Erratum: “Measuring the wall depletion length of nanoconfined DNA” [J. Chem. Phys. 149, 104901 (2018)]

In Ref. 1, the wall potential for a silica surface in the Bionano Genomics buffer was incorrectly stated as having a constant value of ψ_wall ≈ 100 meV. Apart from the typographical error in the unit and the sign, the value is also incorrect. The solutions to Eqs. (5), (10), and (11) of Ref. 1 yield the results in Table I.

TABLE I.

Values of the wall potential at the ionic strengths in Table I of Ref. 1.

I (mM)	ψwall (mV)
16.9	−82.7
18.5	−82.0
20.0	−81.4
44.4	−77.3
72.2	−74.3

The value of ψ_wall affects Figs. 2 and 6 of the original manuscript. Corrected figures appear here as Figs. 1 and 2. In the last paragraph of Sec. II of Ref. 1, the statement “the semiflexible chain model of Eq. (6) predicts δ ≈ 11.05λ_D, while the rodlike model of Eq. (7) predicts δ ≈ 4.73λ_D” should be replaced with “the semiflexible chain model of Eq. (6) predicts δ ≈ 10.49λ_D, while the rodlike model of Eq. (7) predicts δ ≈ 4.45λ_D.” The remainder of Ref. 1 and the key conclusions are not affected by this erratum.

FIG. 1.

Corrected version of Fig. 2 of Ref. 1.

FIG. 2.

Corrected version of Fig. 6 of Ref. 1.