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Two-Dimensional (2D) NMR: Overview

Two-Dimensional (2D) NMR: Overview

The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....

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Updated: Jan 15, 2026

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

2D materials-based next-generation multidimensional photodetectors.

Jiayue Han¹, Ziyi Fu¹, Jingxuan Wei²

¹School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Light, Science & Applications

|October 10, 2025

Summary

This summary is machine-generated.

Two-dimensional (2D) materials enable miniaturized, on-chip optical sensors for multi-dimensional light detection. This review explores their use in advanced sensing technologies for various applications.

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Area of Science:

Optoelectronics
Materials Science
Photonics

Background:

Increasing demand for multi-dimensional light information detection in fields like medical diagnostics, secure communications, and autonomous driving.
Limitations of traditional bulky spectrometers (e.g., Fourier-transform infrared (FTIR)) for miniaturized, on-chip applications.
Emergence of two-dimensional (2D) materials with unique light-matter interactions for novel optical sensing.

Purpose of the Study:

To review the relationship between multi-dimensional information and 2D materials.
To highlight recent advancements in 2D material-based multi-dimensional optical detectors.
To discuss future prospects for on-chip integration of these technologies.

Main Methods:

Review of existing literature on multi-dimensional optical sensing and 2D materials.
Focus on detectors for intensity, time, space, polarization, phase angle, and wavelength.
Discussion of multi-dimensional fusion detection technologies.

Main Results:

2D materials offer potential for constructing high-dimensional spatial mappings of incident light.
Novel ultra-compact multi-dimensional deep optical sensing technologies can be developed using 2D materials.
Advances cover various optical dimensions, enabling comprehensive light analysis.

Conclusions:

2D materials are crucial for developing next-generation miniaturized, on-chip optical sensors.
Future development emphasizes multi-dimensional fusion detection and on-chip integration.
These technologies promise significant advancements in medical diagnostics, secure communications, and autonomous driving.