# Stan Williams, Video Lecture on the Memristors Discovery

Stan Williams, Video Lecture on “Finding the Missing Memristor”, detailing the discovery and production of HP’s titanium dioxide based memristor, given at the UC San Diego Center for Networked Systems [UCSD CNS]:

Concerning formula for Memristance

dw(t)/dt = mu_v R_on/D i(t)

=> w(t) = mu_v R_on/D (q(t) + q_0) taking only q_0 = 0 solution:

w(t) = mu_v R_on/D q(t)

M(q) = R_on w(t)/D + R_off (1-w(t)/D)

M(q) = mu_v R_on^2/D^2 q(t) + R_off (1 – mu_v R_on/D^2 q(t))

isn’t the term: (mu_v R_on^2/D^2 q(t)) missing in the formula given for M(q) at 14:56, or did I miss something?

In:

The missing memristor found

Dmitri B. Strukov, Gregory S. Snider, Duncan R. Stewart & R. Stanley Williams

published in nature vol 453

it is explained that the term involving the factor (R_on^2) is neglected because R_on << R_off

they have considered Ron<<Roff

so they have neglected the term.

hope u got it