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11-12-2011 19:23:58p://nanomorphware.blogspot.com/

10

New Mem-Resistor Articles onArXivI posted two new articles on mem-resistors on Cornell's ArXiv

website.

Dynamic Systems Model for Filamentary Mem-Resistors

Abstract

A dynamic systems model is proposed describing memory resistors

which include a filament conductive bridge. In this model the system

state is defined by both a dynamic tunneling barrier (associated withthe filament-electrode gap) and a dynamic Schottky barrier

(associated with the electron depletion width surrounding the filament-

electrode gap). A general model is formulated which may be

applicable to many different forms of memory resistor materials. The

frequency response of the model is briefly discussed.

MAY

14

Dynamic SystemsModel for Ionic Mem-Resistors based onHarmonic Oscillation

I posted a new article on ArXiv

proposing a revised model forionic memory resistors (link).

Abstract:

Memristive system models have

previously been proposed to

describe ionic memory resistors.

However, these models neglect

the mass of ions and repulsive

forces between ions and are not

well formulated in terms of

semiconductor and ionic physics.

MAR

26

The Missing Mem-Transistor Found

I recently posted a paper

and a powerpoint presentation I

gave at ICECS 2010 in Athens,

Greece (links below). The paperand presentation attempts to

connect the dots between the

mathematical memristive systems

theory of Chua and Kang with the

earlier memistor developed by

Bernard Widrow and Ted Hoff.

DEC

17

Memristive Devicesand Applications atICECS 2010

This year the IEEE International

Conference on Electronics,

Circuits, and Systems is beingheld in Athens, Greece (link). A

special session has been

organized for memristive devices

and applications and I will be

giving a presentation (abstract

below) discussing the application

of state-space system

analysis to memory transistors in

an analogous fashion to Chua

and Kang's memristive systems

theory of 2-terminal, passive

devices applied to memory

resistive systems.

OCT

31Patent Data ofMemristive Devices(update)

I recently updated an online article

(link) I wrote last year with

additional patent data regarding

the top 20 companies which hold

patents related to memory

resistance materials.

ABSTRACT

In 2008 researchers at Hewlett

Packard announced the physical

realization of a new type of

electronic circuit element called a

memristor (i.e. memory resistor)

which was theoretically predicted

in 1971 by Leon Chua and which

has the capability to form a new

type of “transistor-less” non-

volatile memory.

JUL

14

Op-amps with Memristive Crossbar Feedback

My eleventh patent related to memristive electronics issued today. So far most of the discussion of

memristor-related applications have been focused on non-volatile memory, programmable logic, or

neuromorphics. This patent is more focused on analog electronic applications of memristive materials related to

FPAAs.

JUL

22

3-Terminal Memristive Devices

I recently created a new Google Knol pointing out how floating gate MOSFETs as well as other memory

transistors can be modeled using the memristive systems model of Chua and Kang. (link )

ABSTRACT:

JUN

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The memristive systems theory was originally proposed in the 1970's to provide a mathematical model for

dynamic, memory-dependent electronic devices. Such devices are becoming increasingly important to emerging

technologies involving neuromorphics and adaptive control systems.

7

The mythical memristor

I posted my presentation from ISCAS 2010 on slideshare at this link. The presentation describes why the

memristor is not actually a "4th fundamental circuit element" as claimed and why HPLabs never really

found a memristor but rather an example of a memristive device which has been known for over 50 years.

JUN

3 Memristor Articles on Cornell ArXivA Memadmittance Systems Model for Thin Film Memory Materials

Abstract: In 1971 the memristor was originally postulated as a new non-linear circuit element relating the time

integrals of current and voltage. More recently researchers at HPLabs have linked the theoretical memristor

concept to resistance switching behavior of TiO(2-x) thin films. However, a variety of other thin film materials

exhibiting memory resistance effects have also been found to exhibit a memory capacitance effect.

APR

12

Memristors at ISCAS 2010

This year the IEEE International Symposium on Circuits and Systems (ISCAS 2010) is in Paris, France

(May 30-June 2) and includes the theme of nano-bio circuit fabrics and systems. A special session has

been included on Memristors and Memristive Systems and I have been asked to give a presentation on the

concept of memristive transfer matrices which form the basis for several of my patents.

JAN

5HRL's "brain-like" microcircuitryHRL Labs is one of the recipients of funding for DARPA's SyNAPSE project. A recent press release

(below) discusses their recent efforts in constructing a new type of neuromorphic computer architecture

based on a novel nanoscale device that functions as an artificial synapse which sounds similar to the

memristor.

NOV

29

Memristive transfer functions

Adaptive control is used to adjust the responses of a system as conditions change. However, when

adaptive control systems are based on conventional microprocessor architectures there is an implicit

delay depending upon the processor speed. Memristor electronics offers an alternative approach to adaptive

control capable of integrating memory with parallel processing capabilities.

OCT

31

Knol on History of Memristor Electronics

I wrote a knol discussing the history of Bernard Widrow's memistor (1960), Leon Chua's memristor (1971), HP Labs recent paper on a solid state memristor (2008), and possible future impacts of memristors

available at this link.

AUG

31

Memistors vs. Memristors

I recently came across an interesting technical report published in 1960 describing "memistors" as a new

type of circuit element. Although this memistor is not the same as the memristor which was originally

proposed by Leon Chua in 1971 the similarities are very interesting and the memistor formed the basis for

ADALINE (ADAptive LInear NEurons) circuits which were commercialized briefly by a company called the

Memistor Corporation in the 1960's.

JUL

18

Robotics and Von Neumann's Bottleneck

Last week I attended a conference on Cybernetics in which I presented a paper describing a memristor

crossbar architecture performing an analog variation of the XNOR function to achieve pattern recognitionfor robotics. One of my main points during my talk was that the Von Neumann architecture, which dominates

modern computing, is not efficient to provide robotics with real-time reactions or pattern recognition comparable

to that found in human or other biological species.

JUL

1

Knol on Business Landscape for Memristor Electronics

I recently put together an analysis of some of the companies involved in the development of memristor

electronics available at this link.

JUN

16

Memristor Presentation at Cybernetics Conference

The 6th annual International Conference on Cybernetics and Information Technologies will be held July

10-13 in Orlando, Florida. I will be giving a presentation on the memristor and pattern recognition circuit

architectures based on memristors. The abstract is below.

Abstract:

Pattern recognition solutions based on software are often limited by the speed of data transfer between memory

and processor circuitry.

MAY

Memristors at TechConnect2009MAR

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8 The Nanotech/Cleantech conference and trade show is scheduled this year for Houston, Tx on May 3-7. I

have a poster presentation regarding one of my memristor-based pattern recognition circuit architectures

and a presentation at TechConnect2009 describing my patented technologies.

2

The Missing Memcapacitor Found

Last week Leon Chua published a new paper (available here) describing memcapacitors and

meminductors as new theoretical circuit elements along side the memristor. I posted a knol based on a

new framework for memadmittance and memimpedance I came up with based on Chua's paper.

FEB

24 Memristor Symposium Presentation on LinkedInFor those who use LinkedIn I have posted a powerpoint copy of my presentation at UC Berkeley on my

profile page (http://www.linkedin.com/in/blaisemouttet). I am also working on some memristor-related

presentations and posters for some conferences this summer which I may post there.

JAN

7

Memristor Symposium on YouTube

I recently had an opportunity to discuss some of my ideas on memristor applications at a symposium on

memristors held at UC Berkeley and meet the originators of the memristor concept Leon Chua and Steve

Kang as well as HP researchers Stan Williams and Greg Snider who are developing memristors for RRAM.

Video of the symposium is available on Youtube at this link (my portion starts at 1:25:25).

DEC

18

Memristor and Memristive Systems Symposium

This Friday there is a symposium on memristors at Berkeley during which I will be giving a short talk on

potential applications of memristors in analog electronics.

NOV

31

Nano-Net 2008

At an upcoming conference in Boston (Sept.

AUG

1

Memristor - the key to strong A.I. ?

Hewlett Packard's Information and Quantum Systems Lab recently reported on the physical realization of

a new circuit element that combines the aspects of a resistor and a memory device called a memristor

(see EETimes article). The "memristor" developed by HP is noted as a dual layer of titanium dioxide thin films

that possesses hysteretic behavior so that the resistance can by switched by an order of magnitude of 1000

and which possesses qualities making it analogous to a neuron.

MAY

27

Logicless Computational Architectures using Nanoscale Crossbar Arrays

So far my efforts at attracting companies interested in developing products based on my inventions have

not gone well. While my professors at George Mason University have offered some positive feedback on

some of my ideas the "not invented here" syndrome seems alive and well in many corporations. My current

strategy is to publish some technical papers based on my ideas and use these papers to attract interest and

corporate sponsorship in further development of the technology I am proposing.

APR

13

Interfacing microelectronics and nanoelectronics

My second patent issued yesterday for a system of interconnecting microelectronic circuitry with

nanoelectronic circuitry.

MAR

9

NanoMorphware- the convergence of nanomaterials and morphware

Nanomaterials are molecular or nanoparticulate structures used to enhance mechanical, electrical,optical, or chemical properties. Examples of nanomaterials include carbon nanotubes, nanowires,

quantum dots, and rotaxane molecules. Morphware refers to reconfigurable electronics in which circuit

structures can be dynamically restructured to create different architectures.

MAR

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