A5069119612- Advanced biosensing and bioanalysis techniques
- Carbon Nanotubes in Composites
- Advancements in Battery Materials
- Molecular Junctions and Nanostructures
- Nanopore and Nanochannel Transport Studies
- Supramolecular Self-Assembly in Materials
- Supercapacitor Materials and Fabrication
- Advanced Polymer Synthesis and Characterization
- Quantum-Dot Cellular Automata
- biodegradable polymer synthesis and properties
- Extraction and Separation Processes
- Antimicrobial agents and applications
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Polydiacetylene-based materials and applications
- Advanced battery technologies research
- Heat Transfer and Optimization
- DNA and Nucleic Acid Chemistry
- Conducting polymers and applications
- Dendrimers and Hyperbranched Polymers
- 3D Printing in Biomedical Research
- RNA Interference and Gene Delivery
- Additive Manufacturing and 3D Printing Technologies
- Graphene research and applications
- Advanced Sensor and Energy Harvesting Materials
IBM Research - Almaden
2010-2021
IBM (United States)
2012
California Institute of Technology
2006-2009
Direct-write 3D printing enables the fabrication of three-dimensional objects via extrusion from a nozzle. Stimuli responsive materials that shear-thin are well-suited as inks for these systems. Poly(isopropyl glycidyl ether)-block-poly(ethylene oxide)-block-poly(isopropyl ether) ABA triblock copolymers were synthesized using controlled ring-opening polymerization to afford dual stimuli-responsive polymers respond both shear forces and temperature. These demonstrated form hydrogels in water....
DNA bricks build nanotube transistors Semiconducting carbon nanotubes (CNTs) are an attractive platform for field-effect (FETs) because they potentially can outperform silicon as dimensions shrink. Challenges to achieving superior performance include creating highly aligned and dense arrays of well removing coatings that increase contact resistance. Sun et al. CNTs by wrapping them with single-stranded handles binding into origami formed array channels precise intertube pitches small 10.4...
With the increased prevalence of antibiotic-resistant infections, there is an urgent need for innovative antimicrobial treatments. One such area being actively explored use self-assembling cationic polymers. This relatively new class materials was inspired by biologically pervasive host defense peptides. The action both synthetic polymers and naturally occurring peptides believed to be complemented their three-dimensional structure. In effort evaluate shape effects on materials, triblock...
A cholesterol-functionalized aliphatic cyclic carbonate monomer, 2-(5-methyl-2-oxo-1,3-dioxane-5-carboxyloyloxy)ethyl carbamate (MTC-Chol), was synthesized. The organocatalytic ring-opening polymerization of MTC-Chol accomplished by using N-(3,5-trifluoromethyl)phenyl-N′-cyclohexylthiourea (TU) in combinations with bases such as 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and (−)-sparteine, kinetics monitored. By mPEG-OH the macroinitiator, well-defined amphiphilic diblock copolymers...
We have determined the thermal resistance for transferring heat between individual single-walled carbon nanotube devices and solid substrates. Using sapphire comparing our results to previous obtained from SiO2, we find that is dominated by interfacial rather than spreading of diffusing into substrate. Our are in agreement a recent model nanoscale constrictions. suggest relatively short contact lengths (∼10–30nm) typical should be sufficient transfer efficiently nanotubes, underscoring...
Ultrathin film preparations of single-walled carbon nanotube (SWNT) allow economical utilization properties in electronics applications. Recent advances have enabled production micrometer scale SWNT transistors and sensors but scaling these devices down to the nanoscale, improving coupling SWNTs other nanoscale components, may require techniques that can generate a greater degree geometric order than has thus far been achieved. Here, we introduce linker-induced surface assembly, new...
The authors use elastomeric polydimethylsiloxane substrates to strain single-walled carbon nanotubes and modulate their electronic properties, with the aim of developing flexible materials that can sense local strain. They demonstrate micron-scale nanotube devices be cycled repeatedly through strains as high 20% while providing reproducible transduction via device resistance. also compress individual find they undergo an undulatory distortion a characteristic spatial period 100–200nm, in...
Synthetic porogens provide an easy way to create porous structures, but their usage is limited due synthetic difficulties, process complexities and prohibitive costs. Here we investigate the use of bacteria, sustainable naturally abundant materials, as a pore template. The bacteria require no chemical synthesis, come in variable sizes shapes, degrade easier are approximately million times cheaper than conventional porogens. We fabricate free standing multiwalled carbon nanotube (MWCNT) films...
Miniature batteries can accelerate the development of mobile electronics by providing sufficient energy to power small devices. Typical microbatteries commonly use thin-film inorganic electrodes based on Li-ion insertion reaction. However, they rely complicated synthesis method inorganics containing many elements. Graphene, one atomic layer thick carbon sheet, has diverse physical and chemical properties is compatible with conventional micron-scale device fabrication. Here, we study vapor...
Abstract not Available.
Abstract not Available.