首页> 外国专利> Interatomic force measurements using passively drift compensated non-contact in situ calibrated atomic force microscopy—quantifying chemical bond forces between electronic orbitals by direct force measurements at subatomic lateral resolution

Interatomic force measurements using passively drift compensated non-contact in situ calibrated atomic force microscopy—quantifying chemical bond forces between electronic orbitals by direct force measurements at subatomic lateral resolution

机译：使用被动漂移补偿的非接触式原位校准原子力显微镜进行原子间力测量—通过亚原子横向分辨率的直接力测量来量化电子轨道之间的化学键合力

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摘要

Interatomic forces are measured with subatomic lateral resolution by in situ calibrated non-contact and passively thermal drift compensated atomic force microscopy in aqueous or generally liquidous environment; interatomic forces acting between distinct electronic orbitals of front-most tip atom and opposing sample atom can be quantitatively measured with subatomic lateral resolution. Calibration standard is a CaCO₃-crystal, which undergoes a well defined pressure induced phase transition from the calcite to the aragonite crystal lattice structure providing an accurate independent force anchor point for the AFM's force versus distance curve. Furthermore, an independent actual tip-sample-distance d calibration is obtained by directly observing oscillatory (steric) solvation forces originating simply from packing effects of the liquid particles at very small tip-sample separations d.;Key to achieving this extreme sensitivity is operating the AFM in the simple variable deflection mode in the non-contact regime while specific mechanical instrumental design minimizes thermal drifts.

机译：原子间力是通过在水或一般液体环境中通过原位校准的非接触式和被动式热漂移补偿原子力显微镜以亚原子横向分辨率进行测量的;可以用亚原子横向分辨率定量测量最前端原子与相对的样品原子的不同电子轨道之间的原子间力。校准标样是CaCO _{3 晶体，其经历了明确定义的从方解石到文石晶格结构的压力诱导相变，为AFM的力对距离曲线提供了精确的独立力锚点。此外，通过直接观察振荡（空间）溶剂化力获得了独立的实际尖端样品距离d校准，该振荡（空间）溶剂化作用仅源于在很小的尖端样品间隔d处的液体颗粒的堆积效应。在非接触状态下，AFM在简单的变量偏转模式下工作，而特殊的机械仪器设计可将热漂移降至最低。}

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公开/公告号US8443461B2

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公开/公告日2013-05-14

原文格式PDF
申请/专利权人 FRANK MICHAEL OHNESORGE;
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申请/专利号US201113227733
发明设计人 FRANK MICHAEL OHNESORGE;
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申请日2011-09-08
分类号G01N13/16;G01N13/00;G01Q60/24;
国家 US
入库时间 2022-08-21 16:45:56

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