Optical frequency comb, composed of discrete spectral lines, derives the name from its presenting a uniform and comb-like distribution of signals in the frequency domain. Frequency dimension has its significance as emphasized by Nobel laureate Arthur Schawlow’s quote, “Never measure anything but frequency”. The optical frequency comb significantly enhances the precision of freque...

Halide perovskite solar cells are currently deemed as the most promising third-generation photovoltaic technology, opening vast opportunities for transformative development in the solar cell industry. In recent years, the efficiency of halide perovskite cells has been constantly improved, however, there remains a gap compared to the theoretical limits. Therefore, enhancing the efficiency of perovs...

Under the guidance of Assistant Professor Feng Jicheng in the School of Physical Science and Technology (SPST), a research team has recently made a significant contribution to the fabrication of complex architectures at the nanoscale. Their findings, published in the journal Advanced Functional Materials in March and featured as the journal’s back cover, introduced an innovative 3D nano...

Perovskite is currently the most promising new type of solar cell material. Perovskite-based ultra-efficient solar cells have been rated as one of the “Top 10 Breakthrough Technologies of 2024” by MIT Technology Review. The commonly used lead perovskite solar cells have achieved high photoelectric conversion efficiency, but they still have shortcomings in terms of environmental friendliness and ...

Visiting Assistant Professor Zhou Xinan in SPST is awarded the 2023 ICTP Prize, a prestigious international prize from the International Centre for Theoretical Physics (ICTP). Established in 1964 by Nobel Laureate Abdus Salam in Trieste Italy, ICTP is a renowned international scientific hub and a UNESCO-affiliated organization that is committed to promoting science in the underdeveloped world. The...

**This article is provided by Prof. Feng Jicheng, and is originally published on the Materials Community of Springer Nature on August 16High-performance electronics requires billions of transistors, but their downsizing and interconnections, and materializations impose technological limits. Three-dimensional (3D) printing at nanoscale can probably provide a solution. Convergence between ...

Erythritol is a C4 sugar alcohol that naturally exists in some vegetables, fruits, mushrooms, and fermented foods. Because of its stable physical and chemical properties, low price, high biological safety, and the fact that it cannot be metabolized by the human body, erythritol is widely used in the food industry as a natural sugar substitute (such as in sugar-free sodas). Due to the lack of eryth...

The rosy clouds of dawn, the sunset glow, the hazy moonlight and the rainbow are all forms of light found in nature.From an optical point of view, natural light, which does not directly show polarization, is isotropic. When natural light passes through a linear polarizer, it becomes linearly polarized. Through a quarter-wave plate, the linearly polarized light then becomes circularly polarized. Ci...

The discovery of topological states and topological phase transitions has reshaped our understanding of physics and materials over the past few years. The topological transition from a normal insulator to a topological insulator (TI) can be realized by chemical or mechanical pressure. The topological transition was first predicted and demonstrated in Tl-based chalcogenides TlBi(S1−xSex)2 by i...

Organic π-conjugated molecules (OCMs) have become promising candidates in the fields of organic catalysts, bio-imaging/sensing, and organic optoelectronics. Recently, introducing main-group elements (such as B, N, S, Si, P, etc.) into molecular backbones has become a powerful strategy for fine-tuning photo-physics, redox characteristics, molecular organizations, and optoelectronic functionalities...

Rich and tunable physical properties could emerge from the moiré superlattice constructed from two-dimensional multilayers. The magic-angle twisted bilayer graphene (MATBG) is one of the most distinguished examples, which exhibits unconventional superconductivity, correlated physics, ferromagnetism, and nontrivial topology far beyond monolayer graphene. Recently, magic-angle twisted trilayer grap...

                                  Coronoids are polycyclic aromatic compounds formed by annulated benzene rings that enclose a cavity in the center. They can be regarded as nanoporous graphene molecules whose electronic properties are critically dependent on the size and topology of their outer and inner peri...

A critical factor in next-generation energy storage systems is that all-solid-state lithium-metal batteries are expected to provide better safety and higher energy density than traditional lithium batteries which contain liquid materials inside which can be unsafe, flammable and hard to recycle. The significant difference in all-solid-state lithium-metal batteries is the solid electrolytes which r...

In natural silk spinning process, the molecular assembly synergistically realizes the complex and ordered mesoscopic hierarchies. Inspired by this, SPST Ling Shengjie's group cooperated with Yao Yuan's group from ZJU-Hangzhou Global Scientific and Technological Innovation Center, to combine the “molecular-supramolecular assembly” and “phase transition-induced mechanical training” ...