Deoxyribonucleic acid (DNA) sequencing provides the opportunity to advance prosperity by helping individuals or developing precision medications. The potential application of a zigzag (10, 0) AlN nanotube (AlNNT) as a DNA sequencer is studied herein by using B3LYP-gCP-D3 density functional model chemistry. The energy released after adsorption of DNA nucleobases by the AlNNT lies in the following order: guanine (G, 1.22 eV) > cytosine (C, 1.12) ≈ thymine (T, 1.09) ≫ adenine (A, 0.71). Energy decomposition analysis reveals that the nucleobases that include an oxygen atom (G, C, and T) interact covalently with the AlNNT while the A base adsorbs via a π–π stacking interaction. The adsorption of DNA nucleobases on the AlNNT clearly increases its electrical conductivity, and the sensing response of the AlNNT toward G, C, T, or A is predicted to be 1339, 608, 523, or 248. Thus, an AlNNT could be applied to selectively sense G, C, T, and A, which is conducive to determining the nucleobase sequence of DNA. Short recovery times are also obtained for desorption of the DNA nucleobases.

脱氧核糖核酸（DNA）测序可通过帮助个人或开发精密药物来促进繁荣。本文通过使用B3LYP-gCP-D3密度泛函模型化学研究了曲折（10，0）AlN纳米管（AlNNT）作为DNA测序仪的潜在应用。AlNNT吸附DNA核碱基后释放的能量按以下顺序排列：鸟嘌呤（G，1.22 eV）>胞嘧啶（C，1.12）≈胸腺嘧啶（T，1.09）≫腺嘌呤（A，0.71）。能量分解分析表明，包括氧原子（G，C和T）的核碱基与AlNNT共价相互作用，而A碱基通过π-π堆积相互作用吸收。DNA核碱基在AlNNT上的吸附明显增加了其电导率，并且AlNNT对G，C，T，或A被预测为1339、608、523或248。因此，可以将AlNNT应用于选择性地感测G，C，T和A，这有助于确定DNA的核碱基序列。对于DNA核碱基的解吸，还可以获得较短的恢复时间。