Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Structural Properties and Dimensions of Lumber01:21

Structural Properties and Dimensions of Lumber

373
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
373
Softwoods and Hardwoods01:28

Softwoods and Hardwoods

495
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
495
Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

556
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
556
Toughness and Hardness of Aggregate01:22

Toughness and Hardness of Aggregate

576
Toughness and hardness are critical properties of aggregate materials used in concrete, particularly on pavement surfaces and industrial flooring subjected to heavy loads. Toughness is defined as the aggregate's resistance to failure by impact and is measured by the aggregate impact value (AIV). For this, the aggregate impact value test is performed, wherein the impact is delivered by a standard hammer, which falls freely under its own weight onto the aggregates. The aggregates fragment in...
576
Relation Between Tensile Strength and Compressive Strength of Concrete01:30

Relation Between Tensile Strength and Compressive Strength of Concrete

642
Concrete is a fundamental building material, and understanding its strengths is crucial for construction projects. The relationship between its tensile and compressive strengths is intricate, showing that while these strengths are related, they do not increase at the same rate. Tensile strength's growth is slower and is affected by various factors such as the methods used for testing, the size and shape of the specimen, the texture of the aggregate used, and the moisture content of the...
642
Wood Products01:21

Wood Products

281
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
281

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Antifungal Performance and Mechanisms of Carbon Quantum Dots in Cellulosic Materials.

ACS nano·2025
Same author

High-Performance Engineered Composites Biofabrication Using Fungi.

Small (Weinheim an der Bergstrasse, Germany)·2024
Same author

Mycelium Composite with Hierarchical Porous Structure for Thermal Management.

Small (Weinheim an der Bergstrasse, Germany)·2023
Same author

Cross-Scale Synthesis of Organic High-<i>k</i> Semiconductors Based on Spiro-Gridized Nanopolymers.

Research (Washington, D.C.)·2022
Same author

Clinical Relevance and Tumor Growth Suppression of Mitochondrial ROS Regulators along NADH:Ubiquinone Oxidoreductase Subunit B3 in Thyroid Cancer.

Oxidative medicine and cellular longevity·2022
Same author

One-Pot Enzymatic Synthesis and Biological Evaluation of Ganglioside GM3 Derivatives as Potential Cancer Immunotherapeutics.

Journal of medicinal chemistry·2022

Related Experiment Video

Updated: Jan 15, 2026

Fabrication and Design of Wood-Based High-Performance Composites
08:08

Fabrication and Design of Wood-Based High-Performance Composites

Published on: November 9, 2019

13.9K

Decoupling Density-Strength-Toughness in Wood Modification via Molecular Compaction.

Yanan Dong1, Xinyi Chen1, Dan Lu1

  • 1State Key Laboratory of Efficient Production of Forest Resources & MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|January 14, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a molecular compaction strategy using ionic carbon quantum dots (ICQDs) to enhance wood properties. This method improves strength and toughness without significant density increase, offering a sustainable route to advanced bio-based composites.

Keywords:
densityionic carbon quantum dots (ICQDs)molecular compactionstrengthtoughnesswood

More Related Videos

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
09:06

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties

Published on: June 7, 2020

8.5K
Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
08:40

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Published on: May 17, 2020

3.4K

Related Experiment Videos

Last Updated: Jan 15, 2026

Fabrication and Design of Wood-Based High-Performance Composites
08:08

Fabrication and Design of Wood-Based High-Performance Composites

Published on: November 9, 2019

13.9K
The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
09:06

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties

Published on: June 7, 2020

8.5K
Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
08:40

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Published on: May 17, 2020

3.4K

Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Nanotechnology

Background:

  • Conventional wood densification faces limitations in balancing strength, toughness, and density.
  • Developing sustainable, high-performance bio-based materials is crucial for reducing reliance on synthetic polymers.

Purpose of the Study:

  • To introduce a novel

Main Methods:

  • Ionic carbon quantum dots (ICQDs) were introduced into wood cell walls for in situ polymer reorganization.
  • Multiscale structural and spectroscopic analyses were employed to investigate structural changes.
  • The protocol involved solution processing and impregnation compatible with existing manufacturing routes.

Main Results:

  • A 0.25% concentration of ICQDs significantly increased wood strength by 62% and toughness by 30%.
  • Bulk density slightly decreased by 0.4%, indicating molecular compaction rather than mass densification.
  • Enhanced antifungal and UV resistance were observed in the modified wood.
  • Mechanisms included increased cellulose crystallinity, chain orientation, and microfibril packing due to ICQD interactions.

Conclusions:

  • The molecular compaction strategy effectively breaks the density-strength-toughness coupling in wood.
  • ICQDs act as nano-modifiers, promoting desirable structural reorganization within the cell wall.
  • This low-additive, scalable approach provides a general pathway for creating lightweight, durable, and sustainable lignocellulosic composites.