Related Experiment Video
Updated: Feb 4, 2026

Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium
Published on: December 16, 2011
Soft-Lithographic Patterning of Luminescent Carbon Nanodots Derived from Collagen Waste
AshokKumar Meiyazhagan, Amir Aliyan, Anumary Ayyappan
1Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School , University of Texas Health Science Center at Houston , Houston , Texas 77030 , United States.
Abstract:
Luminescent carbon dots (Cdots) synthesized using inexpensive precursors have inspired tremendous research interest because of their superior properties and applicability in various fields. In this work, we report a simple, economical, green route for the synthesis of multifunctional fluorescent Cdots prepared from a natural, low-cost source: collagen extracted from animal skin wastes. The as-synthesized metal-free Cdots were found to be in the size range of ∼1.2-9 nm, emitting bright blue photoluminescence with a calculated Cdot yield of ∼63%. Importantly, the soft-lithographic method used was inexpensive and yielded a variety of Cdot patterns with different geometrical structures and significant cellular biocompatibility. This novel approach to Cdot production highlights innovative ways of transforming industrial biowastes into advanced multifunctional materials which offer exciting potential for applications in nanophotonics and nanobiotechnology using a simple and scalable technique.
Related Concept Videos
The Carbon Cycle
Carbon Skeletons
Fibril-associated Collagen
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
Fixed Action Patterns
Carbonation Shrinkage
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
Carbon-dioxide Fixation

