2018年12月7日 · Understanding the interactions between a tip apex and a target atom or molecule is crucial for the manipulation of individual molecules with precise control by using scanning tunnelling microscopy (STM) and atomic force microscopy. Herein, we demonstrate the manipulation of target CO molecules on a …

2018年10月4日 · The CO tip experiences a larger repulsive interaction from the pair than from the monomer. CO-tip manipulation is useful for not only enhancing the spatial resolution of STM/AFM, but also for fabricating a two-dimensional CO molecular network or developing a better understanding of catalytic oxidation processes.

Atomic force microscopy (AFM) is used to investigate surface structures by measuring the interaction force between the tip and sample. Non-contact AFM (NC-AFM) that incorporates a qPlus sensor...

2020年8月24日 · Since then, CO-terminated tips (CO tips) have been widely applied in AFM experiments to study molecular adsorbates 3,4,5,6,7,8,9 and various types of surfaces and adsorbates with atomic...

2017年1月11日 · For molecular structure elucidation by AFM, the CO tips are most popular and all AFM data shown in this Review have been acquired using CO-functionalized tips. Scanning tunnelling...

2015年10月22日 · Noncontact atomic force microscopy (nc-AFM) employing a CO-functionalized tip displays dramatically enhanced resolution wherein covalent bonds of polycyclic aromatic hydrocarbon can be imaged. Employing real-space pseudopotential first-principles calculations, we examine the role of CO in functionalizing the nc-AFM tip.

2018年4月9日 · Here we show that, due to the covalently bound configuration of the terminal oxygen atom, this copper oxide tip (CuOx tip) has a high structural stability, allowing not only a quantitative...

2017年8月9日 · Experimentally observed constant-height current and frequency shift images of a CO molecule on a Cu(111) surface by a CO-functionalized tip for various tip sample distances at mV. The tip position is distant in (a) and (b), middle in (c) and (d), and near in (e) and (f).

2014年4月23日 · We investigate insulating islands grown on Cu (100) by means of combined scanning tunneling microscopy and atomic force microscopy with two vastly different tips: a bare metal tip and a CO-terminated tip. We use scanning tunneling microscopy data as proposed by Choi, Ruggiero, and Gupta to unambiguously identify atomic positions.

2009年8月28日 · We demonstrate imaging of molecules with unprecedented atomic resolution by probing the short-range chemical forces with use of noncontact atomic force microscopy. The key step is functionalizing the microscope’s tip apex with suitable, atomically well-defined terminations, such as CO molecules.