Chapter 25
Perspectives
Abstract The notion of multifield-driven bond oscillation dynamics and the theorydriven phonon spectrometrics have enabled quantitative information on the bond
relxation under perturbation and bond transformation by chemical reaction with everdeep and consistent insight into the perturbation-relaxation-property correlation of
liquid and solid crystals. Progress evidences the essentiality of bonding and electronic dynamics and the spectrometric engineering in uncovering the physics and
chemisrty behind the processes of matter and life. Coupling of the intramolecular
bonding and the intermolecular O:H attractive, H↔H and O:⇔:O repulsive nonbonding interactions would lead to promising breakthroughs in molecular science
and engineering.
25.1 Attainments
The presented notion of multifield bonding dynamics and the theory-driven phonon
spectrometrics have enabled the ever-deep and consistent understanding about
perturbation-relaxation-property correlation of liquid and solid crystals. The following summarize the major progress:
(1) The LBA approach and the multifield bond oscillation have reconciled the effect
of P, T, CN, and charge injection on the bond relaxation and property evolution
of the liquid and solid crystals. A stimulus mediates the properties by bond
relaxation from one equilibrium to another.
(2) Crystal size reduction creates three types of phonons unseen in the bulk – sizereduction induced E 2g (TO mode) blueshift, A 1g (LO) redshift, and the emerging
of the LFR mode in the THz frequencies. Nanostructures prefer the core-shell
configuration and the performance of bonds in the skin shell dictates the size
dependency of liquid and solid crystals.
(3) The phonon frequency shift, bandgap, and elastic modulus follows a Debye thermal decay, which offers information of the atomic cohesive energy E coh and the
Debye temperature; mechanical compression stiffens the phonons nonlinearly
and provides information of biding energy density E den and elastic modulus.
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2020
C. Q. Sun, Electron and Phonon Spectrometrics,
https://doi.org/10.1007/978-981-15-3176-7_25
497
Perspectives
Abstract The notion of multifield-driven bond oscillation dynamics and the theorydriven phonon spectrometrics have enabled quantitative information on the bond
relxation under perturbation and bond transformation by chemical reaction with everdeep and consistent insight into the perturbation-relaxation-property correlation of
liquid and solid crystals. Progress evidences the essentiality of bonding and electronic dynamics and the spectrometric engineering in uncovering the physics and
chemisrty behind the processes of matter and life. Coupling of the intramolecular
bonding and the intermolecular O:H attractive, H↔H and O:⇔:O repulsive nonbonding interactions would lead to promising breakthroughs in molecular science
and engineering.
25.1 Attainments
The presented notion of multifield bonding dynamics and the theory-driven phonon
spectrometrics have enabled the ever-deep and consistent understanding about
perturbation-relaxation-property correlation of liquid and solid crystals. The following summarize the major progress:
(1) The LBA approach and the multifield bond oscillation have reconciled the effect
of P, T, CN, and charge injection on the bond relaxation and property evolution
of the liquid and solid crystals. A stimulus mediates the properties by bond
relaxation from one equilibrium to another.
(2) Crystal size reduction creates three types of phonons unseen in the bulk – sizereduction induced E 2g (TO mode) blueshift, A 1g (LO) redshift, and the emerging
of the LFR mode in the THz frequencies. Nanostructures prefer the core-shell
configuration and the performance of bonds in the skin shell dictates the size
dependency of liquid and solid crystals.
(3) The phonon frequency shift, bandgap, and elastic modulus follows a Debye thermal decay, which offers information of the atomic cohesive energy E coh and the
Debye temperature; mechanical compression stiffens the phonons nonlinearly
and provides information of biding energy density E den and elastic modulus.
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2020
C. Q. Sun, Electron and Phonon Spectrometrics,
https://doi.org/10.1007/978-981-15-3176-7_25
497