A method to derivatize surface silanol groups to Si-alkyl groups in carbon-doped silicon oxides
SR Darmakkolla, H Tran, A Gupta, SB Rananavare - RSC advances, 2016 - pubs.rsc.org
A carbon-doped silicon oxide (CDO) finds use as a material with a low dielectric constant (k)
for copper interconnects in multilayered integrated circuits (ICs). Hydrophilic silanol groups
(Si–OH) on its surface, however, can attract moisture, thereby causing an undesirable …
Room temperature Cl2 sensing using thick nanoporous films of Sb-doped SnO2
A Chaparadza, SB Rananavare - Nanotechnology, 2008 - iopscience.iop.org
Thick film resistive Cl 2 sensors were fabricated using SnO 2 doped with Sb. The
nanocrystalline powders of Sb-doped SnO 2 synthesized by a sol–gel method were
compressed into an 800 µm thick pellet. The fabricated sensors were tested against gases …
Tetraether bolaform amphiphiles as models of archaebacterial membrane lipids: Raman spectroscopy, phosphorus-31 NMR, x-ray scattering, and electron …
DH Thompson, Kim Wong, R. Humphry-Baker, JJ Wheeler JM Kim, SB Rananavare - Journal of the …, 1992 - ACS Publications
Freeze-fracture and cryo-transmission electron microscopy, low-angle X-ray scattering, 31P
NMR, and Raman spectroscopy have been used to characterize the properties of synthetic
tetraether bolaform amphiphiles in aqueous solution (Kim, J.-M.; Thompson, DH Langmuir …
Morphology-controlled copper nanowire synthesis and magnetic field assisted self-assembly
Srikar Rao Darmakkolla, AF Pareira, A Jenike, M Tahir, SB Rananavare - Nanoscale, 2019 - pubs.rsc.org
Morphology, dimensions, crystalline structure and compositions of nanomaterials are very
critical in determining their unique characteristics. Here we report how the reducing agent
concentration affects the surface morphology of copper nanowires and establish the …
Hydrophobic surfactant proteins strongly induce negative curvature
M Chavarha, RW Loney, SB Rananavare, SB Hall - Biophysical journal, 2015 - Elsevier
The hydrophobic surfactant proteins SP-B and SP-C greatly accelerate the adsorption of
vesicles containing the surfactant lipids to form a film that lowers the surface tension of the
air/water interface in the lungs. Pulmonary surfactant enters the interface by a process …
SF5-Terminated Fluorinated Schiff Base Liquid Crystals
Jeremy A Smith, Robert DiStasio, Nicole Hannah, Rolf Winter, TJR Weakley, GL Gard, SB Rananavare - The Journal of …, 2004 - ACS Publications
Novel liquid crystals based on fluorinated carbon chains and terminated with SF5 groups
are presented for the first time. Attachment of an SF5 group separated from a benzylidine
group by a fluorinated spacer leads to monotropic nematic and smectic phases, while an …
Bolaamphiphilic phosphocholines: structure and phase behavior in aqueous media
CD Meglio, SB Rananavare, S Svenson… - Langmuir, 2000 - ACS Publications
The phase behavior of 1, 1 '-di-O-eicosamethylene-2, 2 '-di-O-decylbis (glycero-3-
phosphocholine)(1) and 1, 1 '-di-O-hexadecamethylene-2, 2 '-di-O-octylbis (glycero-3-
phosphocholine)(2) was studied at the air− water interface and in aqueous dispersions …
Hydrophobic surfactant proteins induce a phosphatidylethanolamine to form cubic phases
Mariya Chavarha, Hamed Khoojinian, LE Schulwitz Jr, SC Biswas, SB Rananavare… - Biophysical journal, 2010 - Elsevier
The hydrophobic surfactant proteins SP-B and SP-C promote rapid adsorption of pulmonary
surfactant to an air/water interface. Previous evidence suggests that they achieve this effect
by facilitating the formation of a rate-limiting negatively curved stalk between the vesicular …
The Lγ Phase of Pulmonary Surfactant
Kamlesh Kumar, M Chavarha, RW Loney, TM Weiss, SB Rananavare… - Langmuir, 2018 - ACS Publications
To determine how different components affect the structure of pulmonary surfactant, we
measured X-ray scattering by samples derived from calf surfactant. The surfactant
phospholipids demonstrated the essential characteristics of the Lγ phase: a unit cell with a …
Interdigitated smectic A and B mesophases in higher homologues of the 5O.m series
V Pisipati, SB Rananavare - Liquid Crystals, 1993 - Taylor & Francis
We report the synthesis, characterization and structural studies of the higher homologues of
N (4-n-pentyloxybenzylidene) 4-n-alkylaniline compounds, viz. 5O. 12, 5O. 14 and 5O. 16 by
thermal microscopy, differential scanning calorimetry and X-ray diffraction. The compounds …
Single component photoacid/photobase generators: potential applications in double patterning photolithography
…, TLE Wee, H Tran, SB Rananavare… - Journal of Materials …, 2013 - pubs.rsc.org
193 nm light as an excitation source for resist patterning is limited due to the inability to
achieve pitch division much below limits of λ/2. Current techniques are examining the use of
a variety of photochemical manipulations as a means to extend lithographic patterning to …
Smectic-A–smectic-C–smectic- multicritical point in ferroelectric liquid crystals
SB Rananavare, V Pisipati, EW Wong - Physical review letters, 1994 - APS
We report a smectic-A–smectic-C–smectic-C*(ACC*) multicritical point in mixtures of chiral
DOBAMBC [p-(n-decyloxybenzylidene)-p-amino-(2-methyl-butyl)] cinnamate and achiral
10O. 8 (4-decyloxybenzylidene-4-octylaniline). Studies of the phase diagram, tilt angle (θ) …
Synthesis and characterization of lithium-doped tin dioxide nanocrystalline powders
A Chaparadza, SB Rananavare… - Materials chemistry and …, 2007 - Elsevier
In order to develop a better understanding of Li-doping in SnO 2 nanoparticles, a gel–sol
method of synthesis is employed to systematically examine the influence of reaction and
growth conditions such as pH, dopant concentration, and calcinations temperature. The …
Towards p-type conductivity in SnO2 nanocrystals through Li doping
A Chaparadza, SB Rananavare - Nanotechnology, 2009 - iopscience.iop.org
This paper examines electrical transport properties and Li doping in SnO 2 synthesized by
the sol–gel method. Solid-state 7 Li-NMR lineshapes reveal that Li ions occupy two distinct
sites with differing dynamic mobilities. The chemical exchange rate between the two sites is …
An anionic phospholipid enables the hydrophobic surfactant proteins to alter spontaneous curvature
M Chavarha, RW Loney, SB Rananavare, SB Hall - Biophysical journal, 2013 - Elsevier
The hydrophobic surfactant proteins, SP-B and SP-C, greatly accelerate the adsorption of
the surfactant lipids to an air/water interface. Previous studies of factors that affect curvature
suggest that vesicles may adsorb via a rate-limiting structure with prominent negative …
Differential effects of lysophosphatidylcholine on the adsorption of phospholipids to an air/water interface
SC Biswas, SB Rananavare, SB Hall - Biophysical journal, 2007 - Elsevier
To determine how the hydrophobic surfactant proteins promote insertion of the surfactant
lipids into an air/water interface, we measured the effect of lysophosphatidylcholine (LPC)
on adsorption. Existing models contend that the proteins function either by disordering the …
Differential effects of the hydrophobic surfactant proteins on the formation of inverse bicontinuous cubic phases
M Chavarha, RW Loney, K Kumar, SB Rananavare… - Langmuir, 2012 - ACS Publications
Prior studies have shown that the biological mixture of the two hydrophobic surfactant
proteins, SP–B and SP–C, produces faster adsorption of the surfactant lipids to an air/water
interface, and that they induce 1-palmitoyl-2-oleoyl phosphatidylethanolamine (POPE) to …
Effects of gramicidin-A on the adsorption of phospholipids to the air–water interface
SC Biswas, SB Rananavare, SB Hall - Biochimica et Biophysica Acta (BBA) …, 2005 - Elsevier
Prior studies suggest that the hydrophobic surfactant proteins, SP-B and SP-C, promote
adsorption of the lipids in pulmonary surfactant to an air–water interface by stabilizing a
negatively curved rate-limiting structure that is intermediate between bilayer vesicles and the …
Two‐dimensional electron–electron double resonance and electron spin–echo study of solute dynamics in smectics
J Gorcester, SB Rananavare… - The Journal of chemical …, 1989 - aip.scitation.org
Electron spin–echo (ESE) and two‐dimensional electron–electron double resonance (2D
ELDOR) experiments have been performed as a function of director orientation and
temperature in the smectic A phase of the liquid crystal S2 for the spin–probe PD‐tempone …
ESR and DSC investigations of phase transitions in polymorphic 4-n-alkoxybenzylidene-4′-n-alkylanilines
SB Rananavare, V Pisipati, JH Freed - Liquid Crystals, 1988 - Taylor & Francis
It is shown that the McMillan parameter M= T SAN/T N1 (where T SAN and T NI are
respectively the temperatures of the smectic A to nematic (SAN) and the nematic to isotropic
(NI) phase transitions) is useful in analysing the crossover between second and first order …
Controlled Deposition of Tin Oxide and Silver Nanoparticles Using Microcontact Printing
JC Chan, N Hannah-Moore, SB Rananavare - Crystals, 2015 - mdpi.com
This report describes extensive studies of deposition processes involving tin oxide (SnO x)
nanoparticles on smooth glass surfaces. We demonstrate the use of smooth films of these
nanoparticles as a platform for spatially-selective electroless deposition of silver by soft …
Facile pyrolytic synthesis of silicon nanowires
JC Chan, H Tran, JW Pattison, SB Rananavare - Solid-state electronics, 2010 - Elsevier
One-dimensional nanostructures such as silicon nanowires (SiNW) are attractive candidates
for low power density electronic and optoelectronic devices including sensors. A new simple
method for SiNW bulk synthesis [1],[2] is demonstrated in this work, which is inexpensive …
Corrosion behavior of copper thin films in organic HF-containing cleaning solution for semiconductor applications
Nabil Mistkawi, Makarem Hussein,, M Ziomek-Moroz, SB Rananavare - Journal of The …, 2009 - iopscience.iop.org
The corrosion behavior of electrochemically deposited copper thin films in deaerated and
non-deaerated commercial cleaning solutions containing HF was investigated.
Potentiodynamic polarization experiments were carried out to determine active, active …
The accelerated late adsorption of pulmonary surfactant
RW Loney, WR Anyan, SC Biswas, SB Rananavare… - Langmuir, 2011 - ACS Publications
Adsorption of pulmonary surfactant to an air− water interface lowers surface tension (γ) at
rates that initially decrease progressively, but which then accelerate close to the equilibrium
γ. The studies here tested a series of hypotheses concerning mechanisms that might cause …
Mechanisms of aging of antimony doped tin oxide based electrochromic devices
JC Chan, NA Hannah, SB Rananavare… - Japanese journal of …, 2006 - iopscience.iop.org
Electrochromic effects of antimony doped tin oxide (ATO) nanoparticles are investigated to
probe device yellowing (degradation). Voltage vs contrast ratio curves exhibit hysteresis, ie,
image-sticking phenomena due to irreversible charge insertion. X-ray, impedance and …
Reducing the effects of shot noise using nanoparticles
MK Morakinyo, SB Rananavare - Journal of Materials Chemistry C, 2015 - pubs.rsc.org
We report a hybrid nano-lithographic approach to minimizing the effects of line-edge
roughness and shot noise in nano-hole patterning. Photoresist polymers were reflowed
around nanoparticles deposited by self-assembly and simple etch chemistry. The method …
Optimizing the performance of a commercial electrochemical ethylene sensor via controlled ethylene generation in situ
Ryan Lerud, D Beseau, CM Hale, C Noll, SB Rananavare - Sensors and Actuators B …, 2019 - Elsevier
Ethylene, which regulates fruit ripening processes in some species, is a molecule of central
interest to postharvest researchers and technologists. There is a need for a portable,
inexpensive, accurate, and repeatable sensor for infield or storeroom measurements. To …
An overview of liquid crystals based on schiff base compounds
SB Rananavare, V Pisipati - … and Polymers as Materials of the XXI …, 2011 - researchgate.net
In the mid sixties, the pioneering research efforts at RCA and Xerox brought attention to
possibility of using a relatively unknown class of organic materials, ie, liquid crystals (LC's),
for modulating electro-optic properties of light for fabricating a revolutionary new flat panel …
Order parameters of hydrocarbons solubilized in a lamellar liquid crystal
DW Larsen, SB Rananavare - The Journal of Physical Chemistry, 1984 - ACS Publications
A preliminary study of the 12H NMR spectrum of n-hexadecane-i/34 solubilized in the
lamellar phase of tetraethylene glycol n-dodecyl ether has been made as a function of
solubilizatecontent. Complex spectra comprising eight overlapping powder spectra were …
Dynamic structure of n-hexadecane solubilized in a nonionic surfactant bilayer measured by deuteron magnetic resonance
AJI Ward, SE Friberg, DW Larsen, SB Rananavare - Langmuir, 1985 - ACS Publications
A2h NMR study was made of the order parameters of n-hexadecane molecules solubilized
up to 55%(w/w) in a lyotropic lamellar liquid crystal of tetraethyleneglycol n-dodecyl ether
and water for a range of compositions of varyingwater and hydrocarbon content. The NMR …
Synthesis and characterization of N-and P-doped tin oxide nanowires
HA Tran, SB Rananavare - 2011 11th IEEE International …, 2011 - ieeexplore.ieee.org
Bulk-scale synthetic methods for preparing doped tin oxide (SnO 2) nanowires (NWs) are
presented. n-and p-doping is achieved through insertion of Antimony and Lithium in tin
oxide lattice, respectively. We also present a comparison of the structural and optical …
Alignment of a nonaqueous lyotropic liquid crystalline phase with lecithin
DW Larsen, SB Rananavare… - Journal of the American …, 1984 - ACS Publications
NMR in recent years. The important NMR parameters can be obtained most easily from
oriented samples. For example, fol-lowing the discovery that the aqueous phase can be
aligned on glass plates, it was relatively straightforward to show that the proton broadening …
Solvent-Solute Interaction in an Lα Phase Formed With Water, Ethylene Glycol and Lecithin
SB Rananavare, AJI Ward, SE Friberg… - Molecular Crystals and …, 1986 - Taylor & Francis
The variation in the order parameter with the ethylene glycol/water ratio was determined by
deuterium HMR groups in ethylene glycol were determined in an L liquid crystalline phase
of lecithin, water and ethylene glycol. In addition, the interlayer spacing was determined by …
Solvation changes induced in a lyotropic lamellar liquid crystal containing solubilized benzene
AJI Ward, SB Rananavare, SE Friberg - Langmuir, 1986 - ACS Publications
Deuterium NMR quadrupole splittings of deuterated benzene and water were studied as a
function of their composition in the aqueous lamellar phase of pentaethylene glycol n-
dodecyl ether. Aninterpretation of the results is given in terms ofhydration changes of the …
Method for patterning sub-50-nanometers structures
SB Rananavare, MK Morakinyo - US Patent 9,620,365, 2017 - Google Patents
Sub-50-nm structures are formed using sequential top-down and bottom up lithographies in
conjunction with selective etching. The preferred rendition of the method involves:(a) rough
lithographic patterning,(b) size/shape selected nanostructure deposition,(c) resist reflow …
X-ray diffraction studies of 10O. 14 and 10O. 8
V.G. Pisipati, SB Rananavare - Molecular crystals and …, 1994 - pascal-francis.inist.fr
Pascal 001 Exact sciences and technology/001B Physics/001B60 Condensed matter:
structure, mechanical and thermal properties/001B60A Structure of solids and liquids;
crystallography/001B60A10 X-ray diffraction and scattering/001B60A10H X-ray absorption …
Copper thin-film dissolution/precipitation kinetics in organic HF containing cleaning solution
Nabil Mistkawi, Makarem Hussein, M Ziomek-Moroz, SB Rananavare - Journal of The …, 2010 - iopscience.iop.org
The corrosion behavior of electrochemically deposited copper thin films in deaerated and
non-deaerated commercial cleaning solution containing HF has been investigated. Thin-film
copper dissolution and reaction kinetics were investigated by monitoring, employing …
Aromatic pentafluoro-λ6-sulfanyl (SF5) surfactants: m-SF5 (CF2) nC6H4SO3K
S. Winner, R. Winter, J. Smith, GL Gard, NA Hannah, SB Rananavare… - Mendeleev …, 2006 - Elsevier
For over 40 years,1 the only known SF5-aromatic systems con- tained the SF5C6H4 moiety.
The new synthetic strategy that we have recently developed2 has opened the floodgate for
pre- paring a large assortment of o, m, p-SF5(CF2)nC6H4X and chiral o, m, p-SF5CF2CFYC6H4X …
Molecular motion and phases in an equimolar phosphatidylcholine/ethylene glycol system
DW Larsen, SB Rananavare, FE Stary… - The Journal of …, 1984 - ACS Publications
An equimolar mixture of phosphatidylcholine and ethylene glycol was studied by pulsed
proton NMR at temperatures between 100 and430 K. Relaxation times 7), Tlp, and TID, and
second moments, M2, were measured. The system is lamellar liquid crystalline at room …
Positional control over nanoparticle deposition into nanoholes
MK Morakinyo, SB Rananavare - 2011 11th IEEE International …, 2011 - ieeexplore.ieee.org
Controlled deposition of metal nanoparticles (NPs) into lithographic patterned nanoholes
has been a major challenge. Electrostatic attraction was employed in directing gold NPs of
precise size into e-beam lithographically patterned holes. Citrate stabilized gold NPs with a …
Photochemical reactivity of bis-carbamate photobase generators
Hoang Tran, Ed Jackson, J Eldo, R Kanjolia, SB Rananavare - 2011 11th IEEE …, 2011 - ieeexplore.ieee.org
The extension of 193nm technology is desirable due to the magnitude of past investments.
Since “optical” advances are increasingly difficult, there is a strong demand for more
sophisticated “smart” resists to increase pattern density. Many studies have proven double …
Comments on the mechanism of aging of Antimony doped Tin Oxide based electrochromic devices
JC Chan, NA Hannah, SB Rananavare, L Yeager… - 2006 - pdxscholar.library.pdx.edu
Electrochromic effects of antimony doped tin oxide (ATO) nanoparticles are investigated to
probe device yellowing (degradation). Voltage vs contrast ratio curves exhibit hysteresis, ie,
image-sticking phenomena due to irreversible charge insertion. X-ray, impedance and …
Low-overpotential Electrochemical Reduction of CO2 to Formic Acid on Surface-modified Doped Tin Oxide Pellets
E Abdul, J Pitts, D Rajput, S Rananavare - ECSarXiv. October, 2019 - iopscience.iop.org
Gas sensors fabricated with antimony doped tin oxide (ATO) nanomaterials exhibit
remarkable sensitivity for detecting oxidizing and reducing gases. This study highlights the
enhanced selectivity and stability of the porous ATO nanomaterial electrode made for …
X-Ray Diffraction Studies of 10O. 14 and 10O. 8
V Pispati, SB Rananavare - Molecular Crystals and Liquid Crystals …, 1994 - Taylor & Francis
The compounds N (pn-decyloxybenzylldene) pn-tetradecylaniline. 10O. 14, and N (pu-
decyloxyben-zy1idene) pn-octylaniline. 10O. 8 of the well known nO. m homologous series
exhibit FG and ACFG phase sequence variants. The molecular tilt in the tilted smectic C, F …
Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography
SB Rananavare, MK Morakinyo - JoVE (Journal of Visualized Experiments), 2017 - jove.com
Nano-patterns fabricated with extreme ultraviolet (EUV) or electron-beam (E-beam)
lithography exhibit unexpected variations in size. This variation has been attributed to
statistical fluctuations in the number of photons/electrons arriving at a given nano-region …
Polymer-based Soft Topographical Features Functionalized by Magnetron Sputtering
Deepak Rajput, Emmanuel Abdul, Srikar R Darmakkolla, Frederick DeArmond, L Costa, A Terekhov, SB Rananavare - 2018 IEEE 13th …, 2018 - ieeexplore.ieee.org
We report on the feasibility of preparing nickel and niobium nitride coated cellulose acetate
(CA) topographical features through a combination of template-synthesis and sputter
deposition. Using femtosecond laser micromachining, a template was produced by …
The L-Gamma Phase of Pulmonary Surfactant
K Kumar, M Chavarha, , RW Loney, MP Dagan, TM Weiss, SB Rananavare… - Biophysical …, 2017 - cell.com
When compressed, alveolar films of pulmonary surfactant resist collapse from the air/water
interface. This physiologically essential characteristic remains unexplained. Recent studies
show that self-assembled films of pulmonary surfactant formed by adsorption are more …
Use of Sacrificial Nanoparticles to Remove the Effects of Shot-noise in Contact Holes Fabricated by E-beam Lithography
MK Morakinyo, SB Rananavare - 2017 - pdxscholar.library.pdx.edu
Nano-patterns fabricated with extreme ultraviolet (EUV) or electron-beam (E-beam)
lithography exhibit unexpected variations in size. This variation has been attributed to
statistical fluctuations in the number of photons/electrons arriving at a given nano-region
Bubbling and foaming assisted clearing of mucin plugs in microfluidic Y-junctions
D Abdula, R Lerud, S Rananavare - Journal of biomechanics, 2017 - Elsevier
Microfluidic Y-junctions were used to study mechanical mechanisms involved in pig gastric
mucin (PGM) plug removal from within one of two bifurcation branches with 2-phase air and
liquid flow. Water control experiments showed moderate plug removal due to shear from …
Towards p-Type Conductivity in SnO 2 Nanocrystals through Li Doping and Its Applications in Porous Diodes for Room Temperature Chlorine Gas Detection
A Chaparadza, S Rananavare - 2016 - iopscience.iop.org
This work examined electrical transport properties and Li doping in SnO 2 synthesized by
the sol–gel method. Solid-state 7 Li-NMR line shapes revealed that Li ions occupy two
distinct sites with differing dynamic mobilities. The chemical exchange rate between the two …
Bis Photobase Generator
H Tran, SB Rananavare - 2011 - pdxscholar.library.pdx.edu
The extension of 193nm technology is desirable due to the magnitude of past investments.
Since “optical” advancements are increasingly difficult, there is a strong demand for more
sophisticated “smart” resists to increase pattern density. Many studies have proven double …
Lifshitz point in ferroelectric liquid crystals
SB Rananavare, V Pisipati… - Liquid Crystal Materials …, 1994 - spiedigitallibrary.org
Ferroelectric liquid crystals (FLCs) find many applications in display devices, waveguide
switching and optical computing. These applications exploit the electrically alignable
polarization of FLCs in the Smectic C*(SmC*) phase. In the absence of an electrical field, the …
Facile pyrolytic synthesis of silicon nanowires
James Pattison, JC Chan, H Tran, SB Rananavare - 2009 International …, 2009 - ieeexplore.ieee.org
One-dimensional nanostructures are attractive candidates for low power density electronic
and optoelectronic devices. A new facile method for SiNW bulk synthesis is demonstrated in
this work which is inexpensive and uses low toxicity material thereby offering a safe, energy …
Interaction of Hydrophobic Surfactant Proteins with Oriented Phospholipid Bilayers
K Kumar, R Loney, M Chavarha, SB Rananavare… - Biophysical …, 2012 - cell.com
The hydrophobic surfactant proteins, SP-B and SP-C (SPs), promote rapid adsorption of
phospholipids to an air-water interface by a mechanism that remains unclear. To understand
the structural changes that lead to faster adsorption, we measured small-angle X-ray …
Anionic Phospholipids change the Effect of the Hydrophobic Surfactant Proteins on Structures of Hexagonal Lipids
M Chavarha, R Loney, K Kumar, SB Rananavare… - Biophysical …, 2012 - cell.com
Available evidence suggests that the hydrophobic surfactant proteins (SPs), SP-B and SP-C,
accelerate adsorption of surfactant vesicles to an air/water interface by promoting formation
of a negatively curved rate-limiting structure. In support of this model, the proteins induce …
Amperometric Ethylene Sensor with Interfering Gas Trap
R Lerud, LF Shankar Rananavare, J Goecks… - pdfs.semanticscholar.org
Page 1. Amperometric Ethylene Sensor with Interfering Gas Trap Ryan Lerud*1, Shankar
Rananavare1, Leonard Felix2, Jim Goecks2, Sergey Tereskchenko2 1Departments of Physics
and Chemistry, Portland State University, OR 97207-0751; 2CID Bio-Science, Camas, WA …
Two-dimensional FTESR and Solute Dynamics in Smectics
J Gorcester, SB Rananavare, JH Freed, F Morzine - 1989 - weizmann.ac.il
Two-dimensional spectroscopies based on the Fourier transform technique may now be
applied to the ESR of nitroxides [1]. To achieve uniform coherent excitation of spectral
bandwidths in excess of 90 MHz we have developed a TWT anode modulator with switching …
In Memory of Pierre-Gilles de Gennes
SB Rananavare, SA Safran, F Brochard-Wyart - 2009 - ACS Publications
This special issue of the Journal of Physical Chemistry contains research articles on the
properties of soft matters polymers, colloids, liquid crystals, surfactant self-assembly, wetting,
and biologically inspired materials. As mentioned in the biography of de Gennes, our …
The Pivotal Plane of Phosphatidylethanolamine is Unaffected by the Hydrophobic Surfactant Proteins
M Chavarha, LE Schulwitz, SB Rananavare, SB Hall - Biophysical Journal, 2011 - cell.com
Mi Jin Son, Erwin London. We recently developed a method in which methyl-beta-
cyclodextrin (MbCD)-induced lipid exchange was used to prepare model membrane
vesicles with a stable asymmetry and which, like plasma membranes, have an outer leaflet …
An Anionic Phospholipid Enables the Hydrophobic Surfactant Proteins to Alter Spontaneous Curvature
R Loney, M Chavarha, SB Rananavare, SB Hall - Biophysical Journal, 2013 - cell.com
The cationic, hydrophobic surfactant proteins, SP-B and SP-C (SPs), promote adsorption of
vesicles to an air water interface and greatly increase the rate of forming an alveolar film.
The available evidence suggests that the SPs may facilitate adsorption by promoting the …
The Hydrophobic Surfactant Proteins Induce Saddle-Shaped Structures Without Changing Spontaneous Curvature
M Chavarha, H Khoojinian, Leo Schulwitz Jr, SC Biswas, SB Rananavare… - … CELL BIOLOGY IN …, 2010 - atsjournals.org
The hydrophobic surfactant proteins perform the essential role of accelerating the formation
of a thin film at the alveolar air/water interface. Available evidence suggests that they
promote adsorption by facilitating formation of a rate-limiting, saddle-shaped stalk that
The Hydrophobic Surfactant Proteins Induce Cubic Phases Without Altering Spontaneous Curvature
H Khoojinian, S Hall, LC Schulwitz, SC Biswas, SB Rananavare… - Biophysical …, 2010 - cell.com
Our previous data suggest that Ab does not itself contribute a new intrinsic conductance to
the membrane but instead alters physical properties of the membrane specifically increasing
the apparent dielectric constant of hydrocarbon region. This change could in turn affect the …
The Hydrophobic Proteins of Pulmonary Surfactant Reduce Bilayer Elasticity
LE Schulwitz, M Chavarha, SB Rananavare, SB Hall - Biophysical Journal, 2011 - cell.com
Pulmonary surfactant is a complex mixture of phospholipids and proteins that lowers surface
tension at the alveolar air-water interface. The hydrophobic proteins SP-B and SP-C drive
adsorption of surfactant vesicles to form the interfacial film. To investigate the structural basis …
Mechanisms Of The Late Accelerated Adsorption Of Pulmonary Surfactant
SB Hall, RW Loney, SB Rananavare - C74. ACUTE LUNG INJURY …, 2011 - atsjournals.org
Most surfactants, such as common soaps and detergents, lower surface tension (γ) at rates
that become progressively slower. As an air/water interface becomes more crowded,
insertion of additional material becomes more difficult. The rate at which pulmonary …
The Hydrophobic Surfactant Proteins Induce Cubic-Phase Formation in a Hii Forming Phospholipid
SC Biswas, SB Rananavare, SB Hall - Biophysical Journal, 2009 - cell.com
We have found that fusion mediated by class II (eg Semliki Forest Virus E1) and class III (eg,
Vesicular Stomatitis Virus G) viral proteins are promoted by a trans-negative voltage and
prevented by a trans-positive potential across the target membrane. Endosomes, from which …
The Hydrophobic Surfactant Proteins Alter The Curvature Of Phospholipid Leaflets
Stephen Hall, M Chavarha, RW Loney, SB Rananavare - … : DO WE HAVE A …, 2013 - atsjournals.org
Among the numerous components of pulmonary surfactant, the hydrophobic proteins, SP-B
and SP-C, are the only constituents known to be essential for its biophysical function. SP-B
in particular substantially increases the rate at which the surfactant lipids adsorb to an …
The Effect of the Hydrophobic Surfactant Proteins on HII-Curvature Depends on the Cylindrical Radius
M Chavarha, RW Loney, SB Rananavare, SB Hall - Biophysical Journal, 2014 - cell.com
Monday, February 17, 2014 295a show similar behavior. They promote the adsorption of
vesicles to an air/water interface by a process analogous to fusion. They enhance the
negative spontaneous curvature of HII monolayers formed by dioleoyl …
Effect of Hydrophobic Surfactant Proteins on the Structure of Oriented Lipid Bilayers
K Kumar, LE Schulwitz, TM Weiss, SB Rananavare… - Biophysical …, 2011 - cell.com
Coupled equilibrium is a theme that runs throughout biochemical systems. It enables the
ability to modulate a protein's response as a function of changing ligand levels. Isothermal
titration calorimetry is a powerful tool to capture the thermodynamic signature of interactions …
Coaxial tips for infrared NSOM
Michael Hopkins, Andres La Rosa, John Freeouf, MK Morakinyo, S Rananavare… - 2011 11th IEEE …, 2011 - ieeexplore.ieee.org
We propose to use infrared light coupled with a near field scanning optical microscope
(NSOM) to probe organic materials. The initial emphasis will be on the 2.8-3.25 μm range,
which contains bands from both CH and OH stretching vibrations. This provides great …
Showcasing nanotechnology research from the Chemistry Department at Portland State University supported by Intel Corporation.
SB Rananavare - Nanoscale, 2019 - pubs.rsc.org
The presented research interfaces the bottom-up and top-down methods to self-assemble
copper nanowires as a potential interconnects on a wafer scale. A new dual-use thiol
termination method provides the necessary glue to bind nanowires to the dielectric trench …