SystemX

Quantum Computing: State of the Art and Industrial Applications [SystemX Seminar]

Topic: 
Quantum Computing: State of the Art and Industrial Applications
Abstract / Description: 

Theoretically, quantum computation has shown a significant asymptotic runtime enhancement in the performance of specific calculations when compared to their classical counterparts. By leveraging entanglement in multipartite quantum systems as a computational resource, it is hoped that quantum computers will find widespread utility in industry. In this talk I will present an overview of quantum computation with a focus on the scientific and technological advancements that could make quantum computers a reality. Special attention will be given to superconducting qubits as a promising hardware platform that can be fabricated by standard CMOS processes.

Date and Time: 
Thursday, October 12, 2017 - 4:30pm
Venue: 
Huang 018

Ultrasound & Breast Cancer Detection [SystemX Seminar]

Topic: 
Ultrasound & Breast Cancer Detection
Abstract / Description: 

Each year it is estimated that over 250,000 women in the United States will be diagnosed with breast cancer and more than 40,000 will die. Breast cancer is the most commonly diagnosed cancer in women and is the second leading cause of cancer death among women. According to the World Health Organization, breast cancer is the most common cancer among women worldwide, claiming the lives of hundreds of thousands of women each year and affecting countries at all levels of modernization. Population based screening has been successful in the early detection of some cancers, including cervical, colon, and breast. However, the success in mortality reduction by screening mammography has been limited in women with mammographically dense tissue. Ultrasound has the potential to be an ideal screening tool because it is relatively inexpensive and requires no injected contrast or ionizing radiation. However, the relatively poor conspicuity of some cancers by hand scanning and the considerable radiologist time necessary limit its use. Automated breast ultrasound (ABUS) allows the radiologist to read the images quickly, and separates image acquisition from interpretation, allowing for efficient screening workflow. Several studies using automated breast ultrasound show that adding ABUS to mammography significantly increases the cancer detection rate compared to mammography alone, and triples the 1 cm-or-less invasive cancers found in dense-breasted women.

Date and Time: 
Thursday, October 19, 2017 - 4:30pm
Venue: 
Huang 018

SystemX Seminar Networks and Mobility

Topic: 
Networks and Mobility: How Wi-Fi, SDN and machine learning are transforming enterprise networks
Abstract / Description: 

Enterprise access networks are going through a fundamental shift away from fixed, desk-centric networking to a mobile-first network architecture. The drivers for such a shift are obvious in our reliance on mobile devices for our daily tasks. In this discussion, we will focus on the unique use cases that are influencing the evolution of enterprise mobility including location-based services. Newer use cases around the intersection of mobility and IOT are also changing how we think of enabling and securing enterprise networks. Traditional policy-based models no longer suffice and need to be augmented with machine learning and AI based models of security. The same ideas are also being applied for proactive service assurance for mission-critical applications – critical in a SaaS-based solution that delivers the network as a service. We will discuss these and many other topics related to mobility in the enterprise.

Date and Time: 
Thursday, October 26, 2017 - 4:30pm
Venue: 
Huang 018

Towards Chip-Scale Power Management: A Circuits Perspective

Topic: 
Towards Chip-Scale Power Management: A Circuits Perspective
Abstract / Description: 

Full integration of power management circuits has been a vision and a goal of the power electronics and integrated circuits communities for many years, if not decades. However, while exponential semiconductor scaling has had a profound impact on data processing, storage, and communications, the same has not been true for circuits that process and delivery energy. On one hand, this is because power delivery circuits are constrained by the size and efficiency of passive components – inductors and capacitors – and thus by Maxwell's equations and fundamental material properties. Yet, a host of applications, spanning portable computing, IOT, automotive, and renewable energy demand small, lighter, cheaper, and more efficient solutions.

This talk will address some of the current trends relating to advances in active and passive components, as well as new circuit architectures and design paradigms that are positioned to open the pathway to mm-scale in monolithically-integrated power conversion. A particular focus will be on the switched capacitor approach – more specifically on switched capacitor circuits and architectures that can be operated in resonant modes or hybridized with a small inductive impedance. These circuits leverage the fundamental advantages of capacitors compared to inductors, such as much higher energy-density and better scalability. Yet, compared to a pure SC approach, the use of a small amount of magnetic energy storage can dramatically improve power-density, efficiency, and add capabilities for variable regulation.

The talk will present a generalized framework for comparison of arbitrary converter topologies based on a charge-multiplier approach. This will be used to highlight which topologies – some well-known, some yet to be explored – have good prospects for high-density integration. Several past integrated circuit prototypes will be highlighted that achieved records for efficiency and power density in bulk CMOS.

Date and Time: 
Thursday, June 8, 2017 - 4:30pm
Venue: 
Allen 101X

A multimodality CMOS cellular interfacing array for holistic cellular characterizations and cell-based drug screening [SystemX Seminar]

Topic: 
A multimodality CMOS cellular interfacing array for holistic cellular characterizations and cell-based drug screening
Abstract / Description: 

Cells are highly complex systems that often exhibit multi-physics responses under external stimulus. To achieve holistic cellular characterizations, it is essential to create interfaces that can provide (1) single-cell resolution, (2) multi-modality interfacing with cells, (3) real-time two-way communication (sensing and actuation), (4) compatibility with high throughput massively parallel operations, and (5) possibility of production at commercial quantities. The nanometer-scale complementary metal-oxide semiconductor (CMOS) process is a potential candidate to realize cell-microelectronics interfaces. Electronics-based computations and signal processing, such as machine learning methods, may drastically relax the requirement on the physical interface and lead to further pixel miniaturization.

In this talk, we will present several fully integrated multi-modality CMOS cellular joint sensor/actuator arrays with multiple sensing modalities in every array pixel to characterize different cell physiological responses, including extracellular voltage recording, cellular impedance mapping, optical detection with shadow imaging and bioluminescence sensing, and thermal monitoring. Each pixel also contains electrical voltage/current excitation for cellular stimulation. These reported CMOS cellular joint sensor/actuator arrays is composed up-to 22k multi-modality pixels on each chip with spatial resolution down to 17um*17um/pixel, achieving single-cell resolution. Multi-modality cellular sensing at the pixel level is supported, which enables holistic cell characterization and concurrent joint-modality physiological monitoring on the same cellular sample. Comprehensive biological experiments with different living cell samples demonstrate the functionality.

Date and Time: 
Thursday, June 1, 2017 - 4:30pm
Venue: 
Allen 101X

Calibration and Dynamic Matching in Data Converters [SystemX Seminar]

Topic: 
Calibration and Dynamic Matching in Data Converters
Abstract / Description: 

In the early days of integrated data converters, calibration was limited to factory adjustments made with programmable fuses and lasers. As integration levels increased, on-chip recalibration outside the factory became possible. Initially, such on-chip calibration operated only in the foreground, interrupting the conversion of the desired input. Later, calibration expanded to allow operation in the background, that is, during normal conversion. Both foreground and background calibration were done at first by making adjustments to the analog circuits. A breakthrough occurred with the realization that analog-to-digital converters with redundancy can be calibrated entirely in the digital domain. This approach shifted design complexity to the digital domain and took advantage of the rapid scaling of digital circuits. Recently, dynamic matching techniques, which have been used effectively in oversampled converters, have been combined with digital background calibration in Nyquist converters. In practice, error-insensitive analog circuit design, calibration, and dynamic matching are all important. The designer's job is to find the best combination of these techniques to meet the requirements of a given application, often focusing on minimizing power dissipation. This talk will describe issues related to all of these techniques.

Date and Time: 
Thursday, May 25, 2017 - 4:30pm
Venue: 
Allen 101X

Engineering Hope with Biomimetic Systems [SystemX Seminar]

Topic: 
Engineering Hope with Biomimetic Systems
Abstract / Description: 

Biomimetic system (neural prosthesis) research has progressed rapidly in the recent years fueled by the unique interdisciplinary efforts fusing engineering, medicine, and biology.  Biomimetic systems will offer viable solution and thus hope to those suffering with neural disorder diseases, which currently do not have curable solutions but potentially affect very large population of people worldwide. This talk will present the works of neural implants in Biomimetic Research Lab (BRL) at UCLA, including 1) to regain the eyesight for the blind; 2) to restore the motor function for the spinal cord injury; 3) to recover the cognition. I’ll particularly discuss about the creation, technical challenge/barrier, clinical trials, and regulatory approval of the retinal prosthesis.  The success of the retinal prosthesis suggests that the technology could be applied to other physiological problems.

Date and Time: 
Thursday, May 18, 2017 - 4:30pm
Venue: 
AllenX

Neuromorphic Computing with Resistive Switching Devices [SystemX Seminar]

Topic: 
Neuromorphic Computing with Resistive Switching Devices
Abstract / Description: 

Neuromorphic computing is a promising concept for low-power, energy-efficient spiking networks with the capability of self-learning, adaptation, and recognition of speech, gesture, and objects. Development of the neuromorphic computing technology is currently facing 2 main barriers: First, there is no comprehensive understanding how the brain really works; and second, there is no consensus about what technology might provide synaptic and neural circuits at the best tradeoff between cost, power consumption, and performance. The resistive switching memory (RRAM) is one of the main contender for neuromorphic components, thanks to its low current operation, small area and tunable resistance. Demonstration of brain-inspired learning feature with RRAM synapses may pave the way for future high performance, low cost neuromorphic processor and brain-in-a-chip.

This talk will report on the recent advances on neuromorphic hardware for unsupervised learning of visual patterns. First, I will describe a RRAM synapse capable of spike-timing dependent plasticity (STDP) with one-transistor/one-resistor (1T1R) structure. Second, I will show the learning and recognition capability of a neuromorphic chip with a microcontroller neuron and an array of RRAM synapses. Learning of single/multiple patterns, tracking of patterns, and recognition will be shown in hardware. These results support RRAM as a promising technology for future neuromorphic processors.

Date and Time: 
Wednesday, May 17, 2017 - 4:30pm
Venue: 
AllenX

Dynamics of Exponentials in Circuits and Systems [SystemX Seminar]

Topic: 
Dynamics of Exponentials in Circuits and Systems
Abstract / Description: 

Astonishing progress in semiconductor devices, circuits, and manufacturing has prompted an unprecedented revolution in electronics. "Things" are getting smarter and more connected, with higher semiconductor content. Smart personal electronics, autonomous systems, and smart factories are prime examples.

These impressive developments are fueled by the power of exponentials: CMOS scaling, efficiency of semiconductor manufacturing, the bandwidth efficiency of communication systems, and total network capacity have all been doubling almost every two years! The sheer scaling of CMOS has dominated the challenges and promises of advanced IC design. Advanced digital-intensive designs count on denser, faster, and cheaper switches. Along the way, analog and RF designs have creatively embraced the challenge of implementing analog topologies on digitally-optimized processes.

The present slowdown of the CMOS scaling trend brings exciting opportunities for "multidimensional innovations" in circuits and systems: The continuing demand for higher performance, in many applications, will further tilt solutions toward creative system and circuit topologies. Many emerging complementary technologies such as MEMS-based sensors and timing references, III-V devices, high-performance SiGe devices, and silicon photonics, will not necessarily integrate with CMOS monolithically. However, they enable opportunities for system repartitioning and new circuit topologies in applications such as sensing, power, high voltage, high-performance RF, and precision timing.

CMOS is here to stay for the foreseeable future! It will simply coexist synergistically with emerging technologies. This talk will discuss opportunities in "multi-dimensional innovation" that will make the future of the field less predictable.....but even more interesting and exciting!"

Date and Time: 
Thursday, May 4, 2017 - 4:30pm
Venue: 
AllenX Auditorium

Secrets of Successful Technology Start-ups that B-schools may have missed [SystemX Seminar]

Topic: 
Secrets of Successful Technology Start-ups that B-schools may have missed
Abstract / Description: 

Start-up companies offer entrepreneurs fulfillment for their innovative product concepts, not to mention recognition and the promise of monetary rewards. However, no matter how well conceived or financed, most perish. Not because they lack great ideas, or aren't passionate enough or committed to their company and its products. Many of these companies succumb to the inexperience of the founding team and the people they subsequently bring aboard. Business schools have certainly helped distill the lessons of many successes and failures into a formulistic guideline for those intent on venturing forward. One wise sage offered, "A short cut to success is to emulate those who have succeeded". Today we will sample some insights and factors that propelled five consecutive Semiconductor startups towards success. All the companies built sizeable businesses and were rewarded by going public in the market place with an IPO.

Date and Time: 
Thursday, April 27, 2017 - 4:30pm
Venue: 
AllenX Auditorium

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