Professor
Department of Chemical & Biomolecular Engineering
College of Engineering, University of Nebraska–Lincoln
212 OTHM Lincoln NE 68588-0643
rsaraf2@unl.edu
Research Interests:
Electronic Skin: Using tunneling phenomena, we are developing an ~100 nm thin film nanodevice that converts applied pressure to light and electric current. The spatial resolution that images stress is 100-fold better than the current state of the art devices. These devices have pressure sensitivity and resolution to sense texture on a level comparable to a human finger.
Electronics on Bacterium: Using the highly specialized structure of bacterium surface and the physiology of a specified microorganism, we are building an active electronic device made of nanoparticles and nanorods piggybacked on the organism. We have demonstrated our approach and built a humidity sensor with a 10-fold greater sensitivity than current microelectronic devices.
DNA and Protein Chip: Using the fundamental principles of optics, we are developing a novel chip that probes DNA and protein without using any labels. The uniqueness of the design is that it is relatively "blind" to non-specific binding and is quantitatively proportional to percent binding.
Dance of Ions at the Electrode: We have developed a special interferometer to measure ion motion close to the electrode within its ~3 nm thick electric double layer. The highly versatile apparatus is being used to study enzymatic binding reactions, redox processes and ions motion in confined media, i.e., nanopores. Nanomaterials on DNA and Polymer Scaffold: Using DNA and polymers as scaffold we are exploring the construction of long, continuous, electrically conducting nano-wires to use in single electron nanodevices that can easily be wired to form logic circuits.
2008
Polyelectrolyte mediated scalable synthesis of highly stable silver nanocubes in less than a minute using microwave irradiation, Subrata Kundu, Vivek C. Maheshwari, Sanjun Niu, and Ravi Saraf
Self-Assembly of a Micrometers-Long One-Dimensional Network of Cemented Au Nanoparticles, Vivek Maheshwari, Jennifer Kane, and Ravi Saraf
2007
Selective assembly of nanoparticles on block copolymer by surface modification, Sanjun Niu and Ravi Saraf
Linear Tactile Nanodevice with Resolution on Par with Human Finger, Ravi Saraf, Vivek C. Maheshwari, and Chieu Nguyen
2006
High-Resolution Thin-Film Device to Sense Texture by Touch, Vivek C. Maheshwari and Ravi Saraf
Direct Measurement of Ion Accumulation at the Electrode Electrolyte Interface under an Oscillatory Electric Field, Dr.Ravi Saraf
Means of Seeding and Metallizing Polyimide, Dr.Ravi Saraf
Mineralization of Monodispersed CdS Nanoparticles on Polyelectrolyte Superstructure Forming an Electroluminescent “Necklace-of-Beads”, Dr.Ravi F. Saraf and Vivek Maheshwari
Discover Magazine - Cyborg Bacteria, Ravi Saraf and Vikas Berry
Robot with the human touch feels just like us- Times online UK- Edition, Ravi Saraf and Vivek Maheshwari
2005
MSNBC - Gold-plated bacteria , Vikas Berry and Ravi Saraf
Self-Assembly of Nanoparticles on Live Bacterium: An avenue to fabricate Electronic Devices, Vikas Berry and Ravi Saraf
Self-Assembly of Nanoparticles on Live Bacterium: An Avenue to Fabricate Electronic Devices, Vikas Berry and Ravi Saraf
Deposition of CTAB-Terminated Nanorods on Bacteria to Form Highly Conducting Hybrid Systems, Dr.Ravi F. Saraf, Catherine J. Murphy, Subrata Kundu, Anand Gole, and Vikas Berry
Chemical& Engineering News - Gilded bacteria , Ravi Saraf and Vikas Berry
Nature - Nanotechnology-Live Wire, Ravi Saraf and Vikas Berry
Royal Society of Chemistry - Gold-plated bacteria, Ravi Saraf and Vikas Berry
Self-Assembly of Nanoparticles on Live Bacterium: An Avenue to Fabricate Electronic Devices, Ravi F. Saraf and Vikas Berry
2004
Highly Selective, Electrically Conductive Monolayer of Nanoparticles on Live Bacteria, V Berry, RangaSwamy S, and Ravi Saraf
Bio-Chip, Photoluminescent Methods for Identifying Biological Material, and Apparatuses for Use with Such Methods and Bio-Chips, Dr.Ravi Saraf
Optical Properties of an Immobilized DNA Monolayer from 255 to 700 nm, Dr.Ravi F. Saraf, Gaurav Singh, and Selim Elhadj
2003
Orientation of self-assembled block copolymer cylinders perpendicular to electric field in mesoscale film, S. Elhadj, J. W. Woody, V. S. Niu, and Ravi Saraf
Stability of Order in Solvent-Annealed Block Copolymer Thin Films, Sanjun Niu and Ravi Saraf
Ferroelectric Storage Read-Write Memory, Dr.Ravi Saraf
Method for Forming an Antenna and A Radio Frequency Transponder, Dr.Ravi Saraf
Micro Goniometer for Scanning Probe Microscopy, Dr.Ravi Saraf
Plasticized, Antiplasticized and Crystalline Conducting Polymers And Precursors Thereof, Dr.Ravi Saraf
Self Assembled Nano-Devices Using DNA, Dr.Ravi Saraf
Synthesis of Chemical Tags, Dr.Ravi Saraf
Solid-like dynamics in ultrathin films of polymeric liquids, Gaurav Singh and Ravi F. Saraf
Solid-like dynamics in ultrathin films of polymeric liquids, Gaurav Singh, Ravi Saraf, and Yves Martin
2002
An Approach to Sequence DNA without Tagging, Sanjun Niu and Ravi Saraf
An approach to sequence DNA without tagging, Sanjun Niu and Ravi Saraf
Nano-Devices Using Block-Copolymers, Dr.Ravi Saraf
Stability of Order in Solvent-Annealed Block Copolymer Thin Films, Dr.Ravi F. Saraf and Sanjun Niu
SPONTANEOUS PLANARIZATION OF NANOSCALE PHASE SEPARATED THIN FILM, Ravi Saraf, Sanjun Niu, and Eric Stumb
Spontaneous planarization of nanoscale phase separated thin film, Ravi Saraf, Sanjun Niu, and Eric Stumb
2001
A direct correlation function for mesomorphic polymers and its application to the ‘smectic’ phase of isotactic polypropylene, Y Cohen and Ravi Saraf
Corrosion and dissolution protection of a conductive silver/polymer composite , Dr.Ravi Saraf
Electrically conductive polymeric materials and use thereof , Dr.Ravi Saraf
Electrode Modification Using an Unzippable Polymer Paste, Dr. Ravi F. Saraf
Ultra High Density Storage Media and Method Thereof, Dr. Ravi F. Saraf
Electrode Modification Using an Unzippable Polymer Paste, Ravi Saraf
Electrode Modification Using an Unzippable Polymer Paste, Ravi Saraf
Lead Free Conductive Composites for Electrical Interconnections, Ravi Saraf
Nano-Devices Using Blockcopolymers, Ravi Saraf
Polycrystalline Conducting Polymers and Precursors thereof having adjustable Morphology and Properties, Ravi Saraf
Radio Frequency (RF) Transponder (TAG) with Composite Antenna, Ravi Saraf
RFID Transponders with Paste Antennas and Flip-Chip Attachment, Ravi Saraf
Ultra High Density Storage Media and Method Thereof, Ravi Saraf
2000
Composition containing a polymer and conductive filler and use thereof , Dr. Ravi Saraf
Electrically conductive polymeric materials and use thereof , Dr.Ravi Saraf
Electrode modification using an unzippable polymer paste , Dr.Ravi Saraf
Enhanced adhesion between a vapor deposited metal and an organic polymer surface exhibiting tailored morphology , Dr.Ravi Saraf
Lead-free interconnection for electronic devices, Dr.Ravi Saraf
Micro goniometer for scanning microscopy , Dr.Ravi Saraf
Ultra high density storage media and method thereof , Dr.Ravi Saraf
1999
Composite comprising a metal substrate and a corrosion protecting layer , Dr.Ravi Saraf
Direct chip attach for low alpha emission interconnect system , Dr.Ravi Saraf
Lead free conductive composites for electrical interconnections , Dr.Ravi Saraf
Lead-free interconnection for electronic devices , Dr.Ravi Saraf
Method for providing discharge protection or shielding , Dr.Ravi Saraf
Method for providing discharge protection or shielding , Dr.Ravi Saraf
Methods of fabricating plasticized, antiplasticized and crystalline conducting polymers and precursors thereof , Dr.Ravi Saraf
Organic-metallic composite coating for copper surface protection , Dr.Ravi Saraf
Polycrystalline conducting polymers and precursors thereof having adjustable morphology and physical properties , Dr.Ravi Saraf
1998
Direct chip attachment (DCA) with electrically conductive adhesives , Dr.Ravi Saraf
Electronic package comprising a substrate and a semiconductor device bonded thereto , Dr.Ravi Saraf
Lead-free interconnection for electronic devices, Dr.Ravi Saraf
1997
Composition containing a polymer and conductive filler and use thereof , Dr.Ravi Saraf
Plasticized, antiplasticized and crystalline conducting polymers , Dr.Ravi Saraf
1996
Fabrication of double side fully metallized plated thru-holes, in polymer structures, without seeding or photoprocess , Dr.Ravi Saraf
Surface-Influenced Phase Separation in Organic Thin Films on Drying, Dr.Ravi F. Saraf, Steve Ostrander, and R. M. Feenstra
1995
Corrosion and Protection of a Conductive Silver Paste, V. Brusic, G. S. Frankel, J. Roldan, and Ravi Saraf
Near Surface Structure of Solvent-free Processed Polyimide Thin Film, Ravi F. Saraf, Christos Dimitrakopoulos, Michael F. Toney, and Steven P. Kowalczyk
1994
Electroless metal adhesion to organic dielectric material with phase separated morphology , Dr.Ravi Saraf
Morphological composite materials formed from different precursors , Dr.Ravi Saraf
Unzippable polymer mask for screening operations , Dr.Ravi Saraf
Laser assisted Pd seeding for electroless plating on SiQ2, A. G. Schrott, B. Braren, and Ravi Saraf
1992
Simulated crystalline structures of aromatic polyimides, Tze Wing Poon, B. David Silverman, Ravi Saraf, Angelo R. Rossi, and Paul S. Ho
1991
Solder/polymer composite paste and method , Dr.Ravi Saraf