1. General introduction 2. The separation of nuclear and electronic motion 3. The electronic hamiltonian 4. Interactions arising from nuclear magnetic and electric moments 5. Angular momentum theory and spherical tensor algebra 6. Electronic and vibrational states 7. Derivation of the effective hamiltonian 8. Molecular beam magnetic and electric resonance 9. Microwave and far-infrared magnetic resonance 10. Pure rotational spectroscopy 11. Double resonance spectroscopy Appendices.

https://physicstoday.scitation.org/doi/pdf/10.1063/1.1878342

Rotational Spectroscopy of Diatomic Molecules

State-selected rubidium-87 molecules were created at rest in a dilute Bose-Einstein condensate of rubidium-87 atoms with coherent free-bound stimulated Raman transitions. The transition rate exhibited a resonance line shape with an extremely narrow width as small as 1.5 kilohertz. The precise shape and position of the resonance are sensitive to the mean-field interactions between the molecules and the atomic condensate. As a result, we were able to measure the molecule-condensate interactions. This method allows molecular binding energies to be determined with unprecedented accuracy and is of interest as a mechanism for the generation of a molecular Bose-Einstein condensate.

Molecules in a Bose-Einstein condensate

Butterfly Effect is a real-time-rendered short developed in a collaboration among Unity Technologies, Passion Pictures, and NVIDIA. During development, many traditional offline CG techniques were adopted for real-time rendering: physically based shading, Catmull-Clark subdivision, texture-space diffusion for subsurface scattering, pyroclastic noise-based volumetric effects, etc.

Butterfly effect

The invention discloses an intelligent terminal-based somatosensory flight operation and control system and terminal equipment. The somatosensory flight operation and control system comprises an airborne flight control system, communication relay equipment and the intelligent terminal, wherein the intelligent terminal is used for acquiring attitude information of the intelligent terminal, generating a flight instruction according to the attitude information, and sending the flight instruction to the airborne flight control system via the communication relay equipment; the attitude information at least comprises a yaw angle of the intelligent terminal; the flight instruction at least carries the yaw angle for indicating the airborne flight control system to control an aircraft where the airborne flight control system is located to fly at the yaw angle; and the airborne flight control system is used for controlling flight of the aircraft according to the flight instruction. Thus, a multi-rotor aircraft is convenient to operate and control, and beyond visual range flight is facilitated.

Intelligent terminal-based somatosensory flight operation and control system and terminal equipment

The present invention is suitable for the unmanned aerial vehicle field, and provides a system of matching somatosensory operation to realize virtual flight. The system comprises a wearable sensor, a remote controller, an unmanned aerial vehicle and a visual device, wherein an unmanned aerial vehicle controller is arranged inside the unmanned aerial vehicle, the unmanned aerial vehicle is equipped with a panorama camera, and an instruction converter is arranged inside the remote controller or the unmanned aerial vehicle. According to the present invention, the wearable sensor captures the human body action and converts the human body action into a corresponding flight instruction, after receiving the flight instruction, the unmanned aerial vehicle controller controls the motion track of the unmanned aerial vehicle, the panorama camera real-timely obtains images and finally transmits back to a virtual reality (VR) visual device, and the VR visual device carries out the three dimensional reduction and reconstruction on the images to realize the VR flight effects for players. According to the present invention, the wearable sensor can capture the fine action change of the human bodies, can determine the actions accurately, and converts the actions into the instructions capable of being identified by the unmanned aerial vehicle correspondingly in a protocol conversion manner, so that the system is very strong in flight interactivity, and brings the brand new experience for the unmanned aerial vehicle flight.

System of matching somatosensory operation to realize virtual flight

The invention discloses a motion-sensing follow-type flight control system and method. The motion-sensing follow-type flight control system comprises a remote controller and an aircraft. The remote controller comprises a power supply system, an acceleration sensor, a digital-analog converter, a microcontroller and a radio transmission module. The aircraft comprises an information receiving module, an acceleration sensor, a gyroscope sensor, a barometer sensor, a data processing module and a control driving module. The remote controller obtains the acceleration magnitude of the hand through the acceleration sensor, collects motion data of the hand, and processes the motion data through the digital-analog converter. Then, the microcontroller calculates the acceleration change of the aircraft according to the acceleration change of the hand, and transmits a corresponding control instruction to the aircraft through the radio transmission module, so that the aircraft follows motions of the hand to cope and magnify the control motions guided by the hand, the aircraft is guided to fly in various corresponding flight paths by following the motions of the hand, and the immersive feeling is brought to an operator.

Motion-sensing follow-type flight control system and method

A variational algebraic method used to study the full vibrational spectra and dissociation energies of some specific diatomic systems

A molecular based kinetic study on the thermal decomposition of poly-α-methyl styrene

Since the order in the diatomic potential (or vibrational energy) expansion may be different from state to state, the algebraic method (AM) proposed by Sun et al. (J Mol Spectrosc 2002; 215: 93–105) is modified to adapt to the individual nature of different energy expansions by changing an original fixed order to a flexible one. The modified AM with a flexible order can be used to deal with the possible “butterfly effect” that may happen in spectroscopic computations, and it is applied to study the full vibrational spectra { E υ } and the dissociation energies De for L 7 i 2 − 2 3 Σ g + , K 2 − 3 1 Π g , Cs 2 − 3 3 ∑ g + , KLi − X 1 ∑ + , and RbCs − X 1 Σ + electronic states. The results not only reproduce the known experimental vibrational energies, but also correctly predict the dissociation energies and all unknown energies that have not been obtained for these electronic states using the original AM. These facts demonstrate that the modified AM are good for many more diatomic systems by using the proper order of each corresponding diatomic state.

Jia Fu

Papers

Motion-sensing follow-type flight control system and method

A variational algebraic method used to study the full vibrational spectra and dissociation energies of some specific diatomic systems

A molecular based kinetic study on the thermal decomposition of poly-α-methyl styrene

Dealing with the hidden unphysical constraint and the butterfly effect in spectrum computations

Studies on the Q-branch spectral lines of high-lying rovibrational transitions of diatomic system.