相关实验视频
Updated: Feb 7, 2026

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.7K
利用工作功能驱动的旋转转向来控制双金属合金上的HCl解离中的量子状态
Tianhui Liu1,2,3, Kaixin Meng1
1School of Sciences, Great Bay University Dongguan 523000 China liutianhui@gbu.edu.cn.
Chemical science
|February 6, 2026
概括
旋转运动极大地增强了双金属表面的化学反应,为控制催化提供了一种新的方法. 这一发现揭示了如何分子旋转,而不仅仅是振动,可以引导化学反应性针对性催化剂设计.
科学领域:
- 不同质的催化剂.
- 表面科学是一门科学.
- 量子动力学就是量子动力学.
背景情况:
- 异质核分子的离散化学吸收是异质催化中的关键.
- 与振动效应不同,通过旋转激发控制反应性仍然是一个挑战.
研究的目的:
- 研究旋转激发在双金属表面HCl解离中的作用.
- 开发用于催化中的旋转增强的预测性设计原则.
主要方法:
- 六维量子动力学模拟.
- 在Ag/Pt{111}和Cu/Pt{111}双金属表面上建模HCl解离.
主要成果:
- 观察到前所未有的旋转增强,在Ag/Pt上有约225的疗效,在Cu/Pt上有约56的疗效.
- 发现由工作功能差异驱动的界面电荷转移创造了一个独特的潜在能源景观.
- 建立了一个定量原则:旋转效率尺度具有工作功能的差异,并根据表面应变进行调制.
结论:
- 旋转效应取决于全球潜在能量表面的地形,与过渡状态局部化机制不同.
- 旋转可以精确地引导催化反应,使得状态选择性催化剂设计成为可能.
- 这项工作推进了设计具有向功能的催化剂的新范式.
相关概念视频
Quantum Numbers
50.8K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
50.8K
The Quantum-Mechanical Model of an Atom
58.4K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
58.4K
Transfer Function in Control Systems
1.6K
The transfer function is a fundamental concept in the analysis and design of linear time-invariant (LTI) systems. It offers a concise way to understand how a system responds to different inputs in the frequency domain. It serves as a bridge between the time-domain differential equations that describe system dynamics and the frequency-domain representation that facilitates easier manipulation and analysis.
To derive the transfer function, consider a general nth-order linear time-invariant...
To derive the transfer function, consider a general nth-order linear time-invariant...
1.6K
Dissociative Disorders
603
Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
603
Dissociative Amnesia
618
Dissociative amnesia is a complex psychological condition that manifests as an inability to recall personal information, often tied to traumatic or stressful events. Unlike general amnesia, individuals with this condition retain the ability to perform routine activities and procedural tasks, such as operating a phone or navigating public transportation, yet experience profound gaps in autobiographical memory. These lapses may encompass significant life events, such as suicide attempts or...
618
Kinematic Equations for Rotation
843
In mechanics, when one observes a rigid body in rotational motion with constant angular acceleration, it is possible to establish equations for its rotational kinematics. This process resembles how linear kinematics are dealt with in simpler motion studies.
For instance, imagine a point A on a rigid body engaged in circular motion. The translational velocity of this particular point can be calculated by taking the time derivatives of the displacement equation, which essentially measures the...
For instance, imagine a point A on a rigid body engaged in circular motion. The translational velocity of this particular point can be calculated by taking the time derivatives of the displacement equation, which essentially measures the...
843

