance for highly sensitive nanoscale imaging and force spectroscopy. In this mode the microcantilever probe is excited...
Ultrasensitive mass sensing using mode localization in coupled microcantilevers (2006)
Spletzer, M., Raman, A., Wu, A. Q., Xu, X. F., Reifenberger, R.
We use Anderson or vibration localization in coupled microcantilevers as an extremely sensitive method to detect the added mass of a target analyte. We focus on the resonance frequencies and...
Trends in nanotechnology (TNT2005) (2006)
Correia, A., Serena, P. A., Saenz, J. J., Reifenberger, R., Ordejon, P.
Trends in nanotechnology (TNT2005) (2006)
Correia, A., Serena, P. A., Saenz, J. J., Reifenberger, R., Ordejon, P.
Parametric resonance based scanning probe microscopy (2006)
Moreno-Moreno, M., Raman, A., Gomez-Herrero, J., Reifenberger, R.
We propose a mode of dynamic scanning probe microscopy based on parametric resonance for highly sensitive nanoscale imaging and force spectroscopy. In this mode the microcantilever probe is excited...
Ultrasensitive mass sensing using mode localization in coupled microcantilevers (2006)
Spletzer, M., Raman, A., Wu, A. Q., Xu, X. F., Reifenberger, R.
We use Anderson or vibration localization in coupled microcantilevers as an extremely sensitive method to detect the added mass of a target analyte. We focus on the resonance frequencies and...
Tuning forks mounted with sharp tips provide an alternate method to silicon microcantilevers for probing the tip-subsrate interaction in scanning probe microscopy. The high quality factor and stable...
GaN nanorod Schottky and p-n junction diodes (2006)
Deb, P., Kim, H., Qin, Y. X., Lahiji, R., Oliver, M., Reifenberger, R., ...
Conductive atomic force microscopy has been used to characterize single GaN nanorod Schottky and p-n junction diodes. The ideality factor, reverse breakdown voltage, and the Schottky barrier height...
Tuning forks mounted with sharp tips provide an alternate method to silicon microcantilevers for probing the tip-substrate interaction in scanning probe microscopy. The high quality factor and stable...
Parametric resonance based scanning probe microscopy (2006)
Moreno-Moreno, M., Raman, A., Gomez-Herrero, J., Reifenberger, R.
We propose a mode of dynamic scanning probe microscopy based on parametric resonance for highly sensitive nanoscale imaging and force spectroscopy. In this mode the microcantilever probe is excited...
Ultrasensitive mass sensing using mode localization in coupled microcantilevers (2006)
Spletzer, M., Raman, A., Wu, A. Q., Xu, X. F., Reifenberger, R.
We use Anderson or vibration localization in coupled microcantilevers as an extremely sensitive method to detect the added mass of a target analyte. We focus on the resonance frequencies and...
GaN nanorod Schottky and p-n junction diodes (2006)
Deb, P., Kim, H., Qin, Y. X., Lahiji, R., Oliver, M., Reifenberger, R., ...
Conductive atomic force microscopy has been used to characterize single GaN nanorod Schottky and p-n junction diodes. The ideality factor, reverse breakdown voltage, and the Schottky barrier height...
Probing attractive forces at the nanoscale using higher-harmonic dynamic force microscopy (2005)
Crittenden, S., Raman, Arvind, Reifenberger, R.
We systematically investigate higher harmonics in the vibration spectrum of scanning force microscope cantilevers operating in the attractive regime. We show that a the magnitudes of the...
Probing attractive forces at the nanoscale using higher-harmonic dynamic force microscopy (2005)
Crittenden, S., Raman, A., Reifenberger, R.
We systematically investigate higher harmonics in the vibration spectrum of scanning force microscope cantilevers operating in the attractive regime. We show that (a) the magnitudes of the...
Complex dynamics of carbon nanotube probe tips (2005)
Lee, S. I., Howell, S. W., Raman, A., Reifenberger, R., Nguyen, C. V., Meyyappan, M.
Carbon nanotube (CNT) tips in tapping mode atomic force microscopy (AFM) enable very high-resolution imaging, measurements, and manipulation at the nanoscale. We present recent results based on...
Detection of Bacillus spores using peptide functionalized microcantilever arrays (2005)
Doorneweerd, D., Henne, W. A., Dhayal, B., Reifenberger, R., Low, P. S.
Soft lithography based micron-scale electrophoretic patterning of purple membrane (2005)
Crittenden, S., Reifenberger, R., Hillebrecht, J., Birge, R., Inerowicz, D., Regnier, F.
Soft lithography and thermal evaporation of gold were used to create microfluidic channels with metal only on the bottom surface of each channel, in a process similar to nanotransfer printing (nTP)....
Probing attractive forces at the nanoscale using higher-harmonic dynamic force microscopy (2005)
Crittenden, S., Raman, A., Reifenberger, R.
We systematically investigate higher harmonics in the vibration spectrum of scanning force microscope cantilevers operating in the attractive regime. We show that (a) the magnitudes of the...
Soft lithography based micron-scale electrophoretic patterning of purple membrane (2005)
Crittenden, S., Reifenberger, R., Hillebrecht, J., Birge, R., Inerowicz, D., Regnier, F.
Soft lithography and thermal evaporation of gold were used to create microfluidic channels with metal only on the bottom surface of each channel, in a process similar to nanotransfer printing (nTP)....
Detection of Bacillus spores using peptide functionalized microcantilever arrays (2005)
Doorneweerd, D., Henne, W. A., Dhayal, B., Reifenberger, R., Low, P. S.
Complex dynamics of carbon nanotube probe tips (2005)
Lee, S. I., Howell, S. W., Raman, A., Reifenberger, R., Nguyen, C. V., Meyyappan, M.
Carbon nanotube (CNT) tips in tapping mode atomic force microscopy (AFM) enable very high-resolution imaging, measurements, and manipulation at the nanoscale. We present recent results based on...
Lee, S. I, Howell, S. W., Raman, Arvind, Reifenberger, R., Nguyen, C. V, Meyyappan, M.
The nonlinear dynamics of an atomic force microcantilever (AFM) with an attached multi-walled carbon nanotube (MWCNT) tip is investigated experimentally and theoretically. We present the experimental...
Enhanced mass sensing using torsional and lateral resonances in microcantilevers (2004)
Sharos, L. B., Raman, A., Crittenden, S., Reifenberger, R.
We present a method to detect, with enhanced sensitivity, a target mass particle attached eccentrically to a microcantilever by measuring multiple three-dimensional modes in the microcantilever...
Hu, S. Q., Howell, S., Raman, A., Reifenberger, R., Franchek, M.
Hamaker constants are characteristic material properties that determine the magnitude of the nonlinear van der Waals force between atoms, molecules and nanoscale aggregates of atoms. This paper...
Trends in nanotechnology (2004)
Correia, A., Serena, P. A., Saenz, J. J., Welland, M., Reifenberger, R.
Lee, S. I., Howell, S. W., Raman, A., Reifenberger, R., Nguyen, C. V., Meyyappan, M.
The nonlinear dynamics of an atomic force microcantilever (AFM) with an attached multi-walled carbon nanotube (MWCNT) tip is investigated experimentally and theoretically. We present the experimental...
Patterned protein microarrays for bacterial detection (2003)
Howell, S. W., Inerowicz, H. D., Regnier, F. E., Reifenberger, R.
Patterned microarrays of antibodies were fabricated and tested for their ability to bind targeted bacteria. These arrays were used in a series of bacterial immunoassays to detect E. coli O157:147 and...
Crittenden, S., Howell, S., Reifenberger, R., Hillebrecht, J., Birge, R. R.
Non-contact electrostatic force microscopy techniques were used to study the open-circuit photovoltage of purple membrane multilayers electrodeposited on indium tin oxide. A humidity-dependent...
Nonlinear dynamic perspectives on dynamic force microscopy (2003)
Lee, S. I., Howell, S. W., Raman, A., Reifenberger, R.
Dynamic force microscopy (DFM) utilizes the dynamic response of a resonating probe tip as it approaches and retracts from a sample to measure the topography and material properties of a...
Conference on Trends in Nanotechnology (2002)
Correia, A, Reifenberger, R, Serena, P A, Sáenz, J J, Welland, Mark
Nanoelectronic device applications of a chemically stable GaAs structure (1999)
Janes, David B, Kolagunta, V. R, Batistuta, M., Walsh, B. L, Andres, Ronald P, Liu, Jia, ...
We report on nanoelectronic device applications of a nonalloyed contact structure which utilizes a surface layer of low-temperature grown GaAs as a chemically stable surface. In contrast to typical...
Negative Differential Resistance in the Scanning Tunneling Spectroscopy of Organic Molecules (1999)
Yongqiang Xue, Supriyo Datta, Seunghun Hong, R. Reifenberger, Jason I. Henderson, Clifford P. Kubiak
In the interpretation of scanning tunneling spectroscopy (STS) data on molecular nanostructures the tunneling conductance is often assumed to be proportional to the local density of states of the...
Negative Differential Resistance in the Scanning Tunneling Spectroscopy of Organic molecules (1998)
Xue, Yongqiang, Datta, Supriyo, Hong, Seunghun, Reifenberger, R., Henderson, Jason I., Kubiak, Cliff P.
The conductance-voltage spectrum of molecular nanostructures measured by scanning tunneling spectroscopy (STS) is generally assumed to reflect the local density of states of the molecule. This...
Hybrid Molecular and Spin-Semiconductor Based Research (1998)
Datta, S., Reifenberger, R., Janes, D., Bhattacharya, P., Steel, D.
This project has three thrusts. Thrust I is entitled "Integrated Bacteriorhodopsin-Based Photodetectors" and its objective is to enable a new class of optoelectronic devices by combining the...
Electron Mobility in N-Type Epitaxial ZnSe. (1998)
An analysis of the temperature dependent mobility in lightly doped ZnSe epitaxial layers grown on a semi-insulating GaAs substrate by Molecular Beam Epitaxy is reported. Our results indicate that the...