Learn more about UC TechAlerts – Subscribe to categories and get notified of new UC technologies

Browse Category: Semiconductors > Other

Categories

[Search within category]

Carbon Nanotube based Variable Frequency Patch-Antenna

Researchers at UCI have developed a patch antenna constructed from carbon nanotubes, whose transmission frequency can be tuned entirely electronically. Additionally, the antenna can be made operable in the microwave to visible frequency regime by simply varying the device dimensions and composition.

Advanced On-Chip Thermal Sensing

Prof. Albert Wang and his colleagues from the University of California, Riverside have developed a novel in-hole PN diode thermal sensor that can be readily made in commercial IC production processes. The technology is advantageous over current thermal sensors because the in-hole diode is designed to take up a minimal amount of space while it ensures high-resolution thermal sensing. With the new concept validated experimentally, the new in-hole diode sensor can be a potential solution to achieving full-chip dynamic thermal mapping with a fine spatial resolution for accurate real-time chip-scale thermal management for future ICs. Fig 1: TCAD simulation shows desired I-V-T behaviors for the new in-hole diode thermal sensor across a wide temperature range.

Advanced Electrostatic Discharge Protection

Prof. Albert Wang and colleagues from the University of California, Riverside have developed an effective and reliable method for designing an internally distributed CDM ESD protection network. This technology works by having the ESD protection network distributed inside the silicon substrate. Existing CDM ESD protection methods use external pad-based ESD protection to channel discharge in a pathway known as “from-external-to-internal” which leads to CDM ESD failures. This technology is superior to current methods because the discharge is directed “from internal-to-external” and solves the fundamental issues that cause existing CDM ESD protection methods to fail. Fig 1: Illustration of the pad-based global ESD protection network on an IC chip where ESD protection devices are connected to each pad to ensure an ESD discharging path between pads on a chip.

Vibration Sensing and Long-Distance Sounding with THz Waves

UCLA researchers in the Department of Electrical and Computer Engineering have developed a terahertz (THz) detector that utilizes the micro-Doppler effect to detect vibrations and long-distance sounds.

Compact Ion Gun for Ion Trap Surface Treatment in Quantum Information Processing Architectures

Electromagnetic noise from surfaces is one of the limiting factors for the performance of solid state and trapped ion quantum information processing architectures. This noise introduces gate errors and reduces the coherence time of the systems. Accordingly, there is great commercial interest in reducing the electromagnetic noise generated at the surface of these systems.Surface treatment using ion bombardment has shown to reduce electromagnetic surface noise by two orders of magnitude. In this procedure ions usually from noble gasses are accelerated towards the surface with energies of 300eV to 2keV. Until recently, commercial ion guns have been repurposed for surface cleaning. While these guns can supply the ion flux and energy required to prepare the surface with the desired quality, they are bulky and limit the laser access, making them incompatible with the requirements for ion trap quantum computing.To address this limitation, UC Berkeley researchers have developed an ion gun that enables in-situ surface treatment without sacrificing high optical access, enabling in situ use with a quantum information processor.

Quality Factor Enhancement For Highly-Selective Miniaturized Bandpass Filters

UCLA researchers in the Department of Electrical and Computer Engineering have developed narrowband and high-selective filters with zero-insertion loss.

Iii-N Transistor With Stepped Cap Layers

A new structure for III-N transistors that is able to maintain a high breakdown and operating voltage while improving the gain of the device.

Techniques for Creation and Insertion of Test Points for Malicious Circuitry Detection

Researchers led by Dr. Potkonjak from the UCLA Department of Computer Science have developed a technique to detect hardware Trojans in integrated circuits.

Digital Spur Cancellation Of Fractional Frequency Synthesizer

UCLA researchers in the Department of Electrical and Computer Engineering have developed a digital spur cancellation technique for frequency synthesizers used in clock synchronization.

An Improved On-Chip Crosstalk Noise Model

Researchers led by Jason Cong from the Department of Computer Science at UCLA have developed an improved on-chip crosstalk noise model to optimize integrated circuit design.

Selective Deposition Of Diamond In Thermal Vias

UCLA researchers in the Department of Materials Science & Engineering have developed a new method of diamond deposition in integrated circuit vias for thermal dissipation.

Multiple-absorbers offer increased solar conversion efficiencies for artificial photosynthesis

   Researchers at UCI have, for the first time, developed a method for modeling the efficiencies of artificial photosynthetic devices containing multiple light absorbers. As these devices more closely parallel naturally occurring photosynthesis, they offer higher performance than standard single-absorber devices.

Methods And Systems For Magnetoelectronic Elements And Arrays

UCLA researchers in the Department of Electrical Engineering have developed a magnetoelectric memory array, which uses a crossbar architecture to achieve high density.

A Read-Disturbance-Free Nonvolatile Content Adressable Memory

UCLA researchers in the Department of Electrical Engineering have developed read-disturbance-free content addressable memory (CAM) using voltage controlled magneto-electric tunnel junctions (MEJs).

Voltage-Controlled Magnetic Tunnel Junction Switch

UCLA researchers in the Department of Electrical Engineering have developed a voltage-controlled magnetic tunnel junction switch that can switch the magnetization of a magnetic bit (i.e., in a free layer) from one state to another using an applied voltage.

Body Voltage Sensing Based Short Pulse Reading Circuit For STT-RAM

UCLA researchers in the Department of Electrical & Computer Engineering have invented a novel circuit design that performs high speed and reliable data reading operations for resistive device-based memory applications.

Multiple-Bits-Per-Cell Voltage-Controlled Magnetic Memory

UCLA researchers in the Department of Electrical and Computer Engineering have developed a new random access memory read/write method that achieves new levels of speed, scalability, and memory density.

Flexible Organic Transistors with Controlled Nanomorphology

A simple strategy for controlling the nanomorphology of semiconducting polymers on surface-modified polymer dielectrics as well as a technique for fabricating flexible OFETs. 

RASP: FPGA/CPLD Technology Mapping And Synthesis Package

Researchers led by Jason Cong from the Computer Science Department at UCLA have developed a general synthesis and mapping system for SRAM-based FPGAs.

Controlling Magnetization Using Patterned Electrodes on Piezoelectrics

UCLA researchers in the Department of Materials Science and Engineering have developed a novel piezoelectric thin film that can control magnetic properties of individual magnetic islands.

Synaptic Resistor With Signal Processing, Memory, And Learning Functions

Researchers led by Yong Chen from the Department of Mechanical and Aerospace Engineering have developed an artificial synapse for neuromorphic chips that have integrated logic, memory, and learning capabilities.

Anti-Ferromagnetic Magneto-Electric Spin-Orbit Read Logic

UCLA researchers in the department of Electrical Engineering have developed a novel magetoelectric device for use as a spin transistor.

Tunnel Junction Devices with Optically-Pumped III-Nitride Layers

A method of replacing standard electrical injection of the quantum wells in semiconductor devices with optically-pumping, by coupling a short-wavelength electrically pumped active region to a long-wavelength optically pumped region via a tunnel junction.

  • Go to Page: