Multi-Unit Differential Scanning Calorimeter for High Sample Throughput
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Solution Overview
Problem
Conventional differential scanning calorimeters (DSCs) have low sample throughput and require extensive cleaning between measurements, limiting their ability to analyze multiple samples efficiently due to cross-contamination concerns.
Innovation Solution
A high-throughput DSC instrument design featuring a thermal substrate with multiple DSC units, each with a reference and sample platform, and a temperature control module that allows for simultaneous analysis of multiple samples using diffusion-bonded thermally conductive layers and disposable sample chips to eliminate cleaning needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional DSC instruments analyze a single sample during an instrument measurement period, then measurement precision is maintained, but sample throughput is limited
Solution Approach 1:
The instrument is divided into multiple independent DSC units (first DSC unit, second DSC unit, etc.), each capable of analyzing a separate sample simultaneously. This segmentation allows the system to process multiple samples in parallel, dramatically increasing throughput from one sample at a time to multiple samples concurrently, while each unit maintains independent measurement precision
Solution Approach 2:
Multiple DSC units are combined and integrated onto a single instrument platform with shared control systems and a common temperature control plate. This merging approach enables simultaneous analysis of multiple samples while consolidating resources, achieving high throughput without proportionally increasing overall instrument complexity
2Reliability
If calorimeter components are cleaned between measurements to reduce cross-contamination, then measurement reliability is improved, but analysis time increases
Solution Approach 1:
The invention employs disposable sample chips that are discarded after a single use, eliminating the need for cleaning between measurements. Each chip is used once to maintain measurement reliability and prevent cross-contamination, then disposed of, thereby completely removing the time loss associated with cleaning operations while maintaining high measurement standards
Solution Approach 2:
The system implements a discard approach for sample chips after single-use measurements. Rather than attempting to clean and reuse components, the disposable chips are discarded after their analytical function is complete, and fresh chips are used for subsequent measurements, ensuring reliability without time-consuming cleaning cycles
3Productivity
If multiple DSC units are integrated on a single instrument, then sample throughput increases, but device complexity increases
Solution Approach 1:
The temperature control plate serves multiple functions: it acts as a thermal substrate for multiple DSC units, provides temperature control for all units simultaneously, and functions as a structural integration platform. This multi-functionality allows the instrument to handle multiple samples in parallel while using shared components, increasing throughput without proportionally increasing overall complexity
Solution Approach 2:
Multiple DSC units share common infrastructure including the temperature control plate, control systems, and measurement electronics. By merging these resources across multiple analysis channels, the instrument achieves high throughput capability while consolidating rather than duplicating complex components, thereby managing device complexity more efficiently
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the simultaneous analysis of multiple samples, significantly increasing throughput and reducing cross-contamination by using disposable chips that eliminate the need for cleaning between measurements.
Implementation Method 1
The first thermal substrate provides a substantially uniform temperature across a surface of the thermal substrate. The temperature control module is in thermal communication with the first thermal substrate and controls a temperature of the first thermal substrate.
Implementation Method 2
The temperature control plate has a plurality of layers of thermally conductive material with at least one of the layers having a thermal conductivity that is different from a thermal conductivity of one of the other layers. The layers may be diffusion-bonded to each other.
Data Source
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AI summary
Described is a differential scanning calorimeter (DSC) instrument capable of performing analyses of multiple samples at the same time. Some embodiments of DSC instruments described herein include a thermal substrate that provides a substantially uniform temperature across a surface of the substrate. A plurality of DSC units is in thermal communication with the substrate, for example, by mounting the units directly to the surface of the substrate. Each DSC unit includes a second thermal substrate for further thermal isolation, and a reference platform and sample platform to receive a reference cell and a sample cell, respectively. A thermoelectric device is disposed between each platform and the second thermal substrate. Optionally, the reference and sample cells may be disposable chips that can be discarded after measurement are performed, thereby reducing or eliminating the need to clean instrument components to prevent cross-contamination for subsequent instrument operation.