As process technology scales, the importance of material and architectural innovation on interconnect performance will continue to increase. Graphene has…
We fabricate PbS colloidal quantum-dot (QD)-based solar cells using a fullerene derivative as the electron transporting layer (ETL). A thiol…
The goal of this project is to study the potential of storing energy in the elastic deformation of carbon nanotubes…
The efficiency of solar cells is controlled by the energy gap of the constituent materials. The “single junction limit” is…
Organic light-emitting diodes (OLEDs) and other optoelectronic applications employ molecular organic solids due to their high luminance, efficiency, and contrast…
We are investigating the fabrication and magnetic properties of magnetic logic and memory devices. These consist of multilayer magnetoresistive ring-shaped…
Gas sensors play a vital role in public health and safety, industrial process control, and reduction of toxic emissions into the environment. Conductometric gas sensors based on semiconducting metal oxide (SMO, e.g., ZnO, TiO2, and SnO2) thin films are of high interest in many applications due to high sensitivity, small size, and simplicity of measurement
Diffraction gratings and other periodic patterns have long been important tools in research and manufacturing. Diffraction occurs due to the…
The recent development of a hybrid organic/colloidal quantum dot light emitting device (QD-LED) consisting of a single monolayer of quantum…
Electrodes formed from nanowire arrays have been shown to improve charge transport across a wide range of energy generation and…
The vapor-liquid-solid mechanism for growth of single-crystal whiskers and wires was originally discovered in the 1960s, but it has gained…
Silicon nanowires (SiNWs) have attracted considerable attention due to potential applications arising from their quasi-one-dimensional structure. SiNWs, along with other…
Scanning-electron-beam lithography (SEBL) commonly uses voltages between 10-100 keV. Higher voltages result in distributed proximity effects, lower sensitivity, and a higher…
Due to their inherently small size and their high sensitivity to strain, carbon nanotube (CNT) based sensors offer the potential…
Scanning helium-ion-beam lithography (HIBL) can fabricate patterns with sub-10-nm half-pitch. The interaction volume of a beam with a sample is…
The use of magnetic forces to improve fluidic self-assembly of micro-components has been investigated using Maxwell 3D to model the…
High current field emission arrays (FEAs) have garnered much interest in the areas of displays and microwave devices. While most…
We designed and fabricated superconducting nanowire single-photon detectors (SNSPDs) with nano-optical antennae to reduce the length of the nanowire needed…
There is a need for microscale vacuum pumps that can be readily integrated with other MEMS and electronic components at…
Templated block copolymer (BCP) self-assembly is attractive for fabricating few-nanometer-scale structures at high throughput ((I. Bita, J.K. Yang, Y.S. Jung,…
Strain-induced cracking in thin films is a major concern during processing and can also lead to reliability issues. We are…
Periodic nanostructures have proven their usefulness in the fabrication of diffraction gratings, photonic crystals, magnetic domains in recording media, nanochannels…
In this work, we demonstrated the patterning of Au features on <111> B GaAs substrates by galvanic displacement and metal…
Patterned templates can guide the self-assembly of nanoparticles into ordered arrays. Our motivation in pursuing templated self-assembly is to develop…
Poly(methyl methacrylate) (PMMA) is an important resist for electron-beam lithography. For low doses, it is a positive resist; for high…
Vertically-aligned carbon nanotube (CNT) arrays are grown on a moving substrate, demonstrating continuous growth of nanoscale materials with long-range order….
Catastrophic structural failures are the cause of many physical and personal losses every year, with prevention estimated at billions of…
Manufacturing of future nanodevices and systems will require accurate means to pattern, assemble, image, and measure nanostructures. Unfortunately, the current…
Traditional methods of fabricating gratings, such as diamond-tip ruling, electron- and laser-beam scanning, or holography, are generally very slow and…
Self-organized macromolecular materials can provide an alternative pathway to conventional lithography for the fabrication of devices on the nanometer scale….
A new method for developing hydrogen silsesquioxane (HSQ), a negative electron-beam resist with demonstrated 9-nm-pitch resolution, is presented, avoiding the…
Devices made utilizing zinc oxide (ZnO) nanowires have been developed for a variety of different applications including tactile sensors, flex…
A key challenge for putative industrial users of thermal nanoimprint lithography (NIL) is to design mask patterns that can be…
The continued demand for very wideband communications and the increased need for wireless channel capacity have led to the exploration…
Research efforts on MEMS-based analytical instrumentation have focused on the development of rugged gas chromatography and mass spectrometry (GC/MS) systems…
Micro vacuum-pump technology, which refers to vacuum-pump systems with miniaturized functional parts, currently attracts a noticeable interest from researchers due…
Carbon nanotube (CNT) composites are promising new materials for structural applications thanks to their mechanical and multifunctional properties. We have…
The study of colloidal nanocrystals (NCs) that are optically active in the near-infrared is of great importance, from both a…
An on-chip electronic-photonic synergy is driven by a continuing demand for better power efficiency, increased functionality, enhanced performance, improved reliability,…