Solution
Graphene-
Based
Field emission
Cold-Cathodes
The problem
Traditional cathodes
are inefficient,
energy-intensive,
and short-lived
Traditional cathodes are inefficient,
energy-intensive, and short-lived

Limitations
X-ray sources require miniaturization, improved efficiency, and enhanced reliability.
X-ray sources require enhanced reliability, improved efficiency and miniaturization.

Limitations
X-ray sources require miniaturization, improved efficiency, and enhanced reliability.

Inefficiency
High-energy consumption and short reduce performance in electric propulsion systems.

Inefficiency
High-energy consumption and short reduce performance in electric propulsion systems.

Overheating
Traditional cathodes generate excessive heat, limiting their lifespan and long-term stability.
Traditional cathodes generate excessive heat, limiting long-term operation.

Overheating
Traditional cathodes generate excessive heat, limiting their lifespan and long-term stability.
Solution
Graphene-Based
Field emission
Cold-Cathodes
Solution
Graphene-Based
Field emission
Cold-Cathodes
Solution
Graphene-Based
Field emission
Cold-Cathodes
Techology Innovation
Techology
Innovation
СoldXray provide durable, scalable and energy-efficient solution
ColdXray cathodes solve
these challenges with a scalable, durable, and energy-efficient solution



No heating elements
Eliminates excessive power consumption, enabling more efficient and stable operation.


No heating elements
Eliminates excessive power consumption, enabling more efficient and stable operation.

Highly durable
Highly
durable
Resistant to extreme conditions, ensuring long-term reliability in space and medical applications.

Highly durable
Resistant to extreme conditions, ensuring long-term reliability in space and medical applications.

Eco-friendly
Eco-
friendly
Developed with sustainable CVD manufacturing, reducing environmental impact.

Eco-friendly
Developed with sustainable CVD manufacturing, reducing environmental impact.

Compact & scalable
Compact
& scalable
Designed for seamless integration across various industries, from satellites to X-ray systems.

Compact & scalable
Designed for seamless integration across various industries, from satellites to X-ray systems.

Digitally controllable
Enables precise operation and adaptability for different use cases.

Digitally controllable
Enables precise operation and adaptability for different use cases.

Instant Start-Up
Instant
Start-Up
Activates immediately without warm-up time, improving efficiency and operational readiness.

Instant Start-Up
Activates immediately without warm-up time, improving efficiency and operational readiness.
Transforming
Aerospace
& Medical Tech
Transforming
Aerospace &
Medical Tech
Transforming
Aerospace
& Medical Tech

Aerospace
Aerospace
ColdXray’s graphene-based cold cathodes are transforming space propulsion by providing highly efficient electron emission for electric thrusters. Our technology enhances satellite longevity, reduces energy consumption, and ensures stable, reliable operation in extreme space conditions.
ColdXray’s graphene-based cold cathodes are transforming space propulsion by providing highly efficient electron emission for electric thrusters. Our technology enhances satellite longevity, reduces energy consumption, and ensures stable, reliable operation in extreme space conditions.
WORKING PROTOTYPES
PATENT APPLICATION

Aerospace
ColdXray’s graphene-based cold cathodes are transforming space propulsion by providing highly efficient electron emission for electric thrusters. Our technology enhances satellite longevity, reduces energy consumption, and ensures stable, reliable operation in extreme space conditions.
WORKING PROTOTYPES
PATENT APPLICATION

Medical & Industrial
Medical & Industrial
Our graphene-based cathodes revolutionize X-ray generation by eliminating the need for traditional filament heating, making X-ray systems more compact, durable, and energy-efficient. This innovation enhances imaging in healthcare, security screening, and industrial non-destructive testing.
WORKING PROTOTYPES
PATENT PENDING

Medical & Industrial
Our graphene-based cathodes revolutionize X-ray generation by eliminating the need for traditional filament heating, making X-ray systems more compact, durable, and energy-efficient. This innovation enhances imaging in healthcare, security screening, and industrial non-destructive testing.
WORKING PROTOTYPES
PATENT PENDING
Key Benefits
Key Benefits
Higher efficiency
Our graphene cold cathodes cut power use, extending operational life and boosting performance.
Longer lifespan
Built for durability, our cathodes withstand extreme environments, ensuring extended operational life and lower maintenance costs.
Cost reduction
By increasing efficiency and durability, our graphene cold cathodes significantly cut down operational and manufacturing costs.
Higher efficiency
Our graphene cold cathodes cut power use, extending operational life and boosting performance.
Longer lifespan
Built for durability, our cathodes withstand extreme environments, ensuring extended operational life and lower maintenance costs.
Cost reduction
By increasing efficiency and durability, our graphene cold cathodes significantly cut down operational and manufacturing costs.
Higher efficiency
Our graphene cold cathodes cut power use, extending operational life and boosting performance.
Longer lifespan
Built for durability, our cathodes withstand extreme environments, ensuring extended operational life and lower maintenance costs.
Cost reduction
By increasing efficiency and durability, our graphene cold cathodes significantly cut down operational and manufacturing costs.
Higher efficiency
Our graphene cold cathodes cut power use, extending operational life and boosting performance.
Longer lifespan
Built for durability, our cathodes withstand extreme environments, ensuring extended operational life and lower maintenance costs.
Cost reduction
By increasing efficiency and durability, our graphene cold cathodes significantly cut down operational and manufacturing costs.
Heating
=0°C
Operates at low temperatures, ensuring stability and efficiency.
Lifetime
>10 000 hours
Long lifespan reduces maintenance and replacement costs.
Inertia
<10⁻⁹ seconds
Our solutions save our clients an average of 3 hours of work per day.
Brightness
~10 mA/cm2
Delivers stable and efficient electron emission for various uses.
Some Numbers
Some Numbers
Some Numbers
Heating
Heating
=0°C
=0°C
=0°C
Operates at low temperatures, ensuring stability and efficiency.
Lifetime
Lifetime
>10 000
hours
>10 000
hours
Long lifespan reduces maintenance and replacement costs.
Lifetime
>10 000
hours
Long lifespan reduces maintenance and replacement costs.
Inertia
Inertia
<10⁻⁹
seconds
<10⁻⁹
seconds
Our solutions save our clients an average of 3 hours of work per day.
Inertia
<10⁻⁹
seconds
Our solutions save our clients an average of 3 hours of work per day.
Brightness
Brightness
~10
mA/cm2
Delivers stable and efficient electron emission for various uses.
Brightness
~10
mA/cm2
Delivers stable and efficient electron emission for various uses.
Our Partners
Our Partners
ColdXray trusted by Leading Institutions,
Incubators, and Industry Innovators
Meet our Team
Meet our Team
Three PhD on board, seasoned entrepreneurs,
and industry-backed innovation driving
the future of graphene technology
Contact us
Office:
Joensuu,
North Karelia,
Finland
Local time:
20:07:15