Harvard College

University of Pennsylvania

New York University

Ritesh Agarwal

Charles M Lieber

David G Grier

Xiangfeng Duan

Yu Huang

Yael Roichman

Kosta Ladavac

Guihua Yu

Mukut Mitra

Yeonwoong Jung

A phase change memory device that utilizes a nanowire structure. Usage of the nanowire structure permits the phase change memory device to release its stress upon amorphization via the minimization of reset resistance and threshold resistance.

Phase change memory devices with relaxed stress

A system and method for manipulating and processing nanowires in solution with arrays of holographic optical traps. The system and method of the present invention is capable of creating hundreds of individually controlled optical traps with the ability to manipulate objects in three dimensions. Individual nanowires with cross-sections as small as 20 nm and lengths exceeding 20 &#x3bc;m are capable of being isolated, translated, rotated and deposited onto a substrate with holographic optical trap arrays under conditions where single traps have no discernible influence. Spatially localized photothermal and photochemical processes induced by the well-focused traps can also be used to melt localized domains on individual nanowires and to fuse nanowire junctions.

System and method for processing nanowires with holographic optical tweezers

This invention generally relates to nanotechnology and nanoelectronics as well as associated methods and devices. In particular, the invention relates to nanoscale optical components such as electroluminescence devices (e.g., LEDs), amplified stimulated emission devices (e.g., lasers), waveguides, and optical cavities (e.g., resonators). Articles and devices of a size greater than the nanoscale are also included. Such devices can be formed from nanoscale wires such as nanowires or nanotubes. In some cases, the nanoscale wire is a single crystal. In one embodiment, the nanoscale laser is constructed as a Fabry-Perot cavity, and is driven by electrical injection. Any electrical injection source may be used. For example, electrical injection may be accomplished through a crossed wire configuration, an electrode or distributed electrode configuration, or a core/shell configuration. The output wavelength can be controlled, for example, by varying the types of materials used to fabricate the device. One or more such nanoscale lasers may also be integrated with other nanoscale components within a device.

Nanoscale coherent optical components

Growing community of inventors

Philadelphia, PA, United States of America

Ritesh Agarwal