Lima E R A, Biscaia E C, Boström M, Tavares F W
Escola de Química, Universidade Federal do Rio de Janeiro, Cidade UniversitAria, CEP 21949-900, Rio de Janeiro, RJ, Brazil.
Langmuir. 2007 Jul 3;23(14):7456-8. doi: 10.1021/la700690g. Epub 2007 May 31.
We investigate the effect of ion-specific potentials on the force between a nanoprobe attached to a cantilever tip, and a charged surface. The probe is treated as a spherical nanoparticle with constant charge. A modified Poisson-Boltzmann equation in bispherical coordinates is used to address this problem in a more quantitative way. We predict that the ion-specific series of measured forces depend on the sign and magnitude of surface charge densities.
我们研究了离子特异性电势对附着在悬臂尖端的纳米探针与带电表面之间作用力的影响。该探针被视为具有恒定电荷的球形纳米粒子。采用双球坐标系下的修正泊松 - 玻尔兹曼方程以更定量的方式解决此问题。我们预测，所测量力的离子特异性序列取决于表面电荷密度的符号和大小。
