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Related Concept Videos

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Mnemonic Devices

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Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
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Chunking and Rehearsal in Sensory Memory01:22

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Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
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Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
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Chunking01:12

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Chunking is a powerful cognitive technique that improves short-term memory retention by organizing information into smaller, more manageable units. The brain, limited by working memory capacity, can more easily process and store information when it is divided into "chunks" rather than presented as discrete, unrelated elements. Chunking is especially useful when dealing with large amounts of information, such as numerical sequences, words, or complex ideas.
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Encoding01:19

Encoding

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Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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Programmable and Shape-Memorizing Information Carriers.

Wenbing Li1, Yanju Liu2, Jinsong Leng1

  • 1Centre for Composite Materials and Structures, Harbin Institute of Technology (HIT) , No. 2 YiKuang Street, P.O. Box 3011, Harbin 150080, PR China.

ACS Applied Materials & Interfaces
|December 13, 2017
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Summary
This summary is machine-generated.

This study introduces a novel multicomposite shape memory polymer capable of information delivery. The material can store and transmit data using programmable shape changes triggered by various stimuli.

Keywords:
information deliverymulticompositeprogrammable pattern memoryselective actuations

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Area of Science:

  • Materials Science
  • Polymer Science
  • Nanotechnology

Background:

  • Shape memory polymers (SMPs) offer potential for space structures and actuators but face fabrication and programming challenges.
  • Integrating diverse functional components into a single material is ideal for advanced applications.

Purpose of the Study:

  • To develop a simple method for creating a multicomposite SMP with multiple functional building blocks.
  • To demonstrate the programmable shape recovery and information delivery capabilities of the designed SMP.

Main Methods:

  • Fabrication of a multicomposite SMP incorporating neat epoxy-based shape memory epoxy (SMEP), SMEP-Fe3O4, SMEP-MWCNT, and SMEP-p-aminodiphenylimide.
  • Programming distinct surface patterns using imprint lithography.
  • Reprogramming patterns into temporary flat states triggered by magnetic fields, radiofrequency, UV light, or heating for information encoding.

Main Results:

  • Successfully created a multicomposite SMP with four distinct functional regions.
  • Demonstrated the ability to program and reprogram surface patterns into specific code formats.
  • Showcased stimulus-responsive shape transformations for information transmission.

Conclusions:

  • The developed method enables the creation of functional multicomposite SMPs.
  • This approach offers a practical pathway for information delivery using shape memory polymers.
  • The concept is adaptable to other SMPs, broadening their application scope.