Recently, a team led by Wang Haomin from the Shanghai Institute of Microsystem and Information Technology of the Chinese Academy of Sciences made significant progress in studying the magnetism of zigzag graphene nanoribbons (zGNRs) using a CIQTEK Scanning Nitrogen-vacancy Microscope (SNVM).

Building on previous research, the team pre-etched hexagonal boron nitride (hBN) with metal particles to create oriented atomic trenches and used a vapor-phase catalytic chemical vapor deposition (CVD) method to controllably prepare chiral graphene nanoribbons in the trenches, obtaining ~9 nm wide zGNRs samples embedded in the hBN lattice. By combining SNVM and magnetic transport measurements, the team directly confirmed its intrinsic magnetism in experiments. This groundbreaking discovery lays a solid foundation for the development of graphene-based spin electronic devices. The related research findings, titled "Signatures of magnetism in zigzag graphene nanoribbons embedded in a hexagonal boron nitride lattice," have been published in the prestigious academic journal "Nature Materials".

Graphene, as a unique two-dimensional material, exhibits magnetic properties of p-orbital electrons that are fundamentally different from the localized magnetic properties of d/f orbital electrons in traditional magnetic materials, opening up new research directions for exploring pure carbon-based magnetism. Zigzag graphene nanoribbons (zGNRs), potentially possessing unique magnetic electronic states near the Fermi level, are believed to hold great potential in the field of spin electronics devices. However, detecting the magnetism of zGNRs through electrical transport methods faces multiple challenges. For instance, nanoribbons assembled from the bottom up are often too short in length to reliably fabricate devices. Additionally, the high chemical reactivity of zGNR edges can lead to instability or uneven doping. Furthermore, in narrower zGNRs, the strong antiferromagnetic coupling of edge states can make it difficult to detect their magnetic signals electrically. These factors hinder direct detection of the magnetism in zGNRs.

ZGNRs embedded in the hBN lattice exhibit higher edge stability and feature an inherent electric field, creating ideal conditions for detecting the magnetism of zGNRs. In the study, the team used CIQTEK's Room-Temperature SNVM to observe the magnetic signals of zGNRs directly at room temperature.

Figure 1: Magnetic measurement of zGNR embedded in a hexagonal boron nitride lattice using Scanning Nitrogen-vacancy Microscope

In electrical transport measurements, the fabricated approximately 9-nanometer-wide zGNR transistors demonstrated high conductivity and ballistic transport characteristics. Under the influence of a magnetic field, the device exhibited significant anisotropic magnetoresistance, with a magnetoresistance change of approximately 175 Ω at 4 K, a magnetoresistance ratio of about 1.3%, and this signal persisted even at temperatures as high as 350 K. Hysteresis was only observed under a magnetic field perpendicular to the plane of the zGNRs, confirming its magnetic anisotropy. Through analysis of the variation of magnetoresistance with tilting angle, the researchers found that the magnetic moment is perpendicular to the sample surface. Furthermore, the decrease in magnetoresistance with increasing source-drain bias and temperature revealed the interaction between magnetic response and charge transport and thermal vibrations.

Figure 2: Magnetic transport characteristics of 9-nanometer-wide zGNR devices embedded in hBN

This research, by combining Scanning Nitrogen-vacancy Microscope technology and transport measurements, directly confirmed the existence of intrinsic magnetism in hBN-embedded zGNRs for the first time, providing a possibility for controlling magnetism through an electric field. This work not only deepens the understanding of graphene's magnetic properties but also opens up new pathways for the development of spin electronic devices based on graphene.

Experience the Nano-scale Magnetic Imaging System

CIQTEK invites you to experience the Scanning Nitrogen-vacancy Microscope (SNVM) – a globally leading nano-scale magnetic field imaging system, operating at temperatures of 1.8~300 K with a vector magnetic field of 9/1/1 T, achieving a magnetic spatial resolution of 10 nm, and magnetic sensitivity of 2 μT/Hz1/2.

SNVM is a precision measurement instrument that combines Diamond Nitrogen-vacancy (NV) Optically Detected Magnetic Resonance (ODMR) technology with Atomic Force Microscopy (AFM) scanning imaging technology. It features high spatial resolution, high-sensitivity magnetic imaging, versatile detection capabilities, and non-invasive detection advantages, making it important in areas such as magnetic domain characterization, antiferromagnetic imaging, superconductor characterization, and research on two-dimensional magnetic materials.

Room temperature version of SNVM

Cryogenic version of SNVM

Beyong Nano, a leading innovator in nanotechnology, is set to unveil its groundbreaking model CIQTEK SEM3200 at the prestigious 33rd International Materials Research Congress taking place in Cancun, Mexico.

The Congress, known for bringing together pioneers and visionaries in the field of materials science, provides Beyong Nano with the perfect platform to showcase CIQTEK’s latest technological marvel.

The Scanning Electron Microscope is poised to revolutionize the industry with its advanced features, unparalleled performance, and potential applications across various sectors. 

Visitors to the Beyong Nano booth at the congress can experience firsthand the transformative potential of the model 3200 and engage with the company's team of experts to learn more about its features, applications, and future developments.

Over the conference's three days, we will have the opportunity to engage in in-depth tutorials, keynote sessions, and explore the latest technological advancements in the field of Electron Microscopes. It will follow a Hybrid format, allowing participants from around the world to join us both in person and virtually, ensuring an inclusive and accessible experience for all.

Meet us at ESEM

Date: October 13 - 15, 2025

Location: Theodor Bilharz Research Institute, Egypt

ZHANGZHOU VIRTUE INDUSTRY CO., LTD. is located in Zhangzhou, Fujian—an internationally renowned hub for clock manufacturing. With nearly 20 years of experience in clock R&D, production, sales, and export, the company ships over 6 million clocks annually to more than 30 countries and regions, including the United States, Japan, and Europe, while also holding a significant share in the domestic Chinese market. Through continuous innovation and refined design, ZHANGZHOU VIRTUE is actively contributing to the story of “Zhangzhou Clocks” going global.

Creative Designs, Expanding the Possibilities of Clock Decoration

Tailored for every scenario.
To meet the demands of various home settings, ZHANGZHOU VIRTUE has developed multi-functional clock designs suited for bedrooms, living rooms, and children’s spaces. Products such as mirror clocks, radio alarm clocks, and nightlight clocks combine timekeeping with everyday utility. Aesthetic wall clocks with light-sensing LED features add warmth and comfort to interiors. For children, clocks are designed with plush toys, music boxes, and star projectors to create a playful yet educational experience.

For outdoor use, new models feature water resistance, high-temperature durability, and night visibility, along with functions like thermometers, hygrometers, and barometers integrated into wall clocks.

Breaking the mold with creative shapes.
ZHANGZHOU VIRTUE explores unconventional forms by incorporating elements like frying pans, bicycles, birdcages, and wristwatches into its clock designs—dramatically enhancing the decorative value of wall clocks. The company also integrates Chinese cultural symbols such as the twelve zodiac animals, blue-and-white porcelain, lion dances, and ink painting to launch its “Guochao” (New Chinese Style) series—blending Eastern tradition with global trends and winning over younger consumers.

ZHANGZHOU VIRTUE Bicycle Clock
Image Source: Alibaba International Store

Green Innovation, Adding an Eco-Friendly Touch to Timekeeping

As sustainability becomes a global trend, ZHANGZHOU VIRTUE is actively embracing green product development:

• Using eco-friendly materials like PLA biodegradable plastics and natural wood;

• Continuously improving energy-saving technologies, such as enhanced light sensing, motion detection, and automatic light adjustment in LED wall clocks.

For example, the Moonlight Series integrates human motion and ambient light sensors to automatically turn on when someone approaches and adjust brightness based on lighting conditions—delivering both practicality and energy efficiency.

ZHANGZHOU VIRTUE Flip Night Light Alarm Clock
Image Source: Guangzhou Cross-Border E-commerce Expo (CCEF)

Global Design Collaborations: Bringing Zhangzhou Timepieces to the World

To stay aligned with overseas trends and better meet global consumers’ expectations, ZHANGZHOU VIRTUE partnered as early as 2005 with U.S. designer Francisco Lee, establishing a premium watch design team that launched the “Virtue” Watch Series, which has earned recognition in the international fashion watch market.

Driving Innovation: Enhancing the Value of Every Second

Professional R&D capabilities.
Over the years, ZHANGZHOU VIRTUE has built a strong in-house R&D team composed of designers, engineers, and skilled technicians. The team focuses on developing high-precision, low-power, and multi-functional timepieces. Among the most innovative achievements is the self-developed radio-controlled movement with smart light sensing, which incorporates radar, wireless, voice control, AI recognition, and ambient light technology. It features three lighting modes—always-on, radar-based, and sound-activated—and is now under national patent application.

Academic-industry collaboration.
As the leading entity behind the Wisetime Valley Innovation Base, ZHANGZHOU VIRTUE conducts regular joint R&D efforts through its partnerships with local research institutions and pilot labs—focusing on new breakthroughs in clock materials, performance, and craftsmanship. Through collaboration with Huaqiao University, the company is transforming more research outcomes into market-ready product innovations.

Virtuetime Valley Innovation Hub
Image Source: Virtuetime Valley Official WeChat

Manufacturing Strength & Global Client Trust

Automated manufacturing to lower cost and boost quality.
Automation is key to upgrading traditional manufacturing. ZHANGZHOU VIRTUE has invested in top-tier equipment including Swiss high-speed CNC centers, precision engraving machines, and automated painting lines, significantly enhancing production efficiency while maintaining cost control. To ensure consistent product quality, the factory is equipped with RoHS automatic testing systems and vacuum leak testers, laying a solid foundation for high-volume OEM production and bulk orders.

End-to-end service system.
From design and mold development to manufacturing, assembly, and laboratory testing, ZHANGZHOU VIRTUE provides a complete service chain, enabling rapid response to custom orders and reliable, high-quality delivery. The company is an approved OEM supplier for world-renowned brands like Disney, Universal Studios, Hello Kitty, and Playboy, and maintains long-term partnerships with leading retailers such as Walmart, Target, Big Lots, Aldi, Auchan, Costco, and Marks & Spencer, exporting products to over 30 countries and regions including the U.S., Japan, and Australia.

ZHANGZHOU VIRTUE Automated Factory
Image Source: Guangzhou Cross-Border E-commerce Expo (CCEF)

Exploring New Paths Through Cross-Border E-Commerce

With cross-border e-commerce becoming a major growth driver in China’s foreign trade, ZHANGZHOU VIRTUE is actively expanding into this space with its own branded products:

• Responding to local government initiatives, the company has participated in cross-border e-commerce expos across China to grow its online customer base and order volume.

• In collaboration with government initiatives between Zhangzhou and the Philippines, the company is poised to participate in Southeast Asia–focused e-commerce livestreaming bases, opening new markets in the region.

At the same time, ZHANGZHOU VIRTUE is expanding through Alibaba International and its independent e-commerce platform, leveraging its extensive export experience to optimize product offerings and gradually increase the share of e-commerce in its total business.

Conclusion

Innovation, design, quality, and affordability—these are the hallmarks of tongyuanclock As Zhangzhou clocks make their mark on the global stage, the company’s journey offers a compelling example of how traditional Chinese manufacturing can thrive through creativity, excellence, and a forward-looking global mindset.