diff --git a/PS1/q3.m b/PS1/q3.m
index c084830..54c231c 100644
--- a/PS1/q3.m
+++ b/PS1/q3.m
@@ -14,19 +14,55 @@ gamma_sum = gamma_1 + gamma_2;
 
 % Channel energy levels, varying between -0.25eV and 0.25eV
 epsilon = linspace(-0.25, 0.25, 101);
+depsilon = epsilon(2) - epsilon(1);
 
 % Energy grid
 E = linspace(-1, 1, 501);
+dE = E(2) - E(1);
 
 % Contact fermi functions
-f_1 = 1 ./ (1 + exp((E - mu)./kBT1));
-f_2 = 1 ./ (1 + exp((E - mu)./kBT2));
+f_1 = 1 ./ (1 + exp((E - mu)./kBT_1));
+f_2 = 1 ./ (1 + exp((E - mu)./kBT_2));
 
 % Iterate through channel energy levels
 for n = 1:length(epsilon)
     % Compute energy level density functions - integral normalized to unity
-    D = (gamma./(2*pi))./((E-cal_E(count)).ˆ2+((gamma./2).ˆ2));
+    D = (gamma_sum./(2*pi))./((E-epsilon(n)).^2+((gamma_sum./2).^2));
+    %D = (gamma./(2*pi))./((E-epsilon(n)).ˆ2+((gamma_sum./2).ˆ2));
     D = D./(dE*sum(D));
+    
+    % Compute number of channel electrons
+    
+    N(n) = dE*sum( ((gamma_1./gamma_sum).*f_1 + (gamma_2./gamma_sum).*f_2).*D );
 
+    % Compute the current in Amps; factor of q to resolve units
+
+    I(n) = q*(q/hbar)*dE*sum((f_1 - f_2).*D.*gamma_1.*gamma_2./gamma_sum);
+
+    %plot f_1 - f_2 and D/2
+
+    if (abs(epsilon(n) + 0.05) <= depsilon / 2) & (epsilon(n) <= 0)
+        figure(3);
+        h = plot(f_1-f_2, E, 'x', D/2500, E, 'k-');
+        set(gca, 'Fontsize', [18]);
+        axis([-0.01 0.02 -1 1]);
+        xlabel('f1(E) - f2(E), D(E)/2500');
+        ylabel('ENERGY  [eV]');
+        legend('f1-f2', 'D(E)/2500');
+        title('CHANNEL LEVEL = -0.05 eV');
+    elseif (abs(epsilon(n)) <= depsilon / 2) & (epsilon(n) <= 0)
+        figure(4);
+        h = plot(f_1-f_2, E, 'x', D/2500, E, 'k-');
+        set(gca, 'Fontsize', [18]);
+        axis([-0.01 0.02 -1 1]);
+        xlabel('f1(E) - f2(E), D(E)/2500');
+        ylabel('ENERGY  [eV]');
+        legend('f1-f2', 'D(E)/2500');
+        title('CHANNEL LEVEL = 0 eV');
+    end
 
 end
+
+
+% Final plots
+figure(1);
diff --git a/PS1/q3_0V.png b/PS1/q3_0V.png
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diff --git a/PS1/q3_current.png b/PS1/q3_current.png
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diff --git a/PS1/q3_ne.png b/PS1/q3_ne.png
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