In the article "Supramolecular Chemistry on Water-Soluble Carbon Nanotubes for Drug Loading and Delivery" (ACS Nano 2007, 1, 50–56), there are two errors that need correction. The units for the molar extinction coefficient should be changed from $ M \cdot cm^{-1} $ to $ M^{-1} \cdot cm^{-1} $. The molar extinction coefficient of doxorubicin should be $ 1.05 \times 10^{4} M^{-1} \cdot cm^{-1} $, not $ 1.05 \times 10^{5} M^{-1} \cdot cm^{-1} $. In the text, on page 54, the last paragraph should be revised to reflect these changes. The concentrations of single-walled carbon nanotubes (SWNTs) were determined using absorbance at 808 nm with molar extinction coefficients of $ 7.9 \times 10^{6} M^{-1} \cdot cm^{-1} $ for PL-PEG-SWNT and $ 4.0 \times 10^{6} M^{-1} \cdot cm^{-1} $ for PEG-OXNT. The concentration of doxorubicin (DOX) loaded onto SWNTs was measured using the absorbance peak at 490 nm, with a molar extinction coefficient of $ 1.05 \times 10^{4} M^{-1} \cdot cm^{-1} $. In the article "Hetero-apertured Micro/Nanostructured Ordered Porous Array: Layer-By-Layered Construction and Structure-Induced Sensing Parameter Controllability" (ACS Nano 2009, 3, 2697–2705), Figure 8b was incorrect and should be replaced with a new figure. In the article "Quantum Dot Peptide Biosensors for Monitoring Caspase 3 Proteolysis and Calcium Ions" (ACS Nano 2010, 4, 5487–5497), there is a typo in the author name "Loukov," which should be corrected to "Loukou."In the article "Supramolecular Chemistry on Water-Soluble Carbon Nanotubes for Drug Loading and Delivery" (ACS Nano 2007, 1, 50–56), there are two errors that need correction. The units for the molar extinction coefficient should be changed from $ M \cdot cm^{-1} $ to $ M^{-1} \cdot cm^{-1} $. The molar extinction coefficient of doxorubicin should be $ 1.05 \times 10^{4} M^{-1} \cdot cm^{-1} $, not $ 1.05 \times 10^{5} M^{-1} \cdot cm^{-1} $. In the text, on page 54, the last paragraph should be revised to reflect these changes. The concentrations of single-walled carbon nanotubes (SWNTs) were determined using absorbance at 808 nm with molar extinction coefficients of $ 7.9 \times 10^{6} M^{-1} \cdot cm^{-1} $ for PL-PEG-SWNT and $ 4.0 \times 10^{6} M^{-1} \cdot cm^{-1} $ for PEG-OXNT. The concentration of doxorubicin (DOX) loaded onto SWNTs was measured using the absorbance peak at 490 nm, with a molar extinction coefficient of $ 1.05 \times 10^{4} M^{-1} \cdot cm^{-1} $. In the article "Hetero-apertured Micro/Nanostructured Ordered Porous Array: Layer-By-Layered Construction and Structure-Induced Sensing Parameter Controllability" (ACS Nano 2009, 3, 2697–2705), Figure 8b was incorrect and should be replaced with a new figure. In the article "Quantum Dot Peptide Biosensors for Monitoring Caspase 3 Proteolysis and Calcium Ions" (ACS Nano 2010, 4, 5487–5497), there is a typo in the author name "Loukov," which should be corrected to "Loukou."