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Difference from Background: Limit of Detection

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Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

Nanobolometer with ultralow noise equivalent power.

Roope Kokkoniemi¹, Joonas Govenius¹, Visa Vesterinen^1,2

¹QCD Labs, QTF Centre of Excellence, Department of Applied Physics, Aalto University, P.O. Box 13500, 00076 Aalto, Finland.

Communications Physics

|March 27, 2025

Summary

This summary is machine-generated.

Researchers developed a novel nanobolometer, achieving unprecedented low noise and high speed. This advancement offers significant potential for applications in quantum technology and terahertz photon counting.

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Area of Science:

Physics
Instrumentation
Quantum Technology

Background:

Bolometers have a long history of diverse applications, from sensors to astronomy.
There is a continuous demand for bolometers with improved speed and reduced noise for fundamental research and new applications.

Purpose of the Study:

To demonstrate a nanobolometer with significantly lower noise equivalent power (NEP) and faster response time.
To explore the potential of this nanobolometer for advanced applications.

Main Methods:

Fabrication and characterization of a novel nanobolometer.
Measurement of noise equivalent power (NEP) and time constant.

Main Results:

Achieved a noise equivalent power (NEP) of 20 zW/√Hz, an order of magnitude lower than previous bolometers.
Demonstrated a time constant of 30 μs at 60 zW/√Hz, over an order of magnitude faster than other low-noise bolometers.
Indicated a calorimetric energy resolution of 0.3 zJ (h × 0.4 THz).

Conclusions:

The developed nanobolometer represents a significant advancement in bolometer technology.
Its extremely low noise and high speed make it a promising candidate for quantum technology and terahertz photon counting.